Standards
1.Design and manufacture: API 602/ASME 16.34/BS 5352
2.Socket weld ends:ASME B16.11
3.Butt weld ends: ASME B16.25
4.Threaded end:ASME B1.20.1
5.Inspection and test: API 598

Features
1.Size range:1/4 “to 2″
2.Pressure rating:class150–2500
3.Carbon Steel: A105, LF2
Stainless Steel: F304, F304L, F316, F316L
Duplex: F51, F55
Alloy: F1, F5, F5A, F9, F11, F22
4.Welded bonnet
5.spring loaded to ensure that even in the low-pressure sealing performance when the same good