{"title":"Nitrogen Equipment","description":"\u003cp\u003eProfessional nitrogen equipment for HVAC and refrigeration pressure testing, nitrogen sweeping, and system commissioning. Includes nitrogen regulators, pressure testing gauge sets, OFN charging hoses, and accessories for AC installation and refrigeration engineers.\u003c\/p\u003e\u003ch2\u003eNitrogen Pressure Testing\u003c\/h2\u003e\u003cp\u003eAll new AC and refrigeration installations must be pressure tested with OFN (oxygen-free nitrogen) before evacuation and charging. Never use compressed air or oxygen — only OFN is safe for refrigeration system pressure testing. Test pressures must meet manufacturer specifications — R32 systems require higher test pressures than R410A.\u003c\/p\u003e\u003ch2\u003eWhat You Need\u003c\/h2\u003e\u003cp\u003eA complete nitrogen pressure testing setup requires a nitrogen regulator rated to the required test pressure, a pressure gauge set, and OFN hoses rated for the working pressure. For VRF and VRV systems, a 24-hour standing test is standard practice — ensure your gauge set has sufficient resolution to detect slow pressure drops.\u003c\/p\u003e\u003ch2\u003eNitrogen Equipment Guides for HVAC Engineers\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/blogs\/hvac-tools-guide\/nitrogen-pressure-testing-hvac-systems\"\u003eNitrogen Pressure Testing for HVAC Systems\u003c\/a\u003e — OFN test pressures, standing test procedure, and leak detection\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/blogs\/hvac-tools-guide\/vrf-vrv-system-commissioning-guide\"\u003eVRF\/VRV System Commissioning Guide\u003c\/a\u003e — pressure testing requirements for multi-indoor unit systems\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/blogs\/hvac-tools-guide\/common-hvac-commissioning-mistakes\"\u003eCommon HVAC Commissioning Mistakes\u003c\/a\u003e — pressure testing errors to avoid\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/blogs\/hvac-tools-guide\/f-gas-compliance-checklist-ac-engineers\"\u003eF-Gas Compliance Checklist for AC Engineers\u003c\/a\u003e — commissioning compliance requirements\u003c\/li\u003e\n\u003c\/ul\u003e","products":[{"product_id":"mastercool-nitrogen-pressure-testing-gauge-set-r410a-uk","title":"Mastercool 53003 — Nitrogen Pressure Regulator UK BS3","description":"\u003ch2\u003eMastercool 53003 Nitrogen Pressure Regulator — UK BS3 Cylinder Fitting\u003c\/h2\u003e\u003cp\u003eNitrogen pressure regulator with UK BS3 cylinder connection for pressure testing AC and refrigeration pipework. Dual gauge shows cylinder pressure and delivery pressure. Adjustable output pressure for setting to required test pressure. Essential for F-Gas compliant AC commissioning and leak testing.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUK BS3 fitting — connects directly to UK nitrogen cylinders\u003c\/li\u003e\n\u003cli\u003eDual gauge — cylinder \u0026amp; delivery pressure\u003c\/li\u003e\n\u003cli\u003eAdjustable output pressure\u003c\/li\u003e\n\u003cli\u003eEssential for F-Gas compliant commissioning \u0026amp; leak testing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso Consider\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mastercool-nitrogen-pressure-testing-gauge-set-r410a\"\u003eMastercool 53002 Nitrogen Pressure Testing Gauge Set\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/nitrogen-equipment\"\u003eBrowse all Nitrogen Equipment\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mastercool","offers":[{"title":"Default Title","offer_id":57029572788601,"sku":"53003","price":131.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/Mastercool-Nitrogen-Pressure-Testing-Gauge-Set-R410a-UK-Ryan-Air-Conditioning-Spares-68945194582391.jpg?v=1775889336"},{"product_id":"javac-rs-750-nitrogen-pressure-regulator-50-bar","title":"Javac Edge RS-750 Nitrogen Pressure Regulator – 50 Bar | 1\/4\" SAE | BS EN 378 | HVAC Leak Testing","description":"\u003ch2\u003eJavac Edge RS-750 Nitrogen Pressure Regulator – 50 Bar\u003c\/h2\u003e\n\u003cp\u003eThe Javac Edge RS-750 is a professional nitrogen pressure regulator for F-Gas compliant pressure testing on HVAC and refrigeration systems. With a 300 bar maximum inlet pressure and 0–50 bar (0–750 psi) adjustable outlet, it covers all standard HVAC pressure testing requirements. The 1\/4\" SAE flare outlet connection allows rapid connection to industry standard hoses, and the large pressure adjustment knob makes precise pressure setting straightforward on site. Compliant with BS EN 378 — suitable for R410A and all standard refrigerants including A2L systems.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e0–50 bar (0–750 psi) adjustable outlet pressure\u003c\/li\u003e\n\u003cli\u003e300 bar maximum inlet pressure\u003c\/li\u003e\n\u003cli\u003e1\/4\" SAE flare outlet — fits standard HVAC hose sets\u003c\/li\u003e\n\u003cli\u003eCGA580 inlet connection — compatible with standard nitrogen cylinders\u003c\/li\u003e\n\u003cli\u003eDual gauge display — high pressure inlet and regulated output\u003c\/li\u003e\n\u003cli\u003eBS EN 378 compliant — meets UK F-Gas and refrigeration safety standards\u003c\/li\u003e\n\u003cli\u003eSuitable for R32, R410A, R22 and all A2L refrigerant systems\u003c\/li\u003e\n\u003cli\u003eMade in Australia — Javac Edge professional trade quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Nitrogen Pressure Test?\u003c\/h3\u003e\n\u003cp\u003eNitrogen pressure testing is a mandatory step in F-Gas compliant HVAC commissioning. It verifies system integrity before refrigerant is introduced, identifying leaks at joints, fittings and welds. The RS-750 delivers precise, repeatable pressure control to meet BS EN 378 requirements on every job.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRS-750\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJavac Edge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutlet Pressure Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–50 bar (0–750 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Inlet Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCGA580\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4\" SAE flare\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBS EN 378\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.2kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAustralia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eWant a Complete Nitrogen Testing Kit?\u003c\/h3\u003e\n\u003cp\u003eIf you need a ready-to-use nitrogen pressure testing setup, the \u003ca href=\"\/products\/javac-edge-rs-750-rig-nitrogen-pressure-testing-rig-50-bar-isolation-valve-dual-gauges-bs-en-378\"\u003eJavac Edge RS-750-RIG Nitrogen Pressure Testing Rig\u003c\/a\u003e includes the RS-750 regulator, isolation valve, dual gauges and all connections in a single kit — ideal for engineers who want a complete, compliant solution out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eComplete Your Nitrogen Testing Setup\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/javac-edge-rs-750-rig-nitrogen-pressure-testing-rig-50-bar-isolation-valve-dual-gauges-bs-en-378\"\u003eJavac Edge RS-750-RIG Nitrogen Testing Rig\u003c\/a\u003e — complete kit with isolation valve and dual gauges\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/nitrogen-equipment\"\u003eNitrogen Equipment\u003c\/a\u003e — regulators, hoses and fittings for nitrogen pressure testing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/hvac-tools\"\u003eHVAC Tools \u0026amp; Equipment\u003c\/a\u003e — vacuum pumps, manifold gauges and commissioning tools\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/blogs\/hvac-tools-guide\/nitrogen-pressure-testing-hvac-systems\"\u003eNitrogen Pressure Testing Guide\u003c\/a\u003e — step-by-step BS EN 378 compliant procedure\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Javac Edge","offers":[{"title":"Default Title","offer_id":57029870715257,"sku":"RS-750","price":178.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/PULSE_PICTURES_-_2026-03-20T150346.660.png?v=1781845650"},{"product_id":"mastercool-53030-nitrogen-pressure-regulator-kit-for-hvac-leak-testing","title":"Mastercool 53030 Nitrogen Pressure Regulator Kit for HVAC Leak Testing","description":"\u003cp\u003eDetect leaks in HVAC\/R and automotive A\/C systems with the Mastercool 53030 Nitrogen Pressure Testing Regulator Kit. This professional-grade, single-stage regulator features a BS3 (UK) cylinder connection, 1\/4\" SAE flare outlet with control valve, and a T-handle for precise pressure adjustments. Equipped with 68mm gauges (4500 psi high, 1000 psi low), it includes a 38\" yellow charging hose, leak testing adapter, R410a\/R32 straight adapter, and a durable blow-moulded case. Perfect for UK technicians. Available now at Airconspares.com!\u003c\/p\u003e","brand":"Mastercool","offers":[{"title":"Default Title","offer_id":57030058803577,"sku":"53030","price":233.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/Mastercool-53030-Nitrogen-Pressure-Regulator-Kit-for-HVAC-Leak-Testing-Ryan-Air-Conditioning-Spares-68967779828087.jpg?v=1775894793"},{"product_id":"mastercool-5300-fa-1-4-flare-adapter-nitrogen-regulator-part-5","title":"Mastercool 5300-FA 1\/4\" Flare Adapter for Nitrogen Regulator","description":"\u003ch1\u003eMastercool 5300-FA — 1\/4\" Flare Adapter for Nitrogen Pressure Regulators\u003c\/h1\u003e\u003cp\u003eGenuine replacement 1\/4\" flare adapter (Part #5) for Mastercool nitrogen pressure regulators models 53001, 53002, 53003, 53004, 53005, and 53006. Precision-engineered adapter ensures secure, leak-free connections to 1\/4\" flare fittings during nitrogen leak testing and system pressurisation.\u003c\/p\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Mastercool Part\u003c\/strong\u003e – OEM quality replacement component\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart #5 in Assembly\u003c\/strong\u003e – 1\/4\" flare adapter from official parts breakdown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Fit\u003c\/strong\u003e – Compatible with all 53001-53006 nitrogen regulators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4\" Flare Connection\u003c\/strong\u003e – Standard HVAC\/R fitting size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeak-Free Design\u003c\/strong\u003e – Ensures reliable nitrogen connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction\u003c\/strong\u003e – Built to Mastercool professional standards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Replacement\u003c\/strong\u003e – Exact fit for original component\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eModel: 5300-FA\u003c\/li\u003e\n\u003cli\u003eType: Flare adapter\u003c\/li\u003e\n\u003cli\u003eSize: 1\/4\" flare\u003c\/li\u003e\n\u003cli\u003ePart Number: #5 (from repairable parts breakdown)\u003c\/li\u003e\n\u003cli\u003eCompatible Models: 53001, 53002, 53003, 53004, 53005, 53006\u003c\/li\u003e\n\u003cli\u003eApplication: Nitrogen pressure regulators\u003c\/li\u003e\n\u003cli\u003eMaterial: Brass construction\u003c\/li\u003e\n\u003cli\u003eSKU: 5300-FA\u003c\/li\u003e\n\u003cli\u003eHS Code: 74122000\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eComplete Nitrogen Regulator Replacement Parts:\u003c\/h2\u003e\u003ch3\u003eAll Repairable Components Available\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart #1: \u003ca href=\"\/products\/mastercool-5300-van-valve-assembly-nut-nitrogen-regulator-part-1\"\u003e5300-VAN — Valve Assembly Nut\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #2: \u003ca href=\"\/products\/5300-vak\"\u003e5300-VAK — Valve Assemble Knob\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #3: \u003ca href=\"\/products\/mastercool-5300-kc-knob-cap-nitrogen-regulator-part-3\"\u003e5300-KC — Knob Cap\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #4: \u003ca href=\"\/products\/mastercool-5300-va-valve-assembly-nitrogen-regulator-part-4\"\u003e5300-VA — Valve Assembly\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #5: \u003ca href=\"\/products\/mastercool-5300-fa-1-4-flare-adapter-nitrogen-regulator-part-5\"\u003e5300-FA — 1\/4\" Flare Adapter\u003c\/a\u003e (this part)\u003c\/li\u003e\n\u003cli\u003ePart #6: \u003ca href=\"\/products\/mastercool-5300-tb-t-bar-nitrogen-regulator-part-6\"\u003e5300-TB — T\" Bar\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #7: \u003ca href=\"\/products\/mastercool-5300-rps-regulator-pressure-screw-nitrogen-part-7\"\u003e5300-RPS — Regulator Pressure Screw\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatible Nitrogen Regulators:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e53001 (pictured) — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53002 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53003 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53004 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53005 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53006 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNitrogen regulator maintenance and repair\u003c\/li\u003e\n\u003cli\u003eFlare adapter replacement\u003c\/li\u003e\n\u003cli\u003eConnection to 1\/4\" flare hoses and fittings\u003c\/li\u003e\n\u003cli\u003eLeak testing equipment maintenance\u003c\/li\u003e\n\u003cli\u003eSystem pressurisation equipment repair\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Replace Your Flare Adapter?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorn Threads\u003c\/strong\u003e – Difficulty achieving leak-free connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamaged Flare Seat\u003c\/strong\u003e – Compromised sealing surface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen Leaks\u003c\/strong\u003e – Escaping nitrogen at connection point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Threading\u003c\/strong\u003e – Damaged threads from improper installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreventive Maintenance\u003c\/strong\u003e – Replace before failure occurs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e1\/4\" Flare Connection:\u003c\/h2\u003e\u003cp\u003eThe 1\/4\" flare is the standard connection size for HVAC\/R nitrogen leak testing and pressurisation. This adapter provides a secure, leak-free connection between the nitrogen regulator and standard 1\/4\" flare hoses used in refrigeration service work.\u003c\/p\u003e\u003ch2\u003eInstallation:\u003c\/h2\u003e\u003cp\u003eEnsure threads are clean and free from debris. Thread the flare adapter carefully to avoid cross-threading. Tighten to manufacturer's specifications. The flare seat must be clean and undamaged for proper sealing. Refer to the nitrogen regulator repairable parts breakdown diagram for proper assembly.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eGenuine Mastercool replacement part\u003c\/strong\u003e for maintaining nitrogen pressure regulator performance and reliability. Part #5 from official repairable parts breakdown for models 53001-53006.\u003c\/p\u003e","brand":"Mastercool","offers":[{"title":"Default Title","offer_id":57165694894457,"sku":"5300-FA","price":15.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/53001PartsImage_4af55dc1-5ede-49d4-a5df-d64f79c0e59a.png?v=1777449983"},{"product_id":"mastercool-5300-rps-regulator-pressure-screw-nitrogen-part-7","title":"Mastercool 5300-RPS Regulator Pressure Screw Nitrogen Part #7","description":"\u003ch1\u003eMastercool 5300-RPS — Regulator Pressure Screw for Nitrogen Regulators\u003c\/h1\u003e\u003cp\u003eGenuine replacement regulator pressure screw (Part #7) for Mastercool nitrogen pressure regulators models 53001, 53002, 53003, 53004, 53005, and 53006. Precision-engineered pressure adjustment screw ensures accurate nitrogen pressure control during leak testing and system pressurisation.\u003c\/p\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Mastercool Part\u003c\/strong\u003e – OEM quality replacement component\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart #7 in Assembly\u003c\/strong\u003e – Regulator pressure screw from official parts breakdown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Fit\u003c\/strong\u003e – Compatible with all 53001-53006 nitrogen regulators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Control\u003c\/strong\u003e – Ensures accurate pressure adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction\u003c\/strong\u003e – Built to Mastercool professional standards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Replacement\u003c\/strong\u003e – Exact fit for original component\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eModel: 5300-RPS\u003c\/li\u003e\n\u003cli\u003eType: Regulator pressure screw\u003c\/li\u003e\n\u003cli\u003ePart Number: #7 (from repairable parts breakdown)\u003c\/li\u003e\n\u003cli\u003eCompatible Models: 53001, 53002, 53003, 53004, 53005, 53006\u003c\/li\u003e\n\u003cli\u003eApplication: Nitrogen pressure regulators\u003c\/li\u003e\n\u003cli\u003eMaterial: Metal construction\u003c\/li\u003e\n\u003cli\u003eSKU: 5300-RPS\u003c\/li\u003e\n\u003cli\u003eHS Code: 84818099\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eComplete Nitrogen Regulator Replacement Parts:\u003c\/h2\u003e\u003ch3\u003eAll Repairable Components Available\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart #1: \u003ca href=\"\/products\/mastercool-5300-van-valve-assembly-nut-nitrogen-regulator-part-1\"\u003e5300-VAN — Valve Assembly Nut\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #2: \u003ca href=\"\/products\/5300-vak\"\u003e5300-VAK — Valve Assemble Knob\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #3: \u003ca href=\"\/products\/mastercool-5300-kc-knob-cap-nitrogen-regulator-part-3\"\u003e5300-KC — Knob Cap\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #4: \u003ca href=\"\/products\/mastercool-5300-va-valve-assembly-nitrogen-regulator-part-4\"\u003e5300-VA — Valve Assembly\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #5: \u003ca href=\"\/products\/mastercool-5300-fa-1-4-flare-adapter-nitrogen-regulator-part-5\"\u003e5300-FA — 1\/4\" Flare Adapter\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #6: \u003ca href=\"\/products\/mastercool-5300-tb-t-bar-nitrogen-regulator-part-6\"\u003e5300-TB — T\" Bar\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart #7: \u003ca href=\"\/products\/mastercool-5300-rps-regulator-pressure-screw-nitrogen-part-7\"\u003e5300-RPS — Regulator Pressure Screw\u003c\/a\u003e (this part)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatible Nitrogen Regulators:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e53001 (pictured) — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53002 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53003 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53004 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53005 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003cli\u003e53006 — Nitrogen Pressure Regulator\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNitrogen regulator maintenance and repair\u003c\/li\u003e\n\u003cli\u003ePressure adjustment mechanism replacement\u003c\/li\u003e\n\u003cli\u003eReplacement of worn or damaged pressure screws\u003c\/li\u003e\n\u003cli\u003eLeak testing equipment maintenance\u003c\/li\u003e\n\u003cli\u003eSystem pressurisation equipment repair\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Replace Your Pressure Screw?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorn Threads\u003c\/strong\u003e – Difficulty achieving smooth pressure adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamaged Screw\u003c\/strong\u003e – Bent or stripped threads affecting control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Control Issues\u003c\/strong\u003e – Inability to maintain consistent pressure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreventive Maintenance\u003c\/strong\u003e – Replace before failure occurs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Standards\u003c\/strong\u003e – Maintain equipment reliability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePressure Screw Function:\u003c\/h2\u003e\u003cp\u003eThe regulator pressure screw is the core adjustment mechanism that controls nitrogen output pressure. Turning the screw adjusts the internal spring tension, which in turn regulates the nitrogen pressure delivered to the system. Precise pressure control is essential for accurate leak testing and safe system pressurisation.\u003c\/p\u003e\u003ch2\u003eInstallation:\u003c\/h2\u003e\u003cp\u003eThe pressure screw threads into the regulator body and connects to the internal pressure control mechanism. Ensure threads are clean and undamaged. Thread carefully to avoid cross-threading. Refer to the nitrogen regulator repairable parts breakdown diagram for proper assembly sequence and adjustment procedures.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eGenuine Mastercool replacement part\u003c\/strong\u003e for maintaining nitrogen pressure regulator performance and reliability. Part #7 from official repairable parts breakdown for models 53001-53006.\u003c\/p\u003e","brand":"Mastercool","offers":[{"title":"Default Title","offer_id":57165698728313,"sku":"5300-RPS","price":14.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/53001PartsImage_e8a8e880-91e0-4990-b437-b7384bd8bd2f.png?v=1777450003"},{"product_id":"javac-rs-750-rig-nitrogen-pressure-testing-rig","title":"Javac Edge RS-750-RIG Nitrogen Pressure Testing Rig – 50 Bar | Isolation Valve | Dual Gauges | BS EN 378","description":"\u003ch2\u003eJavac Edge RS-750-RIG Nitrogen Pressure Testing Rig – 50 Bar\u003c\/h2\u003e\u003cp\u003eThe Javac Edge RS-750-RIG is a complete, self-contained professional nitrogen pressure testing rig for F-Gas compliant pressure testing on HVAC and refrigeration systems. Everything needed for a compliant nitrogen pressure test in a single robust unit — isolation valve, dual gauges, braided hose, and safety relief valve included. Compliant with BS EN 378, designed for refrigeration systems using R410A and all standard refrigerants including A2L systems.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComplete testing rig — isolation valve, dual gauges and braided hose in one unit; no additional equipment required\u003c\/li\u003e\n\u003cli\u003e300 bar maximum inlet pressure — compatible with all standard nitrogen cylinders\u003c\/li\u003e\n\u003cli\u003e0–50 bar (0–750 psi) outlet pressure range — covers all HVAC pressure testing requirements\u003c\/li\u003e\n\u003cli\u003e1\/4\" SAE flare outlet connection — rapid connection to industry standard hoses\u003c\/li\u003e\n\u003cli\u003eSafety relief valve — prevents regulator over-pressurisation\u003c\/li\u003e\n\u003cli\u003eBS EN 378 compliant — designed for refrigeration systems using R410A\u003c\/li\u003e\n\u003cli\u003eRobust construction — suited to the rigours of daily trade use\u003c\/li\u003e\n\u003cli\u003e12-month Javac Edge warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Nitrogen Pressure Test?\u003c\/h3\u003e\u003cp\u003eF-Gas regulations require pressure testing with dry nitrogen before refrigerant charge on all new installations and after major repairs. The RS-750-RIG provides a complete, self-contained solution — no additional gauges or fittings required. Identifies leaks before refrigerant is introduced, saving time and preventing costly refrigerant loss.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eRS-750-RIG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eJavac Edge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum inlet pressure\u003c\/td\u003e\n\u003ctd\u003e300 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet pressure range\u003c\/td\u003e\n\u003ctd\u003e0–50 bar (0–750 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet connection\u003c\/td\u003e\n\u003ctd\u003e1\/4\" SAE flare\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eIsolation valve, dual gauges, braided hose, safety relief valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard compliance\u003c\/td\u003e\n\u003ctd\u003eBS EN 378\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible refrigerants\u003c\/td\u003e\n\u003ctd\u003eR410A, R32, R1234yf and all A2L systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e5060144943644\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e84811099\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eFrequently Bought With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/javac-rs-750-nitrogen-pressure-regulator-50-bar\"\u003eRS-750 — Javac Edge Nitrogen Pressure Regulator\u003c\/a\u003e — regulator only option\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/javac-nitrogen-testing-brazing-kit-pressure-testing-rig-purge-tool\"\u003eJavac Nitrogen Testing \u0026amp; Brazing Kit\u003c\/a\u003e — rig and purge tool bundle\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/javac-jav-1444-nitrogen-purge-braze-tool-for-hvac-brazing\"\u003eJAV-1444 Nitrogen Purge \u0026amp; Braze Tool\u003c\/a\u003e — for nitrogen purging during brazing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBrowse our full range of \u003ca href=\"\/collections\/nitrogen-testing\"\u003eNitrogen Testing Equipment\u003c\/a\u003e.\u003c\/p\u003e","brand":"Javac Edge","offers":[{"title":"Default Title","offer_id":63736728584569,"sku":"RS-750-RIG","price":554.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/RS-750-RIG-IMG-5.png?v=1781105283"},{"product_id":"javac-jav-1444-nitrogen-purge-tool","title":"Javac JAV-1444 Nitrogen Purge \u0026 Braze Tool for HVAC Brazing","description":"\u003ch2\u003eJavac JAV-1444 Nitrogen Purge \u0026amp; Braze Tool for HVAC Brazing\u003c\/h2\u003e\u003cp\u003eWhen carrying out repairs on refrigeration or air conditioning pipework, it is essential to purge the inside of the tubing with nitrogen to prevent oxidation around the joint area — both before and throughout the brazing process. The Javac JAV-1444 simplifies this procedure with dual-mode operation: initiate the PURGE function at a pre-set regulated flow rate, then switch to BRAZE mode with a simple turn of the control knob to deliver a steady 3 L\/min — sufficient to protect the joint from oxidation while minimising nitrogen consumption.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Mode Operation (Purge \u0026amp; Braze)\u003c\/strong\u003e — single tool covers both stages of the nitrogen brazing process\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Set Purge Flow Rate\u003c\/strong\u003e — regulated flow eliminates guesswork; consistent results every time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3 L\/min Braze Mode Flow\u003c\/strong\u003e — ideal flow rate to protect joints from oxidation without wasting nitrogen\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects to Standard Nitrogen Regulator\u003c\/strong\u003e — no additional adapters required for most setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4\" SAE Flare Outlet\u003c\/strong\u003e — fully compatible with standard HVAC service hoses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium Body, Brass Internals\u003c\/strong\u003e — lightweight and durable; brass inlet, outlet and internals for long-term wear resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevents Air Ingress\u003c\/strong\u003e — maintains inert atmosphere inside pipework throughout the repair\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e JAV-1444\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 5060926535715\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTariff Code:\u003c\/strong\u003e 84818069\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Service:\u003c\/strong\u003e Nitrogen (N2)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Working Pressure:\u003c\/strong\u003e 350 kPa (50 psi) — do not exceed MWP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Flow Rate:\u003c\/strong\u003e 3 L\/min (braze mode)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection:\u003c\/strong\u003e 1\/4\" SAE flare\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -20°C to +50°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Aluminium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet, Outlet \u0026amp; Internals:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.11 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W×L×D):\u003c\/strong\u003e 38×80×30 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eInsert the purge device into the pipe and rotate to create a secure seal\u003c\/li\u003e\n\u003cli\u003eSet control knob to \u003cstrong\u003eOFF\u003c\/strong\u003e and carefully open the nitrogen cylinder valve\u003c\/li\u003e\n\u003cli\u003eTurn to \u003cstrong\u003ePURGE\u003c\/strong\u003e — allow system to purge for several minutes to remove all air\u003c\/li\u003e\n\u003cli\u003eTurn to \u003cstrong\u003eBRAZE\u003c\/strong\u003e — nitrogen flows at 3 L\/min to protect the joint during brazing\u003c\/li\u003e\n\u003cli\u003eOnce complete, remove device, close cylinder valve and release remaining gas\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eRelated Nitrogen Equipment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/javac-rs-750-nitrogen-pressure-regulator-50-bar\"\u003e\u003cstrong\u003eRS-750\u003c\/strong\u003e — Javac Nitrogen Pressure Regulator 50 Bar\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/javac-rs-750-rig-nitrogen-pressure-testing-rig\"\u003e\u003cstrong\u003eRS-750-RIG\u003c\/strong\u003e — Complete Nitrogen Pressure Testing Rig\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Javac","offers":[{"title":"Default Title","offer_id":63737799377273,"sku":"JAV-1444","price":52.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/JAV-1444-IMG-3_1.png?v=1781120164"},{"product_id":"javac-nitrogen-testing-brazing-kit","title":"Javac Nitrogen Testing \u0026 Brazing Kit | Pressure Testing Rig \u0026 Purge Tool","description":"\u003ch2\u003eJavac Nitrogen Testing \u0026amp; Brazing Kit\u003c\/h2\u003e\u003cp\u003eA complete nitrogen workflow kit for HVAC engineers — covering both pressure testing before refrigerant charge and nitrogen purging during brazing. The RS-750-RIG provides a self-contained pressure testing rig rated to 300 bar inlet and 0–50 bar outlet, while the JAV-1444 purge and braze tool ensures clean, oxidation-free joints every time. Both items are UK stocked by Javac for fast replenishment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSave £28 vs buying components separately.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× RS-750-RIG\u003c\/strong\u003e — Javac Edge complete nitrogen pressure testing rig with isolation valve, dual gauges, safety relief valve, braided hose and 1\/4\" SAE flare outlet. BS EN 378 compliant. Suitable for R410A, R32, R1234yf and all A2L systems. 0–50 bar (0–750 psi) outlet pressure range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× JAV-1444\u003c\/strong\u003e — Javac Edge nitrogen purge \u0026amp; braze tool with dual-mode operation (PURGE and BRAZE), pre-set purge flow rate, 3 L\/min braze mode flow, 1\/4\" SAE flare outlet and aluminium body with brass internals.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy This Kit?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Nitrogen Workflow\u003c\/strong\u003e — covers pressure testing and brazing purge in a single purchase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eF-Gas Compliant\u003c\/strong\u003e — nitrogen pressure testing before refrigerant charge is a legal requirement under F-Gas regulations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxidation-Free Joints\u003c\/strong\u003e — JAV-1444 purge tool prevents copper oxidation during brazing for cleaner, more reliable connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBS EN 378 Rated\u003c\/strong\u003e — RS-750-RIG designed and rated for modern high-pressure refrigerant systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUK Stocked by Javac\u003c\/strong\u003e — fast replenishment on both components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eKey Spec\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRS-750-RIG\u003c\/td\u003e\n\u003ctd\u003e300 bar inlet, 0–50 bar outlet, 1\/4\" SAE, BS EN 378\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJAV-1444\u003c\/td\u003e\n\u003ctd\u003eDual-mode purge\/braze, 3 L\/min braze flow, 1\/4\" SAE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eComponent Links\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/javac-rs-750-rig-nitrogen-pressure-testing-rig-with-isolation-valve-dual-gauges\"\u003eRS-750-RIG — Javac Edge Nitrogen Pressure Testing Rig\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/javac-jav-1444-nitrogen-purge-braze-tool-for-hvac-brazing\"\u003eJAV-1444 — Javac Edge Nitrogen Purge \u0026amp; Braze Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/javac-edge-flexi-torch-jav-1004-flexible-brazing-torch-mapp-propane\"\u003eJAV-1004 — Javac Edge Flexi Torch\u003c\/a\u003e — pairs well with the JAV-1444 for brazing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Javac Edge","offers":[{"title":"Default Title","offer_id":63744385548665,"sku":null,"price":579.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/RS-750-RIG-IMG-5.png?v=1781105283"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/collections\/Mastercool-53030-Nitrogen-Pressure-Regulator-Kit-for-HVAC-Leak-Testing-Ryan-Air-Conditioning-Spares-68967779828087.jpg?v=1779958373","url":"https:\/\/www.airconspares.com\/collections\/nitrogen-equipment.oembed","provider":"Airconspares.com","version":"1.0","type":"link"}