ST slab gate valve is a sliding valve with the closing part being parallel gate.The closing part has a single gate or a double gate with a bracing mechanism.The gate pressure to the seat is controlled by the medium pressure acting on the floating disc or the floating seat.In the case of double gate flat gate valves, the retracting mechanism between the two gates can supplement the compression force.
Structural Features:
1. Floating seat, two-way opening and closing, reliable sealing, flexible opening and closing
2. The gate is provided with guide strip for precise guidance, and the sealing surface is sprayed with cemented carbide for erosion resistance
3. High bearing capacity of valve body, straight channel, fully open, connected with the gate guide hole, small flow resistance.
4. Valve stem adopts compound packing with multiple seals.Make the seal reliable, low friction
5. Grease filling device is installed in the sealing parts, which can be sealed in case of valve leakage
Design Specification:
Design criteria:API 6D、ASME B16.34、GB/T 19762
Structure length:ASME B16.10、GB/T 12221
Connection standard:ASME B16.5、GB/T 9113、JB/T 79
Pressure test:API 6DS、GB/T 13927、GB/T 26480、JB/T 9092
Pressure and temperature levels:API 6D、GB/T 26480
Performance Parameters:
Body material:carbon steel、forget steel、aluminim bronze ect.
Nominai size:NPS 2"~60" DN50~DN1500
Pressure range:Class150~Class2500 PN10~PN420
Operating temperature:-15℃~ +120℃
