{"product_id":"spirotech-spirocross-ax100j-1in-hydraulic-separator-heat-pump","title":"Spirotech SpiroCross AX100J 1in Hydraulic Separator Heat Pump","description":"\u003c!-- SEO Product Name: Spirotech SpiroCross AX100J 1in Hydraulic Separator Heat Pump --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; font-family:Arial,Helvetica,sans-serif; color:#222; line-height:1.65;\"\u003e\n\n\u003cdiv style=\"background:#008377;color:#fff;border-radius:6px;padding:10px 18px;margin-bottom:18px;font-weight:700;font-size:0.95em;letter-spacing:.04em;\"\u003e\nHEAT PUMP \u0026amp; MULTI-CIRCUIT SYSTEM COMPONENT — HYDRAULIC SEPARATOR WITH AIR \u0026amp; DIRT SEPARATION\n\u003c\/div\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSpirotech SpiroCross AX100J\u003c\/strong\u003e is a \u003cstrong\u003eRp 1\" brass low-loss header\n(hydraulic separator)\u003c\/strong\u003e that combines \u003cstrong\u003ethree essential functions in a single compact unit\u003c\/strong\u003e:\n\u003cstrong\u003ehydraulic balancing\u003c\/strong\u003e between a primary heat source circuit and a secondary distribution circuit,\n\u003cstrong\u003econtinuous microbubble air deaeration\u003c\/strong\u003e, and \u003cstrong\u003eneodymium magnetic dirt separation\u003c\/strong\u003e.\nDeveloped using \u003cstrong\u003eComputational Fluid Dynamics (CFD) modelling\u003c\/strong\u003e and validated on a\n\u003cstrong\u003eTÜV-certified test rig\u003c\/strong\u003e, it is specifically engineered for \u003cstrong\u003eheat pump installations,\nunderfloor heating systems, and any multi-circuit HVAC arrangement\u003c\/strong\u003e where hydraulic independence\nbetween the primary pump and secondary distribution pumps is essential for stable, efficient operation.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:0;background:#008377CF;color:#fff;border-radius:6px;padding:12px 16px;margin:22px 0;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;text-align:center;padding:6px 4px;\"\u003e\n\u003cdiv style=\"font-size:1.25em;font-weight:700;\"\u003e3-in-1\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.78em;opacity:.85;\"\u003eHydraulic + Air + Dirt\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;text-align:center;padding:6px 4px;\"\u003e\n\u003cdiv style=\"font-size:1.25em;font-weight:700;\"\u003e10 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.78em;opacity:.85;\"\u003eMax pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;text-align:center;padding:6px 4px;\"\u003e\n\u003cdiv style=\"font-size:1.25em;font-weight:700;\"\u003e110 °C\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.78em;opacity:.85;\"\u003eMax temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;text-align:center;padding:6px 4px;\"\u003e\n\u003cdiv style=\"font-size:1.25em;font-weight:700;\"\u003e2.0 m³\/h\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.78em;opacity:.85;\"\u003eMax flow rate\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;text-align:center;padding:6px 4px;\"\u003e\n\u003cdiv style=\"font-size:1.25em;font-weight:700;\"\u003eRp 1\"\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.78em;opacity:.85;\"\u003eBSP connection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;text-align:center;padding:6px 4px;\"\u003e\n\u003cdiv style=\"font-size:1.25em;font-weight:700;\"\u003e20 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.78em;opacity:.85;\"\u003eSpiroLIFE warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f4;padding:12px 16px;margin:14px 0;border-radius:0 4px 4px 0;\"\u003e\n\u003cstrong style=\"color:#c0392b;\"\u003eINSTALLATION — ORIENTATION AND PIPEWORK\u003c\/strong\u003e\u003cbr\u003eThe AX100J must be \u003cstrong\u003emounted in horizontal pipework with the integral air vent on top\u003c\/strong\u003e. The unit has no directional arrow — either connection may be used as inlet or outlet, and flow may be directed to either side. To ensure the best air separation efficiency, connect the \u003cstrong\u003ehigher-temperature circuit to the upper connections\u003c\/strong\u003e. Allow at least \u003cstrong\u003e100mm straight pipe before and after\u003c\/strong\u003e the unit. The piping normally supports the unit weight (6.5 kg dry).\u003c\/div\u003e\n\n\u003cdiv style=\"border-left:4px solid #d35400;background:#fffbf0;padding:12px 16px;margin:14px 0;border-radius:0 4px 4px 0;\"\u003e\n\u003cstrong style=\"color:#d35400;\"\u003ePRIMARY \/ SECONDARY CIRCUIT REQUIREMENT\u003c\/strong\u003e\u003cbr\u003eThe SpiroCross AX100J is designed for systems with a \u003cstrong\u003eseparate primary circuit (heat source) and secondary circuit (distribution)\u003c\/strong\u003e, each with its own circulating pump. If your system has only a single circuit with one pump, a standard SpiroTrap MB3 and SpiroVent RV2 combination is the appropriate specification. The AX100J is not a single-circuit filter.\u003c\/div\u003e\n\n\u003cdiv style=\"border-left:4px solid #008377;background:#f0faf9;padding:12px 16px;margin:14px 0;border-radius:0 4px 4px 0;\"\u003e\n\u003cstrong style=\"color:#008377;\"\u003eTHREE FUNCTIONS IN ONE — COST AND SPACE SAVING\u003c\/strong\u003e\u003cbr\u003eBy replacing a separate low-loss header, dirt separator, and air deaerator with a single unit, the AX100J reduces the number of \u003cstrong\u003esystem connections from eight to four\u003c\/strong\u003e, saving installation time, reducing potential leak points, and significantly reducing plantroom footprint. The SpiroTube technology ensures \u003cstrong\u003eminimal fluid mixing\u003c\/strong\u003e between the primary and secondary loops — maintaining the temperature differential that heat pump COP depends upon.\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:14px;margin:20px 0;\"\u003e\n\u003cdiv style=\"flex:1;min-width:220px;background:#f8f8f8;border-radius:6px;padding:16px 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:1em;border-bottom:2px solid #008377;padding-bottom:4px;\"\u003eHydraulic Balancing — SpiroTube Technology\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;\"\u003eThe internal SpiroTube element creates a \u003cstrong\u003elow-velocity central zone\u003c\/strong\u003e that prevents direct short-circuiting between primary and secondary flows. This compensates for flow differences between the primary heat pump pump and multiple secondary zone pumps, ensuring \u003cstrong\u003eeach secondary zone receives stable, correctly tempered water\u003c\/strong\u003e regardless of how many zones are active simultaneously — essential for heat pump COP stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:220px;background:#f8f8f8;border-radius:6px;padding:16px 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:1em;border-bottom:2px solid #008377;padding-bottom:4px;\"\u003eNeodymium Magnetic Dirt Separation\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;\"\u003eA \u003cstrong\u003epowerful neodymium magnet\u003c\/strong\u003e captures magnetite and magnetic debris in a large collection chamber that can be drained \u003cstrong\u003ewhile the system remains fully operational\u003c\/strong\u003e. The large chamber capacity means infrequent draining is needed. Collected dirt is discharged quickly under system pressure — no system shutdown, no tools required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:220px;background:#f8f8f8;border-radius:6px;padding:16px 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:1em;border-bottom:2px solid #008377;padding-bottom:4px;\"\u003eFactory-Fitted Integral Air Vent\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;\"\u003eThe \u003cstrong\u003efactory-installed automatic air vent\u003c\/strong\u003e continuously removes circulating air and microbubbles without manual intervention. Unlike add-on vents, this is positioned at the natural high point of the SpiroTube's collection zone — the most effective location for bubble coalescence and release in a low-loss header format.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:220px;background:#f8f8f8;border-radius:6px;padding:16px 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:1em;border-bottom:2px solid #008377;padding-bottom:4px;\"\u003eCFD-Developed \u0026amp; TÜV-Validated\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;\"\u003eSpirotech used \u003cstrong\u003eComputational Fluid Dynamics\u003c\/strong\u003e to optimise internal flow geometry and validated the design on a \u003cstrong\u003eTÜV-certified test and measurement rig\u003c\/strong\u003e as well as real-world installations. The AX-J series is not an adapted off-the-shelf product — it is a purpose-engineered heat pump and multi-circuit component.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-top:28px;\"\u003eTechnical Specification — SpiroCross AX100J (Rp 1\")\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;margin:22px 0;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-family:inherit;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"background:#008377CF;color:#fff;padding:8px 12px;text-align:left;font-size:0.9em;\"\u003eConnection \u0026amp; Hydraulics\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eArticle Number\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eAX100J\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eSpiroCross AX-J Hydraulic Separator — Rp 1\" threaded fitting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eConnection\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eRp 1\" BSP internal thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eMax Flow Rate\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e2.0 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eMax Flow Velocity\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e1.0 m\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"background:#008377CF;color:#fff;padding:8px 12px;text-align:left;font-size:0.9em;\"\u003eOperating Limits\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eMax Operating Pressure\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e10 bar (bar-g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eMax Temperature\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e110 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eMedium\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eWater \/ glycol (max 50% v\/v)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eDesign Standard\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eEN 13445\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eCE Marking\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e2014\/68\/EU (Pressure Equipment Directive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"background:#008377CF;color:#fff;padding:8px 12px;text-align:left;font-size:0.9em;\"\u003eConstruction Materials\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eBody\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eConnections\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eFittings\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eDeaeration Cap\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eValve Sealing\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eViton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eFloat\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eDrain Valve\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eSpirotube Tube\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eS235 JRG2 (structural steel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eSpirotube Wire\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eCopper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eSpirotube Solder\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eTin (SnCu3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eMagnet\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eNeodymium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"background:#008377CF;color:#fff;padding:8px 12px;text-align:left;font-size:0.9em;\"\u003ePhysical Dimensions\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eTotal Height (H)\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e462 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eLower Height (h)\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e135 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eConnection Height (h1)\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e144 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eUpper Height (h2)\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e183 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eLength (L)\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e236 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eBody Diameter (D)\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e84 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eWidth (b)\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e53 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eMin clearance above (x)\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e\u0026gt;100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eMin clearance below (y)\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e\u0026gt;50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eAir Vent Port (e)\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eG 3\/4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eDrain Port (e2)\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eR 1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eInternal Volume\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e1.3 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eDry Weight\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e6.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"background:#008377CF;color:#fff;padding:8px 12px;text-align:left;font-size:0.9em;\"\u003eTesting \u0026amp; Certification\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eLeakage Test\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eYes — test medium: air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eDesign \u0026amp; Manufacturing\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e2014\/68\/EU compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth colspan=\"2\" style=\"background:#008377CF;color:#fff;padding:8px 12px;text-align:left;font-size:0.9em;\"\u003eWarranty\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-weight:600;width:50%;font-size:0.9em;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e20 years — SpiroLIFE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch3 style=\"color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-top:28px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin:22px 0;\"\u003e\n\u003cdetails style=\"border:1px solid #ddd;border-radius:4px;margin:8px 0;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:10px 14px;cursor:pointer;font-weight:600;border-radius:4px;list-style:none;\"\u003eWhy does a heat pump installation need a low-loss header \/ hydraulic separator?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eHeat pumps are \u003cstrong\u003evariable-output devices\u003c\/strong\u003e that modulate flow to maintain efficiency. If the heat pump primary circuit and the secondary distribution circuit share the same pump, flow changes in one circuit directly affect the other — zone valves opening and closing cause pressure fluctuations that destabilise the heat pump refrigerant circuit. A low-loss header like the AX100J \u003cstrong\u003ehydraulically decouples the two circuits\u003c\/strong\u003e, allowing each pump to operate independently — essential for stable COP and heat pump longevity.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-radius:4px;margin:8px 0;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:10px 14px;cursor:pointer;font-weight:600;border-radius:4px;list-style:none;\"\u003eCan the AX100J be used for both heating and cooling systems?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eYes. The AX100J is suitable for \u003cstrong\u003eboth heating and cooling applications\u003c\/strong\u003e with water or glycol up to 50% v\/v. For cooling, connect the cooler (chiller or heat pump evaporator side) to the upper connections to ensure the coldest water is where the SpiroTube collects dissolved gas most effectively.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-radius:4px;margin:8px 0;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:10px 14px;cursor:pointer;font-weight:600;border-radius:4px;list-style:none;\"\u003eWhat is the maximum heat pump size the AX100J can support?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eWith a maximum flow rate of \u003cstrong\u003e2.0 m³\/h\u003c\/strong\u003e at up to 1 m\/s, the AX100J suits heat pump primary circuits typically up to approximately \u003cstrong\u003e10–14 kW output at a standard Δt of 5–7 K\u003c\/strong\u003e (typical heat pump primary ΔT). For larger systems, the \u003cstrong\u003eAX125J (Rp 1¼\", 3.6 m³\/h)\u003c\/strong\u003e is the appropriate step up.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-radius:4px;margin:8px 0;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:10px 14px;cursor:pointer;font-weight:600;border-radius:4px;list-style:none;\"\u003eDoes the AX100J replace the need for separate SpiroTrap MB3 and SpiroVent units?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eYes — for a \u003cstrong\u003edual-circuit system\u003c\/strong\u003e, the AX100J performs the hydraulic separation, air deaeration, and magnetic dirt separation that would otherwise require three separate devices and eight connection points. For a single-circuit combi-boiler system without hydraulic separation requirements, a separate MB3 and SpiroVent RV2 pairing remains the correct specification.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-radius:4px;margin:8px 0;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:10px 14px;cursor:pointer;font-weight:600;border-radius:4px;list-style:none;\"\u003eHow should the expansion vessel be connected relative to the AX100J?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eSpirotech recommends connecting the \u003cstrong\u003eexpansion vessel on the suction side of the pump\u003c\/strong\u003e or circulator, as with all hydronic system piping. The AX100J installation diagram (available from Spirotech) shows the expansion vessel connected to the secondary circuit suction point, not directly to the separator.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #ddd;border-radius:4px;margin:8px 0;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:10px 14px;cursor:pointer;font-weight:600;border-radius:4px;list-style:none;\"\u003eIs the AX100J suitable for retrofit into an existing heat pump installation?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eYes — the AX100J is designed for \u003cstrong\u003enew build, refurbishment, and retrofit\u003c\/strong\u003e applications. The Rp 1\" BSP threading suits standard plant room pipework. On a retrofit, the primary and secondary circuits will need to be temporarily disconnected and the existing header removed. Spirotech recommends a system power-flush before fitting to ensure the new separator begins with clean system water.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Spirotech","offers":[{"title":"Default Title","offer_id":64950229565789,"sku":"AX100J","price":547.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/SpirotechSpiroCrossAX100J1inHydraulicSeparatorHeatPump.jpg?v=1781163012","url":"https:\/\/qualityheating.co.uk\/products\/spirotech-spirocross-ax100j-1in-hydraulic-separator-heat-pump","provider":"AIZO Quality Heating","version":"1.0","type":"link"}