V.K. Valves Pvt. Ltd. Offers Sight Flow Check Valve. V.K. Valves Pvt. Ltd. Is an ISO 9001:2000 awarded company. The Sight Flow Check Valve is used for visually checking the conditions and leakage of steam trap whether is normal blow off or not. It has a Maximum Working Pressure of 10kg/cm2 [150 Psig]. It also has Maximum Working Temperature of 225 degree Celsius.