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Bolt Bonnet Gate Valve

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1. Both design and manufacture are carried out strictly following GB/T 12234, API600 and API602. The products feature a reasonable structure, reliable seal, good performance and nice modeling.

2. Co hard alloy welded sealing surface, which is wearing resistant, erosion proof, abrasion proof and long-lived.

3. The surface and the adjusting media of the valve shaft are nitrogenized so that it is erosion and abrasion resistant.

4. PN≥15.0MPa (Class 900), the middle cavity usea a self-tightening sealing structure to have the sealing performance reiinforced along with the pressure risee so as to ensure the sealing performance.

5. There is no backward sealing structure in the valve, so the sealing id reliable.

6. The material of the filling and the flange size can be chosen and matched according to the applications and requirements of the use's. That can satisfies all kinds of working requirements.

Structural formation Bolt-jointed bonnet outside stem yoke structure
Driving manner Hand-operated, Gear-operated and Electric-driving
Design standard GB/T 12234
Face to face GB/T 12221
Flanged ends GB/T 9113, JB/T 79, HG20592
Test & inspection GB/T 13927, JB/T 9092
Gate valve
No. Part name Material
1 Body WCB, WC1, WC6, WC9, C5, CF8, CF8M, CF8C, CF3, CF3M
2 Gate disc WCB, WC1, WC6, WC9, C5, CF8, CF8M, CF8C, CF3, CF3M
3 Seat A105, 304, 1Cr5Mo, 12Cr1MoV
4 Stem 1Cr13, 2Cr13, 12Cr18Ni9, 06Cr18Ni12Mo2Ti, 20Cr1Mo1V, 25Cr2MoV
5 Stud 35CrMoA, 06Cr19Ni10, 06Cr17Ni12Mo2, 25Cr2MoV
6 Six angle nuts 45, 35CrMoA, 25Cr2MoV, 06Cr19Ni10, 0Cr17Ni12Mo2
7 Gasket Graphite & stainless steel
8 Back seat 2Cr13, 20Cr13, 12Cr18Ni9, 06Cr18Ni12Mo2Ti, 20Cr1Mo1V, 25Cr2MoV
9 Bonnet WCB, WC1, WC6, WC9, C5, CF8, CF8M, CF8C, CF3, CF3M
10 Packing Graphite
11 Packing press-sleeve 1Cr13, 2Cr13, 12Cr18Ni9, 06Cr18Ni12Mo2Ti
12 Packing gland CF8, CF8M, CF8C, CF3, CF3M
13 Valve stem nut Copper alloy
14 Handwheel KTH350-10, QT400-15

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