Check Valve, Pressure-400Lb, 3/8" In/Out~, One Way Flow., Applications, Hot Water, Cold Water, Steam, Oil Gas, Compounds And, Chemicals, Fits Henny Penny Models~, Lve-202, Lve-203, Lve-204, Ofe-290, Ofe-291, Ofg-390, Ofg-391, Pfe-590, Pfe-591, Pfe-592, Pfg-690, Pfg-691