High Temperature and High Pressure Electric Power Station Gate Valve
Products Design Features
Flanged ends cast steel gate valve are used to cut or connect the pipe media under nominal pressure between PN1.6-42.0MPa(Cass150~2500)working temperatures ≤ 600in oil industry chemical industry fossil-fired power plants.
The main structure features include:
1.Both design and manufacture are carried out strictly following GB/T12234AP600and AP1602. 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(Class900), the middle cavity usea 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 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 the requirements of the use's. That can satisfies all kinds of working requirements.
Main Parameter Of The Products
| Serial models | (Hs、Ps)Z11H(Hs、Ps)Z11Y、(Ps)Z41H、(Ps)Z41Y、(Ps)Z441H、(Ps)Z441Y(Ps)Z541H(Ps)Z541Y(Ps)Z941H(Ps)Z941Y | |||
| Pressure grade range | PN1.6-42.0MPa(Class150-2500) | |||
| Drift diameter range | DN15-1000mm(NPS1-40) | |||
| Driving manner | Hand wheel driving | Gear driving and electric driving | ||
| Scope of application | Class150-300(PN1.6-4.0) | Class400-600(PN6.4-10.0) | Class900-2500(PN15.0-42.0) | NPS2-40(DN50-1000mm) |
| NPS1/2-24(DN15-600mm) | NPS1/2-12(DN15~300mm) | NPS1/2-10(DN15~250mm) | ||
Products Performance Specification
Technical Specification
| Structural formation | Pressure sealed bonnet outside stem yoke structure |
| Driving manner | Hand-operated,Gear-operated and Electric-driving |
| Design standard | API600 |
| Face to face | ASME B16.10 |
| Flanged ends | ASME B16.15 |
| Test & inspection | API6D API598 API600 |
Note: The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.
Major Parts Material Form
| No. | Part name | Material |
| 1 | Body | ASTMA216-WCB
ASTMA217-WC1WC6WC9C5 ASTMA351-CF8CF8MCF8CCF3CF3M |
| 2 | Seat | ASTM A105
ASTMA182-F11、F22 F5. F9A |
| 3 | Gate disc | STM A216-WCB
ASTM A217-WC1.WC6、WC9.C5 ASTMA351-CF8CF8M、CF8CCF3CF3M |
| 4 | Stem | ASTM A182 F6a、ASTM A182 F22 F11
ASTM A182-F304、F316、F321、F304LF316L |
| 5 | Bonnet | ASTMA216-WCB
ASTMA217-WC1WC6WC9C5 ASTMA351-CF8CF8MCF8CCF3CF3M |
| 6 | Seal ring
|
Graphite |
| 7 | Tetracycling ring | ASTM A182 F6aASTMA182F22F11 |
| 8 | Stud | ASTMA193-B7A193-B8A193-B8M.A193-816 |
| 9 | Six angle nuts | ASTMA194-2H A194-8A194-8M，A194-7 |
| 10 | Packing | Graphite |
| 11 | Yoke | ASTMA216-WCB
ASTMA351-CF8CF8MCF8CCF3CF3M |
| 12 | Driving device | Electric driving |
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