Wafer check valve is applicable for various pipelines with nominal pressure of PN1.0 Mpa~42.0Mpa, Class 150LB~2500LB and nominal diameter of DN15~1200mm, NPS 1/2-48 and working temperature of -196~540 degree Celsius to be used for protecting from medium backflowing.
The different materials selection can apply to the medium involving water, steam, oils, nitric acid, acetid, strong oxidizing medium and urea etc.

Application Standards

1. Design and manufacture conform to: API602. BS5352. MSS SP-118;

2. Connection ends conform to:

1) Socket welded dimension conform to ANSI B16.11; JB/T1751
2) Screw ends dimension conform to ANSI B1.20.1; JB/T7306
3) Butt-welded conform to ANSI B16.25; JB/T12224
4) Flanged ends conform to ANSI B16.5; JB79

3. Test and inspection conform to: API598; GB/T 13927; JB/T 9092

4. Structure features:
Bolted bonnet, outside screw and yoke(OS&Y)
Welded bonnet, outside screw and yoke(OS&Y)

5. Materials conform to ANSI/ASTM

6. Main marerials:
A105, LF2, F5, F11, F22, 304(L), 316(L), F347, F321, F51, Monel, Alloy, Hastelloy etc

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Naibang will be one of your best parters in China.