{"product_id":"spirotech-spirovent-rv2-22mm-air-deaerator-ua022w","title":"Spirotech SpiroVent RV2 22mm Air Deaerator UA022W","description":"\u003cdiv style=\"font-size:16px; max-width:900px; font-family:Arial,Helvetica,sans-serif; color:#222; line-height:1.65;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSpirotech SpiroVent RV2\u003c\/strong\u003e (UA022W) is a \u003cstrong\u003e22mm brass microbubble air deaerator\u003c\/strong\u003e\nfor \u003cstrong\u003eclosed central heating and cooling systems\u003c\/strong\u003e. Unlike automatic air vents that only expel\nfree air pockets at the vent point, the SpiroVent RV2 uses a \u003cstrong\u003epatented SpiroTube coalescing\nelement\u003c\/strong\u003e to collect and continuously remove \u003cstrong\u003edissolved microbubbles\u003c\/strong\u003e from the entire\ncirculating system — the cause of noise, cold spots, and corrosion that ordinary bleeding cannot eliminate.\nIndependent research confirms that a \u003cstrong\u003eSpiroVent RV2 paired with a SpiroTrap MB3\u003c\/strong\u003e can reduce\n\u003cstrong\u003egas consumption by up to 13%\u003c\/strong\u003e in residential heating systems.\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;\"\u003eMicrobubble\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.78em;opacity:.85;\"\u003eRemoval grade\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;\"\u003e1.3 m³\/h\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.78em;opacity:.85;\"\u003eMax flow\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;\"\u003eKvs 9.07\u003c\/div\u003e\n\u003cdiv style=\"font-size:0.78em;opacity:.85;\"\u003eFlow coefficient\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;\"\u003eINSTALLER NOTE — POSITION AT HOTTEST POINT\u003c\/strong\u003e\u003cbr\u003eThe SpiroVent RV2 must be installed at the \u003cstrong\u003ehottest point in the system\u003c\/strong\u003e — the \u003cstrong\u003eflow pipe immediately leaving the boiler or heat pump\u003c\/strong\u003e. At this location, water temperature is highest and solubility of dissolved gases lowest, so microbubbles nucleate and are most easily captured. Installing it downstream on cooler pipework significantly reduces effectiveness.\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;\"\u003eAIR DEAERATOR ONLY — PAIR WITH SPIROTRAP FOR FULL PROTECTION\u003c\/strong\u003e\u003cbr\u003eThe SpiroVent RV2 removes \u003cstrong\u003eair and microbubbles only\u003c\/strong\u003e — it does not collect dirt, magnetite, or sludge. For complete system water quality, pair the UA022W with the \u003cstrong\u003eSpiroTrap MB3 UE022WJ\u003c\/strong\u003e on the return pipework. This two-product combination addresses both root causes of central heating degradation in a single, cost-effective installation.\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;\"\u003eWHY STANDARD BLEEDING IS NOT ENOUGH\u003c\/strong\u003e\u003cbr\u003eTraditional automatic air vents remove free air only at the point of installation. \u003cstrong\u003eDissolved microbubbles\u003c\/strong\u003e — gases held in solution that come out of solution as water heats and cools — are invisible, flow throughout the system, and cannot be removed by bleeding. Over time, they form the oxygen-rich environment that drives \u003cstrong\u003eiron oxide (magnetite) formation\u003c\/strong\u003e and reduces circulating pump efficiency.\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;\"\u003eSpiroTube Coalescing Technology\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;\"\u003eThe internal SpiroTube element creates a \u003cstrong\u003elow-velocity coalescing zone\u003c\/strong\u003e where microbubbles merge into larger bubbles, rise to the integral air release valve, and are automatically expelled. The process is \u003cstrong\u003econtinuous and fully passive\u003c\/strong\u003e — no sensors, no electronics, no maintenance of the collection element.\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;\"\u003eHigh-Quality Leak-Proof Air Valve\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;\"\u003eThe \u003cstrong\u003esolid valve seat construction\u003c\/strong\u003e ensures the automatic air release valve closes reliably when system pressure is present, preventing water ingress. This is a known weak point on cheaper deaerators — the Spirotech valve design is why the unit carries a \u003cstrong\u003e20-year SpiroLIFE warranty\u003c\/strong\u003e.\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;\"\u003eNo System Shutdown for Servicing\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;\"\u003eLike the SpiroTrap MB3, the SpiroVent RV2 requires \u003cstrong\u003eno system isolation or depressurisation\u003c\/strong\u003e to service. The automatic air release valve handles discharge continuously. If a manual inspection of the SpiroTube element is required, it can be unscrewed with the system pressurised in service.\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;\"\u003eGlycol-Compatible Design\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;\"\u003eRated to \u003cstrong\u003e50% v\/v ethylene glycol\u003c\/strong\u003e, the UA022W is fully suitable for heat pump primary circuits, underfloor heating systems with antifreeze, and commercial cooling applications. The Viton-sealed valve tolerates the chemical environment of glycol solutions without degradation.\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 — SpiroVent RV2 22mm (UA022W)\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;\"\u003eUA022W\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;\"\u003eSpiroVent RV2 — 22mm — Universal Connection\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;\"\u003e22mm compression ring (with couplers)\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;\"\u003eFlow Direction\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eVariable (reversible)\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 Rate\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e1.3 m³\/h\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;\"\u003eKvs Value\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e9.07 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;\"\u003eInlet\/Outlet Offset\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e0 mm (in-line)\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 (PN 10)\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;\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e0 – 110 °C (continuous)\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 Glycol (Ethylene)\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e50% 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;\"\u003eSuitable for Heating\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eYes\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;\"\u003eSuitable for Cooling\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eYes\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;\"\u003eClosed System\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eYes\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;\"\u003eOpen System\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eNo\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;\"\u003eSolar Applications\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eNo\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 \u0026amp; Construction\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;\"\u003eHousing Material\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;\"\u003eSeparator Type\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eAir (microbubble deaeration)\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;\"\u003eAuto De-aerator\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eYes — integral automatic air release valve\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;\"\u003eMagnet\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003eNo\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;\"\u003eFilter Volume\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003e0.18 litres\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;\"\u003eConstruction Length\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e112 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;\"\u003eWith Drain Tap\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eNo\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;\"\u003eCompliance \u0026amp; Warranty\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;\"\u003eDesign Standard\u003c\/td\u003e\n\u003ctd style=\"background:#f4fafa;padding:7px 12px;font-size:0.9em;\"\u003eEN 13445\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;\"\u003eCE Marking\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:7px 12px;font-size:0.9em;\"\u003e2014\/68\/EU (Pressure Equipment Directive)\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;\"\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;\"\u003eWhat is the difference between a SpiroVent and a standard automatic air vent (AAV)?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eA standard AAV removes \u003cstrong\u003eonly free air\u003c\/strong\u003e at one specific location and is passive until a sizeable air pocket reaches the vent. The SpiroVent RV2 uses a SpiroTube coalescing element to attract and coalesce \u003cstrong\u003edissolved microbubbles from the entire circulating volume\u003c\/strong\u003e. This removes the invisible dissolved gas phase that AAVs cannot address — the phase responsible for ongoing oxygen-driven corrosion.\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 SpiroVent RV2 replace the boiler's built-in air vent?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eNo — the boiler's own air vent should remain in place. The SpiroVent RV2 should be installed \u003cstrong\u003eon the system flow pipework\u003c\/strong\u003e, typically 150–300mm downstream from the boiler outlet, where it deaerates the entire circulating volume. The boiler vent handles local gas pockets; the RV2 handles system-wide dissolved gas over the long term.\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 UA022W suitable for underfloor heating systems?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eYes. Position the SpiroVent RV2 at the \u003cstrong\u003emanifold flow header\u003c\/strong\u003e, which represents the hottest point in an underfloor heating primary distribution circuit. This is particularly important in heat pump underfloor systems where lower flow temperatures mean dissolved gas is released more slowly but equally damaging to pump efficiency over time.\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 unit need annual servicing?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eThe SpiroVent RV2 is largely maintenance-free. The internal SpiroTube element does not need routine replacement. Spirotech recommends a \u003cstrong\u003evisual check of the air release valve annually\u003c\/strong\u003e — confirm it is not weeping water (indicating valve seat wear) and that the top cap is clean and unblocked. If the system has been treated with inhibitor chemicals, confirm they are compatible with the brass housing.\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 happens if the SpiroVent is installed on the return instead of the flow?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;font-size:0.95em;\"\u003eInstalling on the cooler return pipework significantly reduces effectiveness. At lower temperatures, more gas remains dissolved and is not released at the coalescing surface. The unit will still provide \u003cstrong\u003esome benefit\u003c\/strong\u003e, but performance will be well below the rated 13% gas saving figure. Always prioritise the \u003cstrong\u003eflow pipe at the hottest point\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Spirotech","offers":[{"title":"Default Title","offer_id":64950160294237,"sku":"UA022W","price":129.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/SpirotechSpiroVentRV2AirDeaerator.jpg?v=1781161619","url":"https:\/\/qualityheating.co.uk\/products\/spirotech-spirovent-rv2-22mm-air-deaerator-ua022w","provider":"AIZO Quality Heating","version":"1.0","type":"link"}