Structural advantages and characteristics
1、The product designed and manufactured according to national standard GB 12235,reasonable structure,reliable sealing,excellent performance and beautiful shape.
2、Flap valve,the valve seat sealing surface of iron based alloy or stellite (stellite)made of cobalt-based alloy welding,wear-resistant,high temperature,corrosion,anti-abrasion performance,long life.
3、Stem quenched and the nitrogen treatment,with good resistance to corrosion and scratch resistance.
4、Can be used with a variety of standard pipe flanges and flange sealing surface types to meet various project needs and userrequirements.
5、Body material variety,packing,gasket can be based on actual working conditions or the user requests a reasonable option,can be applied with all kinds of pressure,temperature and medium conditions.
6、Sealed with screw connection seal back seat or body made of stainless steel welding,sealing and reliable replacement of fillingin non-stop convenient and efficient manner does not affect system operation.
Standards and norms
Design and Manufacture | Structure Length | Pressure. temperature rating |
Connecting flange | Test and Inspection |
GB 12235 | GB 12221 | GB 12224 | JB/T 79/82 GB 9113 HG 20592-20635 |
GB/T13927 GB/T26480 |
Main components material
Name | Material | ||||||||
Body/Bonnet | CF8 | CF3 | CF8M | CF3M | WCB | LCB | WC6 | WC9 | C5 |
Wedge | CF8 | CF3 | CF8M | CF3M | WCB | LCB | WC6 | WC9 | C5 |
Stem | F304 | F304L | F316 | F316L | 2CR13 | F304 | F304 | F304 | F304 |
Stem Nut | Aluminium Bronze | ||||||||
Packing | PTFE | Graphite | |||||||
Gasket | PTFE | Graphite | |||||||
Gland | CF8 | CF3 | CF8M | CF3M | WCB | LCB | WC6 | WC9 | C5 |
Bolt | 35CrMoA | ||||||||
Nut | Stainless Steel | 45、35CrMoA | |||||||
Handwheel | Stainless Steel Cast Steel |
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