Pump Suction Control Valve Model 50B-5KG, Globe Pattern, Factory Mutual Approved, Adjustable opening speed for pump suction protection, Pilot control provides wide flow range with minimal pressure variations, Controlled closing for system protection, Modulates within 5% of setting for accurate pressure control, Pressure setting adjustable, Pressure setting not affected by pressure at valve discharge. This valve is designed specifically for fire pump suction control service. It modulates to maintain the pump discharge in relation to the suction head available, thus assuring that the suction head pressure does not fall below the pre-set minimum. STANDARD MATERIALS: Body & Cover: Ductile iron ASTM A-536, Trim: Brass QQ-B-626, Pilot control system: Cast bronze ASTM B62 with SS-303 trim Other materials are available upon request. END DETAILS: 150 OR 300 ANSI B16.42, PRESSURE RATINGS: 150 class-250 psi max. OR 300 class-400 psi max., TEMPERATURE RANGE: Water to 180 deg.F max, ADJUSTMENT RANGE: 5 to 25 psi OR set at 10 psi