Products
Shuangda Valve CO.,LTD (hereafter called SDV)
Forged Steel Check Valve
PRODUCT RANGE
Sizes NPS 1/2 to NPS 2
Class 800 to Class 2500
DESIGN FEATURES
Swing Type or Lift (Piston) Type
SW, NPT, or BW connections
Bolted cover, Welded Cover or Pressure seal cover
DESIGN STANDARD
Design & manufacture according to API 602, ASME B16.34
End flanges according to ASME B16.11 (SW), ASME B1.20.1 (NPT)，ASME B16.25 (BW)
Test & inspection according to API 598
Also available per NACE MR-0175, NACE MR-0103
