{"product_id":"drayton-22mm-motorised-2-port-zone-valve-snap-on-actuator","title":"Drayton 22mm Motorised 2 Port Zone Valve \u0026 Snap-On Actuator","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003e\u003cstrong\u003eDrayton 22mm Motorised 2 Port Zone Valve \u0026amp; Snap-On Actuator (5 Wire SPST Switch) – MPN: 27100\u003c\/strong\u003e is a compact motorised zone valve for controlling individual heating or hot water zones in domestic wet central heating systems. It combines a 22mm compression brass valve body with a low-energy 230V snap-on actuator, providing reliable on\/off control with 100% tight shut-off and standard 5-wire SPST end-switch wiring.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-port normally-closed zone valve\u003c\/strong\u003e – valve is closed when de-energised and opens on demand, ideal for S-Plan zoning of central heating and hot water circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e22mm compression connections\u003c\/strong\u003e – suited to common domestic primary pipework, offering good flow with low hydraulic resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnap-on actuator\u003c\/strong\u003e – actuator clips on and off the valve body using a side release button, allowing actuator or motor replacement without draining the system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-wire SPST auxiliary switch\u003c\/strong\u003e – built-in single-pole, single-throw end switch for boiler and pump interlock via an industry-standard 5-core cable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring-return mechanism\u003c\/strong\u003e – energise-to-open with spring return to closed when power is removed for fail-safe shut-off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% tight shut-off\u003c\/strong\u003e – designed for positive closure to prevent unwanted circulation and temperature overshoot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual lever \u0026amp; position indicator\u003c\/strong\u003e – manual lever for filling\/override and a clear visual indicator of valve position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServiceable design\u003c\/strong\u003e – actuator and motor are replaceable components, helping to extend overall system life and minimise disruption.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \/ Range:\u003c\/strong\u003e Drayton – Motorised Two Port Valves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel \/ Part:\u003c\/strong\u003e ZA5\/679-2 22mm 2-port zone valve with actuator (Part No. 27100).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve type:\u003c\/strong\u003e 2-port, normally-closed zone valve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e 22mm compression (for copper tube).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve body material:\u003c\/strong\u003e brass forging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor supply:\u003c\/strong\u003e 230V AC, 50Hz, approximately 5W synchronous motor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e energise to open; motor opening time typically around 14 seconds, spring return around 6 seconds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum static pressure:\u003c\/strong\u003e 8.6 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum differential pressure:\u003c\/strong\u003e up to approximately 0.7 bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater temperature range:\u003c\/strong\u003e 2°C to 93°C; maximum ambient temperature 52°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd switch type:\u003c\/strong\u003e SPST auxiliary switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch rating:\u003c\/strong\u003e 24–230V AC, 3(1)A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable:\u003c\/strong\u003e approximately 1m, 5-core flex.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e designed to comply with EN 60730-1 and associated control standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-port S-Plan systems providing independent control of central heating and stored hot water zones.\u003c\/li\u003e\n\u003cli\u003eZoned heating systems in small to medium homes using 22mm primary pipework.\u003c\/li\u003e\n\u003cli\u003eReplacement for existing 22mm Drayton or similar 2-port valves wired with a standard 5-wire zone-valve scheme.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the brass valve body observing the correct flow direction arrow, using clean, deburred pipework and suitable jointing on the 22mm compression fittings.\u003c\/li\u003e\n\u003cli\u003eFit or replace the snap-on actuator after pressure testing where possible, and always isolate mains power before any electrical work.\u003c\/li\u003e\n\u003cli\u003eWire the valve using the standard 5-wire SPST zone valve diagram via an appropriate wiring centre, interlocked with room\/cylinder thermostats and boiler controls.\u003c\/li\u003e\n\u003cli\u003ePosition the valve so the actuator, manual lever and position indicator are accessible for future servicing and diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Drayton Controls","offers":[{"title":"Default Title","offer_id":62858087334237,"sku":"27100","price":63.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Drayton22mmMotorised2PortZoneValve_Snap-OnActuator_5WireSPSTSwitch.jpg?v=1765526611","url":"https:\/\/qualityheating.co.uk\/products\/drayton-22mm-motorised-2-port-zone-valve-snap-on-actuator","provider":"AIZO Quality Heating","version":"1.0","type":"link"}