{"product_id":"potter-vsr-3-5","title":"POTTER VSR-3.5","description":"\u003clink\u003e\u003clink\u003e\u003clink\u003e\u003clink\u003e\u003clink\u003e\u003cmeta\u003e\u003cmeta\u003e\u003ctitle\u003eeBay\u003c\/title\u003e\u003clink\u003e\u003clink\u003e\u003clink\u003e\u003cdiv\u003eProduct OverviewThe VSR-3.5 is a highly dependable vane-type waterflow switch designed for use on wet sprinkler systems. Engineered for accuracy and long-term performance, it is certified by UL, cUL, CSFM, and FM, with the VSR-EU version available for CE and VdS compliance. Suitable for steel pipe ranging from 2\" to 8\" (schedules 10–40), this model detects water movement when a minimum flow of 10 GPM (38 LPM) occurs downstream.\u003cbr\u003e\u003cbr\u003eIts design includes two SPDT snap-action switches, an instantly recycling pneumatic retard, and a rugged NEMA 4\/IP54 enclosure, making it ideal for both indoor and outdoor environments. Built to operate under demanding conditions, the VSR-3.5 supports multiple NFPA applications, functions as a sectional flow detector on larger systems, and incorporates a factory-installed non-corrosive sleeve for added durability.\u003cbr\u003e\u003cbr\u003eKey Features- UL, CUL, CSFM Listed and FM Approved; VSR-EU available for EN12259-5 \/ VdS requirements\u003cbr\u003e- Vane-type waterflow detector for wet sprinkler systems\u003cbr\u003e- Compatible with 2\"–8\" steel pipe (Schedules 10–40)\u003cbr\u003e- Flow activation at 10 GPM (38 LPM) or more\u003cbr\u003e- Includes two SPDT (Form C) switches with the following ratings:- 10 A at 125\/250 VAC\u003cbr\u003e- 2 A at 30 VDC (resistive)\u003cbr\u003e- 10 mA minimum at 24 VDC \u003cbr\u003e\u003cbr\u003e- Adjustable pneumatic retard for accurate flow confirmation\u003cbr\u003e- Maximum service pressure of 450 PSI (31 BAR)\u003cbr\u003e- Flow sensitivity range: 4–10 GPM (15–38 LPM)\u003cbr\u003e- Maximum allowable surge: 18 FPS (5.5 m\/s)\u003cbr\u003e- Enclosure rated NEMA 4\/IP54, suitable for indoor or outdoor use\u003cbr\u003e- Operating temperature range: 40°F to 120°F (4.5°C to 49°C)\u003cbr\u003e- Two 1\/2\" conduit knockouts; isolated switch compartments for different voltages\u003cbr\u003e- Factory-installed non-corrosive sleeve\u003cbr\u003e- Applicable for NFPA-13, NFPA-13D, NFPA-13R, and NFPA-72 systems\u003c\/div\u003e\u003clink\u003e\u003clink\u003e\u003clink\u003e\u003clink\u003e\u003clink\u003e","brand":"FIRE ALARM SYS","offers":[{"title":"Default Title","offer_id":51573920465216,"sku":"203790697989","price":237.64,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/6466\/0032\/files\/03f8eb1f9521fac6bc3ff2875aaddb84.jpg?v=1772203525","url":"https:\/\/firealarmsys.com\/products\/potter-vsr-3-5","provider":"FIRE ALARM SYS","version":"1.0","type":"link"}