API 6A Ventil

API 6A gate valve coomply with the latest API Spec.6A,metal to metal seal is used between the body and the bonnet,metal seal or non-metal seal is used between the seat and the gate plate as needs. Back seal is set between the stem and the bonnet in order to replace the fill of the valve-stem when the valve bears under pressure.The seal surface is welded with hard alloy corrosion resistance and impact resistance. For the parallel gate and the seat with preloaded spring ,operation torque is slight. Working Pressure: 2000 15000PSI; Nominal Bore 2 1/16 4 1/16Product Specification LevelPSL1 4Material ClassAA FFPerformance Requirement LevelPRl, 2Working TemperatureK V(-60 +121)