{"product_id":"manifold-ball-valve-set-1-ufh-red-blue-handles-pair","title":"Manifold Ball Valve Set 1\" UFH – Red \u0026 Blue Handles (Pair)","description":"\u003c!-- SEO Product Name: 1\" UFH Manifold Ball Valve Set – Red \u0026 Blue Handles (Pair) – ZL-4130 --\u003e\n\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\u003eZL-4130 Ball Valve Set\u003c\/strong\u003e is a matched pair of \u003cstrong\u003e1\" BSP full-bore isolation valves\u003c\/strong\u003e supplied in \u003cstrong\u003ecolour-coded red and blue\u003c\/strong\u003e to distinguish supply from return. Designed to connect directly to the \u003cstrong\u003e1\" MT flat-sealing ports\u003c\/strong\u003e on standard UFH stainless steel manifolds, they provide a positive quarter-turn shut-off for isolating the manifold from the heat source — essential for system maintenance, pressure testing, and future servicing without draining the entire circuit.\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;\"\u003e1\"\u003c\/strong\u003e\u003cbr\u003eBSP Size\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;\"\u003eFull Bore\u003c\/strong\u003e\u003cbr\u003eBall Valve\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;\"\u003ePair\u003c\/strong\u003e\u003cbr\u003eSupplied\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;\"\u003eRed \u0026amp; Blue\u003c\/strong\u003e\u003cbr\u003eColour Coded\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;\"\u003eBrass\u003c\/strong\u003e\u003cbr\u003eConstruction\u003c\/div\u003e\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 These valves are sized for the \u003cstrong\u003e1\" MT connections\u003c\/strong\u003e on the ZL-117502–ZL-117512 stainless steel manifold range. Check thread type before ordering — \u003cstrong\u003ered handle\u003c\/strong\u003e fits the supply (flow) port; \u003cstrong\u003eblue handle\u003c\/strong\u003e fits the return port. If temperature monitoring at the manifold inlet\/outlet is required, select the \u003cstrong\u003eZL-4012 set\u003c\/strong\u003e with integrated temperature gauges instead.\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;\"\u003eInstaller Tip:\u003c\/strong\u003e Fit these ball valves \u003cstrong\u003ebefore filling the system\u003c\/strong\u003e. Having isolation at the manifold means the manifold can be removed or serviced in future without draining the entire primary circuit — a requirement on any professional installation.\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;\"\u003eQuarter-Turn Full-Bore Isolation\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003eA \u003cstrong\u003efull-bore ball valve\u003c\/strong\u003e introduces negligible pressure drop when open, ensuring the manifold pump group receives full system head. The quarter-turn action gives a clear open\/closed indication and positive shut-off — no partial seating, no drips.\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;\"\u003eColour-Coded Red \u0026amp; Blue Handles\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003eThe \u003cstrong\u003ered handle\u003c\/strong\u003e is fitted to the flow (supply) valve and the \u003cstrong\u003eblue handle\u003c\/strong\u003e to the return — an industry-standard colour convention that eliminates installation errors and speeds up commissioning. Each handle is secured to prevent rotation on the stem.\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;\"\u003eBrass Construction\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003eValve bodies are manufactured from \u003cstrong\u003ebrass\u003c\/strong\u003e, providing excellent strength and corrosion resistance in closed heating circuits. Brass is the industry-standard material for hydronic system isolation valves and is compatible with all common system inhibitors.\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;\"\u003eDirect Manifold Compatibility\u003c\/strong\u003e\n    \u003cp style=\"margin:8px 0 0;\"\u003eSupplied as a matched pair specifically dimensioned for the \u003cstrong\u003e1\" supply and return connections\u003c\/strong\u003e on the ZL-series stainless steel manifold. Installation requires only a suitably-sized spanner — no adapters or additional fittings needed.\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=\"2\"\u003eTechnical Specification — ZL-4130\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\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-4130\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e1\" Ball Valve Set for Manifold — Blue \u0026amp; Red Handle (Pair)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eValve Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e1\" BSP\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eValve Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eFull-bore ball valve, quarter-turn\u003c\/td\u003e\n\u003c\/tr\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;\"\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eHandle Colours\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eRed (flow\/supply) \u0026amp; Blue (return)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003ePair (2 valves)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eTemperature Gauge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eNot included (see ZL-4012 for gauge version)\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;\"\u003eUFH manifold supply \u0026amp; return isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003e\u003cstrong\u003eCompatible Manifolds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 14px;\"\u003eZL-117502 to ZL-117512 stainless steel manifold range\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;\"\u003eWhat is the difference between ZL-4130 and ZL-4012?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eThe \u003cstrong\u003eZL-4130\u003c\/strong\u003e is a straightforward isolation ball valve pair with colour-coded handles — its sole function is \u003cstrong\u003eon\/off isolation\u003c\/strong\u003e of the manifold. The \u003cstrong\u003eZL-4012\u003c\/strong\u003e adds a \u003cstrong\u003ebuilt-in temperature gauge\u003c\/strong\u003e to each valve, allowing the installer to read supply and return temperatures at the manifold without fitting separate temperature sensors. Choose ZL-4012 where temperature monitoring at the manifold is required.\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;\"\u003eAre these valves compatible with heat pump systems?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eYes. The \u003cstrong\u003ebrass valve bodies\u003c\/strong\u003e are compatible with closed heating circuits using all standard inhibitors, including those recommended for heat pump installations (e.g. Fernox HP5, Sentinel X100). Ensure the system is correctly inhibited to prevent corrosion throughout the circuit.\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;\"\u003eDo I need these if the manifold already has an end-set?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eYes. The \u003cstrong\u003eend-set\u003c\/strong\u003e on the manifold body provides \u003cstrong\u003efill, drain, and flush\u003c\/strong\u003e connections for the circuit loops — it does not isolate the manifold from the primary heat source pipework. The \u003cstrong\u003eZL-4130 ball valves\u003c\/strong\u003e fit between the primary pipework and the 1\" MT manifold inlet\/outlet, allowing the manifold to be shut off independently of the boiler or heat pump circuit.\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 tools are needed for installation?\u003c\/summary\u003e\n    \u003cdiv style=\"padding:12px 16px;\"\u003eA \u003cstrong\u003epipe wrench or adjustable spanner\u003c\/strong\u003e is sufficient to tighten the valve connections to the manifold ports. Apply \u003cstrong\u003ePTFE tape or thread sealant\u003c\/strong\u003e to the male thread before assembly. Do not over-torque — finger-tight plus ¾ to 1 full turn with a spanner is adequate for a sound seal on a flat-face connection.\u003c\/div\u003e\n  \u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"AIZO - Quality Heating","offers":[{"title":"Default Title","offer_id":64926943478109,"sku":"ZL-4130","price":17.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ManifoldBallValveSet1inchUFH_Red_BlueHandlesPair.jpg?v=1780940970","url":"https:\/\/qualityheating.co.uk\/products\/manifold-ball-valve-set-1-ufh-red-blue-handles-pair","provider":"AIZO Quality Heating","version":"1.0","type":"link"}