Gate Valve

Description

Special requirement code: Body, bonnet*-jointed structure (default) Hs –body, bonnet welded structure Ps—pressure sealed structure D—low temperature valve B—bellows valve E—body extended—end valve
Valve type code: Z—Gate valve
Driving manner code: 4—spur gear transmission 5—bevel gear transmission 6—Air driving 6s—Take pneumatic type 7—hydraulic driving 9—electric driving(Hand wheel driving omitted) 9B—explosion electric driving
Connection type code: *-Interior whorl 2—other whorl 4—flange 6— welding *-Socked welding
Design feature code: 1— single-disc 2— double disc
Structure manner code: W-non diversion hole type(diversion hole type omitted) P-light-duty
Sealing formation code: Y—hard alloy H—alloy steel
Pressure grade code: pound grade in practical number
Body material code:
(1) Cast the valve body:
C-WCB I-WC6、ZG1Cr5Mo V—WC9 ZG*0CrMoV P—CF8 ZG1Cr*8Ni9Ti R—CF8M ZG1Cr*8Ni*2Mo2Ti S-CF3 L—CF3M F—LCB N—LC3
(2) Forge the valve body: C—A**5, E—LF2, A—F*1, V*-F*2, P*-F**4 R—F**6, S—F**4L L—F**6L
Product design features
Flange ends cast steel gate valve are used to cut or connect the pipe media under nominal pressure between class*******0, working temperature≤**0°C, in oil industry, chemical industry, fossil-field power plants.
The main structure features include:
1. Both design and manufacture are carry out strictly fellow API**0 and API**2. The products feature a reasonable structure, reliable seal, good performance and nice modeling.
2. Co hard alloy welded sealing surface, which is wearing resistance, 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 resistance.
4. Class≥**0LB, the media cavity uses a self-tightening sealing structure to have the sealing performance reinforced along with the pressure rise so as to ensure the sealing performance.
5. There is backward sealing structure in the valve, so the sealing is reliable.
6. The material of the filling and the flange size can be chosen and the matched according to the applications and the requirement of the wier’s. That can satisfy all kinds of working requirements.