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China Manufacturer for Spring Loaded Low Lift Type With Lever Safety Valve - Bolt Bonnet Gate Valve – Convista

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China Manufacturer for Spring Loaded Low Lift Type With Lever Safety Valve - Bolt Bonnet Gate Valve – Convista Detail:


Products design features

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.


Technical specification

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


Major parts material form

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

Product detail pictures:

China Manufacturer for Spring Loaded Low Lift Type With Lever Safety Valve - Bolt Bonnet Gate Valve – Convista detail pictures


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We have been also concentrating on enhancing the things management and QC method so that we could preserve terrific edge inside the fiercely-competitive enterprise for China Manufacturer for Spring Loaded Low Lift Type With Lever Safety Valve - Bolt Bonnet Gate Valve – Convista, The product will supply to all over the world, such as: Atlanta, Peru, Houston, Faced with the vitality of the global wave of economic integration, we've been confident with our high-quality items and sincerely service to all our customers and wish we can cooperate with you to create a brilliant future.
  • Factory equipment is advanced in the industry and the product is fine workmanship, moreover the price is very cheap, value for money!
    5 Stars By Kimberley from South Africa - 2018.11.04 10:32
    We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
    5 Stars By Antonia from Kuala Lumpur - 2017.08.21 14:13

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