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Features • High Flow Capacity—The primary poppet is held out of the flow stream while the secondary poppet is held normally open to minimize head loss across the valve and to protect the poppet seals from damage and erosion. True 1 1/2" (4 cm) and 2" (5 cm) body sizes ensure maximum flow. • Fire Protection — A fusible link trips the valve closed at 165° F to shut off fuel supply to the dispenser. • Main Poppet Seat Integral to the Top Assembly— Having the main poppet seat as an integral part of the valve top assures a new, clean seating surface is installed each time the top is replaced. This design also ensures that the integrity of the seal between the valve top and bottom is verified during line testing and allows full inspection of the main poppet when the top is removed. • Duragard-Coat Finish - Provides superior corrosion resistance. • Reliable Shut-off—A stainless steel main spring, a feflon-coated brass packing nut, and a copper/nickel/chrome-plated brass stem are designed to prevent tar build-up and corrosion from interfering with poppet operation after long periods of normal service without activation. • Integral Test Port—A 3/8" (9.5 mm) Test Port allows the piping system to be air tested without breaking any piping connections. • Patented Thermal Relief Valve— Relieves excessive pressure build-up caused by thermal expansion of fuel in the dispenser piping system in the event of fire (double-poppet models only). • Low-Profile Tops — Female and Union-top double-poppet valves have a low-profile top to allow upgrading from OPW single-poppet valves without changing existing piping. • Multiple Mounting Options—Valves are boss-mounted to stabilizer bars in sumps and pans or mounted to bars embedded in the island with optional U-Bolt kits 10UBK-015 (not included). Versatile Combination Body (boss mount/U-Bolt mount) models are available to accommodate most mounting applications with one valve style.