{"product_id":"vq425ma1021-honeywell-class-a-combination-gas-valve-dn25-360-mbar","title":"VQ425MA1021 | Honeywell Class “A” Combination Gas Valve DN25 360 mbar","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"144\" data-end=\"396\"\u003eThe Honeywell VQ425MA1021 is a heavy-duty Class “A” combination safety valve block (DN25 \/ 1″ flange size) designed for high-capacity gas burner and boiler applications. It supports a maximum operating pressure of 360 mbar (≈ 36 kPa) and is suited for use with natural gas, propane or other non-corrosive gaseous fuels. Its dual-seat, fast-acting construction ensures reliable shut-off and flow control in demanding industrial environments.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew \/ Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlame Safety Products\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVQ425MA1021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCombination Gas Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass “A” (EN 161)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody Size \/ Flange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDN25 (≈ 1″)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Operating Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e360 mbar (36 kPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePipe Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRp 1″ \/ 1″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e115-230 V AC, 50\/60 Hz (depending version)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOpening Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≈ 30 s (depending coil and config)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClosing Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e–15 °C to +60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eValve Plunger Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChrome-plated steel, anti-friction bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeals \u0026amp; Gaskets\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNBR rubber (hydrocarbon resistant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP 65 (some variants)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Cycles\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 500,000 cycles typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuty Cycle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eContinuous energisation possible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~5 kg (~11 lb) depending variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eVQ425MA1021\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe VQ425MA1021 belongs to Honeywell’s VQ400M series of Class “A” combination valves configured for industrial burner applications. It pairs two safety shut-off valves (V1 and V2) in one body: the first valve opens rapidly while the second valve may be configured for fast or slow opening and\/or flow regulation. The unit accommodates flange mounting (DN25) and features options for accessories like position indicators, bypass or vent valves, and pressure-switch tap points. In addition to its safety shut-off role, it conforms to EN 161 (Class “A”) standards and is suitable for use in gas trains of automatic burners, incinerators, melting furnaces, and large-capacity boilers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClass “A” Certified Safety Valve: Meets EN 161 Class “A” requirements for gaseous fuel shut-off in industrial systems.\u003c\/li\u003e\n\u003cli\u003eDual-Valve Design Block: Two safety valves (V1 and V2) built into one body for primary shut-off and controlled flow regulation.\u003c\/li\u003e\n\u003cli\u003e360 mbar Maximum Operating Pressure: Supports moderate pressure gas systems up to ~36 kPa.\u003c\/li\u003e\n\u003cli\u003eFlange\/Body Size DN25 (1″): Compatible with 1ʺ pipe or flange kits for industrial install flexibility.\u003c\/li\u003e\n\u003cli\u003eFast Closing Time (\u0026lt;1 s): Ensures rapid shut-off under fault or emergency conditions.\u003c\/li\u003e\n\u003cli\u003eFlexible Opening Profile: Standard fast opening for V1; V2 optionally configured for slow or throttled opening.\u003c\/li\u003e\n\u003cli\u003eWide Ambient Temperature Range: Suitable for –15 °C to +60 °C (≈ 5 °F to 140 °F) ambient installations.\u003c\/li\u003e\n\u003cli\u003eRobust Construction: Body made of aluminum alloy die-cast, plunger in chrome-plated steel, anti-friction bearings, NBR hydrocarbon-resistant seals.\u003c\/li\u003e\n\u003cli\u003eMountable Accessories: Supports valve position indicator, pressure-switch taps, bypass or vent valves for system integration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe VQ425MA1021 delivers the performance, safety shut-off capability, and configurability required for high-duty industrial gas burner systems.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49105127866624,"sku":"VQ425MA1021","price":1880.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/S6c5c4b5525d8404fbcf715767241397fk.jpg?v=1785540894","url":"https:\/\/alotechparts.com\/products\/vq425ma1021-honeywell-class-a-combination-gas-valve-dn25-360-mbar","provider":"Alo Tech Solutions","version":"1.0","type":"link"}