{"product_id":"55103-a","title":"Mastercool 55103-A R744 CO₂ 2-Valve Piston Manifold Body 70mm 1\/4\" SAE","description":"\u003ch1\u003eMastercool 55103-A — R744 CO2 2-Valve Piston Manifold Class 1 - 1\/4\" SAE\u003c\/h1\u003e\u003cp\u003eProfessional 2-valve piston manifold specifically designed for R744 (CO2) transcritical refrigeration systems. Features Class 1 construction with 1\/4\" SAE connections for reliable, leak-free operation in high-pressure CO2 applications. Precision-engineered piston valves provide smooth, accurate control of refrigerant flow in demanding commercial refrigeration service.\u003c\/p\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eR744 CO2 Specific\u003c\/strong\u003e – Designed for transcritical CO2 systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-Valve Piston Design\u003c\/strong\u003e – Smooth, precise refrigerant control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass 1 Construction\u003c\/strong\u003e – Professional-grade durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4\" SAE Connections\u003c\/strong\u003e – Standard HVAC\/R fittings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Pressure Rated\u003c\/strong\u003e – Handles extreme CO2 pressures safely\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Machined\u003c\/strong\u003e – Leak-free valve operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Grade\u003c\/strong\u003e – Built to Mastercool standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eModel: 55103-A\u003c\/li\u003e\n\u003cli\u003eType: 2-valve piston manifold\u003c\/li\u003e\n\u003cli\u003eRefrigerant: R744 (CO2)\u003c\/li\u003e\n\u003cli\u003eValves: 2 piston valves\u003c\/li\u003e\n\u003cli\u003eConstruction: Class 1\u003c\/li\u003e\n\u003cli\u003eConnections: 1\/4\" SAE\u003c\/li\u003e\n\u003cli\u003eApplication: CO2 refrigeration systems\u003c\/li\u003e\n\u003cli\u003eGauge Compatibility: 70mm CO2 gauges\u003c\/li\u003e\n\u003cli\u003eSKU: 55103-A\u003c\/li\u003e\n\u003cli\u003eBarcode: 700376133455\u003c\/li\u003e\n\u003cli\u003eHS Code: 90262080\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePiston Valve Technology:\u003c\/h2\u003e\u003cp\u003ePiston valves provide superior control compared to traditional ball valves, offering smooth, progressive refrigerant flow adjustment. The piston design creates a more precise seal and allows for fine-tuning of refrigerant flow rates – essential for accurate charging and recovery operations in high-pressure CO2 systems.\u003c\/p\u003e\u003ch2\u003eClass 1 Construction:\u003c\/h2\u003e\u003cp\u003eClass 1 construction indicates professional-grade materials and manufacturing standards designed to withstand the extreme pressures and demanding conditions of transcritical CO2 refrigeration. The robust construction ensures long-term reliability in commercial refrigeration service applications.\u003c\/p\u003e\u003ch2\u003eApplications:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCommercial CO2 refrigeration service\u003c\/li\u003e\n\u003cli\u003eTranscritical CO2 system commissioning\u003c\/li\u003e\n\u003cli\u003eCO2 refrigerant charging and recovery\u003c\/li\u003e\n\u003cli\u003eSupermarket refrigeration maintenance\u003c\/li\u003e\n\u003cli\u003eCold storage facility service\u003c\/li\u003e\n\u003cli\u003eNatural refrigerant applications\u003c\/li\u003e\n\u003cli\u003eCO2 cascade system service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatible R744 CO2 Gauges:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mastercool-55102-1400-r744-co2-low-pressure-gauge-70mm-oil-filled\"\u003e55102-1400 — R744 CO2 Low Pressure Gauge 70mm\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mastercool-55102-2400-r744-co2-high-pressure-gauge-70mm-oil-filled\"\u003e55102-2400 — R744 CO2 High Pressure Gauge 70mm\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRelated CO2 Manifolds:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mastercool-55102-a-r744-co2-2-valve-piston-manifold-body-only-1-4-sae\"\u003e55102-A — R744 CO2 2-Valve Piston Manifold Body Only\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mastercool-55661-a-r744-co2-2-v-piston-manifold-cl-1-1-4-3-150\"\u003e55661-A — R744 CO2 2-Valve Piston Manifold 3-150\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Use CO2-Specific Manifolds?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e – Designed for extreme CO2 operating pressures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety\u003c\/strong\u003e – Handles transcritical pressures safely (1,400+ psi)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeak-Free Operation\u003c\/strong\u003e – Precision machining ensures reliable seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Standards\u003c\/strong\u003e – Meets requirements for CO2 service\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston Valve Control\u003c\/strong\u003e – Superior flow control vs. ball valves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability\u003c\/strong\u003e – Built for demanding commercial applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTranscritical CO2 Systems:\u003c\/h2\u003e\u003cp\u003eTranscritical CO2 refrigeration systems operate at significantly higher pressures than traditional refrigerant systems, particularly on the high-pressure side where pressures can exceed 1,400 psi (10 MPa). This requires specialised manifolds with high-pressure ratings, robust construction, and precision valves capable of controlling refrigerant flow under extreme conditions.\u003c\/p\u003e\u003ch2\u003e1\/4\" SAE Connections:\u003c\/h2\u003e\u003cp\u003eStandard 1\/4\" SAE flare connections provide compatibility with industry-standard hoses, gauges, and equipment. The SAE (Society of Automotive Engineers) standard ensures reliable, leak-free connections across different manufacturers' equipment.\u003c\/p\u003e\u003ch2\u003eOperating Instructions:\u003c\/h2\u003e\u003cp\u003eConnect CO2-specific gauges to manifold gauge ports. Attach 1\/4\" SAE hoses to service ports. Connect to CO2 system service valves. Open piston valves slowly and progressively for smooth refrigerant flow control. Monitor pressures carefully – CO2 systems operate at much higher pressures than traditional refrigerants. Close valves fully when service is complete.\u003c\/p\u003e\u003ch2\u003eMaintenance:\u003c\/h2\u003e\u003cp\u003eInspect piston valves regularly for smooth operation. Check all connections for leaks using appropriate leak detection methods. Keep valve stems clean and free from debris. Store in protective case when not in use. Never exceed maximum pressure ratings. Replace valve seals if leaks develop.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eProfessional R744 CO2 2-valve piston manifold\u003c\/strong\u003e with Class 1 construction and 1\/4\" SAE connections. Designed for transcritical CO2 refrigeration service with precision piston valve control.\u003c\/p\u003e","brand":"Mastercool","offers":[{"title":"Default Title","offer_id":57164099715449,"sku":"55103-A","price":247.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/55103-A-web.jpg?v=1777442813","url":"https:\/\/www.airconspares.com\/products\/55103-a","provider":"Airconspares.com","version":"1.0","type":"link"}