Threaded/Welded Forged Steel Gate Valve
Products Design Features
Stronger, Leakproof Body-bonnet Joint, Fully Encased Spiral Wound Gasket
The design of the gasketed joint is critical. Its compression is better controlled in a fully enclosed cavity. Also, the possibility of unwinding of the SS spiral metal is eliminated.
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.
Applicable Standards:
BASIC DESIGN: API 602 Face to Face and End to End
DIMENSIONS OF VALVES: ANSI B16.10
FLANGED END: ANSI B16.5
VALVE TEST AND INSPECTION: API598
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 | Bolt-jointed bonnet outside stem yoke structure |
| Driving manner | Hand-operated |
| Design standard | API602.BS5352 |
| Thread ends | ASME B1.20.1 |
| Socket welded ends | ASME B16.11 |
| Test & inspection | API598 BS6755 |
Major Parts Material Form
| No. | Part name | Material |
| 1 | Body | ASTM A105
ASTMA182-F11F22F5F9 ASTMA182-F304F316F321F304L，F316L |
| 2 | Seat | A8TM A105
ASTMA182-F11F22.F5.F9 ASTM A182-F304、F316、F321F304LF316L |
| 3 | Wedge | ASTM A105
ASTMA182-F11F22.F5F9 ASTMA182-F304F316F321F304LF316L |
| 4 | Stem | ASTMA182 F6a、ASTMA182F22.F11
ASTMA182-F304、F316 F321F304LF316L |
| 5 | Bonnet | ASTM A105
ASTMA182-F11F22F5F9 ASTMA182-F304，F316，F321、F304L，F316L |
| 6 | Packing | Graphite |
| 7 | Packing press-sleeve | ASTMA182 F6aASTMA182F22F11
ASTMA182-F304，F316F321F304LF316L |
| 8 | Packing gland | ASTMA216-WCBASTMA217-WC6WCC5C12 ASTMA351-CF8CFBMCF8CCF3CF3M |
| 9 | Valve stem nut | Copper alloy |
| 10 | Hand wheel | ASTMA47-32510 ASTMA53660-40-18 |
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