Design Features

1.Swing type disc design,full bore for line pigging 
2.Optional soft seal and metal seal.The sealing surfaces of valve seat and disc are build-up welded with hard alloy to improve the erosion resistance and extend the life of valve.
3.Optional welded and thread seat
4.Optional outside weight lever to prevent the disc from bumping the valve seat, damaging the valve or causing pipeline vibration due to fast closing, it can be manually operated to fix the opening position , so as to achieve the pigging objective.

Product Range

Size/Rating: NPS 2″～48"/Class 150Lb～1500Lb
Structure: external hinge pin
Trim: Soft Seat, Metal Seat
Operation: Lever, Gear Box

Design Standards

Basic Design: API 6D, ASME B16.34
End Connection: ASME B16.5, ASME B16.47, MSS SP-44
Test & Inspection: API 598