PRESSURE-REDUCING VALVE Russian patent published in 2001 - IPC

FIELD: sanitary fittings for cold and hot water supply systems. SUBSTANCE: valve has body with pipe unions, cover, diaphragm with elastic center, seat, shut-off member with sealing gasket, adjusting member connected with cover by means of thread, hollow bearing member made in form of sleeve, rod secured at diaphragm center and received by sleeve, adjusting spring supported by adjusting member and circular projection of bearing member and damper closed by other cover. Sleeve is located in center hole of adjusting member at circular clearance; blind end of sleeve with rod is located beyond adjusting member. EFFECT: reduced hysteresis loop in valve "flow rate - adjustable pressure" characteristics; reduced radio frequency noise and enhanced stable position of spring. 6 cl, 1 dwg