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The FWL-2 is a pressure only safety relief valve designed specifically for the protection of hot water supply systems where over-pressure conditions are likely to occur as a result of thermal expansion.
The FWL-2 is fitted with a bronze body, brass and stainless steel internal parts, a silicone seat disc and a stainless steel pressure spring. The FWL-2 valve is compact and economical. The standard factory relief settings for 1/2 in. and 3/4 in. are 75, 125 or 150 psi.