V.K. Valves Pvt. Ltd. Manufactures Combined Cock and Feed Check Valve. V.K. Valves Pvt. Ltd. Is an ISO 9001:2000 accredited company. The Combined Cock and Feed Check Valve come with Steam Working Pressure of 10.55 Kg/cm2g [150psig]. The system has Maximum Permissible Temp of 2250C [4370F]. It also has Hydraulic Test Pressure of 21.1 Kg/cm2g [500psig].