{"product_id":"stainless-steel-underfloor-heating-manifold-with-pressure-gauge-auto-air-vent-2-to-12-port-options","title":"Stainless Steel Underfloor Heating Manifold with Pressure Gauge \u0026 Auto Air Vent – 2 to 12 Port Options","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eStainless Steel UFH Manifold\u003c\/strong\u003e is the central distribution hub of any wet \u003cstrong\u003eunderfloor heating system\u003c\/strong\u003e, available in \u003cstrong\u003e2 to 12 port configurations\u003c\/strong\u003e to match projects of every scale. Manufactured to \u003cstrong\u003eBS EN 1264-4\u003c\/strong\u003e, each manifold provides precise, independent \u003cstrong\u003eflow-rate balancing\u003c\/strong\u003e across every heating circuit via a \u003cstrong\u003eregulating shut-off valve\u003c\/strong\u003e integrated into the return rail — ensuring consistent comfort throughout every zone. The manifold ships \u003cstrong\u003eready-mounted on its wall bracket\u003c\/strong\u003e with \u003cstrong\u003elow-noise DIN 4109 pipe clamps\u003c\/strong\u003e, a \u003cstrong\u003ebuilt-in pressure gauge\u003c\/strong\u003e, and an \u003cstrong\u003eautomatic air vent\u003c\/strong\u003e, so commissioning begins the moment installation is complete.\u003c\/p\u003e\n\n\u003c!-- STAT STRIP --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:20px 0;\"\u003e\n  \u003cdiv style=\"background:#008377;color:#fff;padding:12px 18px;border-radius:6px;flex:1;min-width:130px;text-align:center;\"\u003e\n\u003cstrong style=\"font-size:1.25em;\"\u003e2–12\u003c\/strong\u003e\u003cbr\u003ePort Options\u003c\/div\u003e\n  \u003cdiv style=\"background:#008377;color:#fff;padding:12px 18px;border-radius:6px;flex:1;min-width:130px;text-align:center;\"\u003e\n\u003cstrong style=\"font-size:1.25em;\"\u003eEN 1264-4\u003c\/strong\u003e\u003cbr\u003eCompliant\u003c\/div\u003e\n  \u003cdiv style=\"background:#008377;color:#fff;padding:12px 18px;border-radius:6px;flex:1;min-width:130px;text-align:center;\"\u003e\n\u003cstrong style=\"font-size:1.25em;\"\u003eM30×1.5\u003c\/strong\u003e\u003cbr\u003eActuator Port\u003c\/div\u003e\n  \u003cdiv style=\"background:#008377;color:#fff;padding:12px 18px;border-radius:6px;flex:1;min-width:130px;text-align:center;\"\u003e\n\u003cstrong style=\"font-size:1.25em;\"\u003e¾\" Eurocone\u003c\/strong\u003e\u003cbr\u003eCircuit Connections\u003c\/div\u003e\n  \u003cdiv style=\"background:#008377;color:#fff;padding:12px 18px;border-radius:6px;flex:1;min-width:130px;text-align:center;\"\u003e\n\u003cstrong style=\"font-size:1.25em;\"\u003e1\" MT\u003c\/strong\u003e\u003cbr\u003eHeat Source Port\u003c\/div\u003e\n  \u003cdiv style=\"background:#008377;color:#fff;padding:12px 18px;border-radius:6px;flex:1;min-width:130px;text-align:center;\"\u003e\n\u003cstrong style=\"font-size:1.25em;\"\u003eEPDM\u003c\/strong\u003e\u003cbr\u003eO-Ring Gaskets\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- RED CALLOUT --\u003e\n\u003cdiv style=\"background:#fff3f3;border-left:5px solid #cc0000;padding:14px 18px;margin:18px 0;border-radius:4px;\"\u003e\n  \u003cstrong style=\"color:#cc0000;\"\u003eInstaller Note:\u003c\/strong\u003e Manifold connections to the heat source use \u003cstrong\u003e1\" MT flat-sealing fittings\u003c\/strong\u003e — do not over-torque. Ball valves (sold separately) must be fitted to the supply and return ports before system fill. Commission flow rates per circuit using the integrated return-rail regulating valves before fitting actuators.\n\u003c\/div\u003e\n\n\u003c!-- AMBER CALLOUT --\u003e\n\u003cdiv style=\"background:#fffbea;border-left:5px solid #e6a817;padding:14px 18px;margin:18px 0;border-radius:4px;\"\u003e\n  \u003cstrong style=\"color:#b87d00;\"\u003eCompatibility Note:\u003c\/strong\u003e Circuit connections use the \u003cstrong\u003e¾\" Euroconus standard\u003c\/strong\u003e — compatible with 15×2mm and 16×2mm multilayer (Multi\/PEX) and PEX pipe using the appropriate Euroconus fittings (available separately). Actuators with \u003cstrong\u003eM30×1.5 thread\u003c\/strong\u003e fit directly to every return-rail valve port.\n\u003c\/div\u003e\n\n\u003c!-- TEAL CALLOUT --\u003e\n\u003cdiv style=\"background:#e8f7f6;border-left:5px solid #008377;padding:14px 18px;margin:18px 0;border-radius:4px;\"\u003e\n  \u003cstrong style=\"color:#008377;\"\u003eSystem Ready:\u003c\/strong\u003e Each manifold ships pre-assembled on its wall bracket with \u003cstrong\u003epressure gauge\u003c\/strong\u003e and \u003cstrong\u003eauto air vent\u003c\/strong\u003e factory-fitted. The integrated end-set provides \u003cstrong\u003e¾\" swivel connections\u003c\/strong\u003e for shut-off, filling, draining, and flushing — no additional fitting required for commissioning.\n\u003c\/div\u003e\n\n\u003c!-- FEATURE CARDS --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:16px;margin:24px 0;\"\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f9f9f9;border-radius:8px;padding:18px;border-top:3px solid #008377;\"\u003e\n    \u003cstrong style=\"color:#008377;font-size:1.05em;\"\u003eStainless Steel Construction\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003eThe manifold body is fabricated from \u003cstrong\u003estainless steel\u003c\/strong\u003e for outstanding corrosion resistance in closed heating circuits — no dezincification risk and no degradation from system inhibitor chemicals. This makes it equally suited to \u003cstrong\u003eheat pump low-temperature systems\u003c\/strong\u003e and traditional boiler circuits.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f9f9f9;border-radius:8px;padding:18px;border-top:3px solid #008377;\"\u003e\n    \u003cstrong style=\"color:#008377;font-size:1.05em;\"\u003ePer-Circuit Flow Balancing\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003eEvery return port incorporates a \u003cstrong\u003eregulating shut-off valve\u003c\/strong\u003e with continuous flow adjustment — even at high flow rates. This allows the installer to balance each loop precisely against system design flow, preventing dominant circuits from over-heating and ensuring \u003cstrong\u003eeven temperature distribution\u003c\/strong\u003e across all zones.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f9f9f9;border-radius:8px;padding:18px;border-top:3px solid #008377;\"\u003e\n    \u003cstrong style=\"color:#008377;font-size:1.05em;\"\u003eActuator-Ready Return Rail\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003eEvery return circuit valve is pre-fitted with an \u003cstrong\u003eM30×1.5 actuator port\u003c\/strong\u003e, accepting all standard 24V normally-closed or normally-open thermal actuators. This enables full zone-by-zone thermostatic control without any adaptation — simply click or screw the actuator onto the valve body.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f9f9f9;border-radius:8px;padding:18px;border-top:3px solid #008377;\"\u003e\n    \u003cstrong style=\"color:#008377;font-size:1.05em;\"\u003eEPDM O-Ring Gaskets\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003e\u003cstrong\u003ePremium EPDM O-ring gaskets\u003c\/strong\u003e throughout the valve bodies ensure lasting ease of operation and a reliable pressure seal. EPDM resists glycol-based inhibitors and elevated temperatures, meaning valves stay smooth to operate and leak-free over the life of the system.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f9f9f9;border-radius:8px;padding:18px;border-top:3px solid #008377;\"\u003e\n    \u003cstrong style=\"color:#008377;font-size:1.05em;\"\u003ePressure Gauge \u0026amp; Auto Air Vent\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003eThe factory-fitted \u003cstrong\u003epressure gauge\u003c\/strong\u003e gives at-a-glance system pressure during filling and commissioning. The \u003cstrong\u003eautomatic air vent\u003c\/strong\u003e on the supply header continuously purges micro-bubbles from the circuit — eliminating air locks that would otherwise cause noise or cold spots in the floor.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f9f9f9;border-radius:8px;padding:18px;border-top:3px solid #008377;\"\u003e\n    \u003cstrong style=\"color:#008377;font-size:1.05em;\"\u003eWall-Bracket \u0026amp; Fill\/Drain End Set\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003eThe manifold arrives \u003cstrong\u003eready-mounted on a wall bracket\u003c\/strong\u003e with \u003cstrong\u003elow-noise pipe clamps to DIN 4109\u003c\/strong\u003e, eliminating site fabrication time. The integrated end-set includes \u003cstrong\u003e¾\" swivel connections\u003c\/strong\u003e for system shut-off, filling, draining, and loop flushing — all the commissioning ports in one tidy assembly.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- SPEC TABLE --\u003e\n\u003cdiv style=\"overflow-x:auto;margin:24px 0;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:0.95em;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background:#008377;color:#fff;\"\u003e\n      \u003cth style=\"padding:10px 14px;text-align:left;\" colspan=\"3\"\u003eVariant Selection — Part Numbers \u0026amp; Port Count\u003c\/th\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background:#008377;color:#fff;\"\u003e\n      \u003cth style=\"padding:8px 14px;text-align:left;\"\u003ePart Number\u003c\/th\u003e\n      \u003cth style=\"padding:8px 14px;text-align:left;\"\u003eDescription\u003c\/th\u003e\n      \u003cth style=\"padding:8px 14px;text-align:left;\"\u003eCircuits\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117502\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e2 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117503\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e3 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117504\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e4 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117505\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e5 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117506\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e6 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117507\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e7 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117508\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e8 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117509\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e9 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e9\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117510\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e10 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117511\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e11 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e11\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117512\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e12 Port Manifold with Pressure Gauge \u0026amp; Auto Air Vent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e12\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background:#008377;color:#fff;\"\u003e\n      \u003cth style=\"padding:10px 14px;text-align:left;\" colspan=\"3\"\u003eTechnical Specification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eStandard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003eBS EN 1264-4 (radiant heating\/cooling systems)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eHeat Source Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003e1\" MT flat-sealing (supply \u0026amp; return)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eCircuit Connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003e¾\" Euroconus (clamp ring\/compression)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eActuator Thread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003eM30×1.5 (all common 24V actuators)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eValve Gaskets\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003eEPDM O-rings\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eEnd Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003e¾\" swivel — shut-off, fill, drain \u0026amp; flush\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eIncluded Accessories\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003ePressure gauge, auto air vent, wall bracket, DIN 4109 pipe clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003eRadiant floor heating \u0026amp; cooling distribution\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eCompatible Pipe Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\" colspan=\"2\"\u003eMulti\/PEX, PERT, PERT-AL-PERT (via Euroconus fittings)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003c!-- FAQs --\u003e\n\u003cdiv style=\"margin:28px 0;\"\u003e\n  \u003cdiv style=\"background:#008377;color:#fff;padding:12px 18px;border-radius:6px 6px 0 0;font-weight:bold;font-size:1.05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:12px 16px;cursor:pointer;font-weight:bold;background:#f9f9f9;\"\u003eHow do I select the correct port count for my project?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eChoose one port per \u003cstrong\u003eheating loop\/circuit\u003c\/strong\u003e. A typical UFH layout allocates one loop per room or zone — for example, a 5-room ground floor would use a \u003cstrong\u003e5 port manifold\u003c\/strong\u003e. Larger open-plan areas may require two loops and therefore two ports. Always refer to your UFH design layout plan, which will specify the number of loops and their target flow rates.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:12px 16px;cursor:pointer;font-weight:bold;background:#f9f9f9;\"\u003eWhat pipe types are compatible with this manifold?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eThe ¾\" Euroconus connections accept \u003cstrong\u003e15×2mm and 16×2mm multilayer (Multi\/PEX), PERT, and PERT-AL-PERT pipe\u003c\/strong\u003e using the appropriate Euroconus compression fittings (sold separately). The Euroconus system does not require any specialist crimping tools — the compression nut, pipe support insert, and split olive are tightened by hand then torqued with a spanner.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:12px 16px;cursor:pointer;font-weight:bold;background:#f9f9f9;\"\u003eWhich actuators are compatible with the return-rail valve ports?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eAny thermal actuator with an \u003cstrong\u003eM30×1.5 thread\u003c\/strong\u003e will fit directly — this is the universal Eurostandard actuator fixing used by all major manufacturers including Honeywell, Salus, Danfoss, Siemens, and Schneider. Both \u003cstrong\u003enormally-open (NO)\u003c\/strong\u003e and \u003cstrong\u003enormally-closed (NC)\u003c\/strong\u003e variants are physically compatible; select NC for most zone-control wiring centre installations.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:12px 16px;cursor:pointer;font-weight:bold;background:#f9f9f9;\"\u003eDoes the manifold include ball valves for isolation?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eThe manifold body ships with the \u003cstrong\u003eintegrated end-set\u003c\/strong\u003e providing fill\/drain\/flush ports, but \u003cstrong\u003e1\" isolation ball valves\u003c\/strong\u003e for the main supply and return connections to the heat source are sold separately. These should always be fitted to allow the manifold to be isolated for maintenance without draining the whole system. Both \u003cstrong\u003eplain-handle\u003c\/strong\u003e (ZL-4130) and \u003cstrong\u003etemperature-gauge\u003c\/strong\u003e (ZL-4012) ball valve sets are available.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:12px 16px;cursor:pointer;font-weight:bold;background:#f9f9f9;\"\u003eIs this manifold suitable for use with a heat pump system?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eYes. The \u003cstrong\u003estainless steel body\u003c\/strong\u003e is fully compatible with low-temperature heat pump circuits and inhibited closed systems. UFH is an ideal emitter for heat pumps as it operates efficiently at flow temperatures of \u003cstrong\u003e35–45°C\u003c\/strong\u003e, within the SCOP-optimised range of most air source heat pumps. Ensure the system blending valve (sold separately) is set to the correct design flow temperature for your heat pump.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails style=\"border:1px solid #ddd;border-top:none;padding:0;\"\u003e\n    \u003csummary style=\"padding:12px 16px;cursor:pointer;font-weight:bold;background:#f9f9f9;\"\u003eHow is the manifold balanced after installation?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eEach circuit's \u003cstrong\u003ereturn-rail regulating valve\u003c\/strong\u003e has a graduated adjustment that restricts flow to match the design rate for that loop. With all actuators removed or open, set the system running and use a flow indicator (or the system pump head) to check total flow. Adjust each return valve, starting from the shortest loop, until all circuits achieve their target flow rates. Refit actuators and thermostats once balancing is complete.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"AIZO - Quality Heating","offers":[{"title":"2 Port","offer_id":64926682218845,"sku":"ZL-117502","price":43.0,"currency_code":"GBP","in_stock":true},{"title":"3 Port","offer_id":64926682251613,"sku":"ZL-117503","price":51.0,"currency_code":"GBP","in_stock":true},{"title":"4 Port","offer_id":64926682284381,"sku":"ZL-117504","price":61.0,"currency_code":"GBP","in_stock":true},{"title":"5 Port","offer_id":64926682317149,"sku":"ZL-117505","price":73.0,"currency_code":"GBP","in_stock":true},{"title":"6 Port","offer_id":64926682349917,"sku":"ZL-117506","price":87.0,"currency_code":"GBP","in_stock":true},{"title":"7 Port","offer_id":64926682382685,"sku":"ZL-117507","price":99.95,"currency_code":"GBP","in_stock":true},{"title":"8 Port","offer_id":64926682415453,"sku":"ZL-117508","price":110.0,"currency_code":"GBP","in_stock":true},{"title":"9 Port","offer_id":64926682448221,"sku":"ZL-117509","price":125.0,"currency_code":"GBP","in_stock":true},{"title":"10 Port","offer_id":64926682480989,"sku":"ZL-117510","price":135.0,"currency_code":"GBP","in_stock":true},{"title":"11 Port","offer_id":64926682513757,"sku":"ZL-117511","price":150.0,"currency_code":"GBP","in_stock":true},{"title":"12 Port","offer_id":64926682546525,"sku":"ZL-117512","price":170.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Stainless_Steel_Underfloor_Heating_Manifold_with_Pressure_Gauge_Auto_Air_Vent_3_Port.jpg?v=1780939774","url":"https:\/\/qualityheating.co.uk\/products\/stainless-steel-underfloor-heating-manifold-with-pressure-gauge-auto-air-vent-2-to-12-port-options","provider":"AIZO Quality Heating","version":"1.0","type":"link"}