| Customization: | Available |
|---|---|
| Media: | Oil |
| Temperature: | Ordinary Temperature |
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Quick Details:
1. Type: PSB Gate Valves Z40 / Z61
2. Pressure Seal Bonnet (PSB), Flexible Wedge Design
3. Size Range: 2" to 12"
4. Pressure Ratings: ANSI 2500LB
5. Materials Available in: Alloy Steel A217 WC6, Other materials available
6. Various trim materials are available to suit different service conditions
7. Actuator: Manual, Handwheel, Gear Operated
8. Special Requirement: Nace Mr 0175
Application:
Oil and Gas, Petrochemical, Power, Energy Industry etc.
Standards
Design and Manufacture: Cast steel gate valve to API 600 or API 6D;
Inspection and Test: API 598, API 600 or API 6D.
End flange dimension: ASME B16.5 (for NPS≤24)
BW end dimension: ASME B16.25.
Face to face and end to end: ASME B16.10.
Pressure-temperature ratings: ASME B16.34.
Features:
1. Bonnet Gasket Style
Pressurized seal design is used for Class 2500 gate valve.
2. Packing Seal
As usual, flexible graphite is used for packing material. PTFE or combined packing material can be also used if being requosted by the customer.
3. Body and Bonnet Connection
Class 2500 gate valves usually adopt pressure seal bonnet design
4. Seat
For carbon steel gate valve, the seat is usually forged steel. The seat sealing surface is overlaying welded with hard alloy specified by the customer. For Stainless steel gate valve, the seat is integral with body, or it can be machined directly after hard alloy welded.
5. Disc Design
NPS≥2 Gate valves are flexible wedge gate.
6. Backseat Design
All gate valves have backseat design. In most cases,the carbon steel gate valve is fitted with a renewable back seat. For stainless steel gate valve, the back seat is machined directly in the bonnet or be machined after welding.
7. Stem Design
The stem is integral forged design. The minimum diameter of the stem shall be as per the standard requirement.
8 .Stem Nut
Usually, the stem nut is made of ASTM A439 D2. It is also can be made of copper alloy or other materials if being requested by the customer.
9. Operation
Hand wheel or bevel gear box is usually used for gate valve operation.
Description:
1. Pressure Seal Bonnet Cast Steel Gate Valve Parts and Material List for Class 2500LB:
| Parts No. | Parts Name | Materials | |
| WCB/Trim 5 | WC6/Trim 5 | ||
| 1 | Body | ASTM A216 WCB | ASTM A217 WC6 |
| 2 | Yoke | WCB | WC6 |
| 3 | Gate | ASTM A216 WCB +STL | ASTM A217 WC6 + STL |
| 4 | Stem | ASTM A182 F6a | ASTM A182 F6a |
| 5 | Seat Ring | A105 + STL | A182-F11 + STL |
| 6 | Bonnet | ASTM A216 WCB | ASTM A217 WC6 |
| 7 | Gasket | 304 + Graphite | |
| 8 | Adapter Ring | Carbon Steel | Alloy Steel |
| 9 | Retainer | Carbon Steel | Alloy Steel |
| 10 | Yoke Cap | Carbon Steel | Alloy Steel |
| 11 | Bonnet Stud | A193 B7 | A193 B16 |
| 12 | Bonnet Stud Nut | A194 2H | A194 7 |
| 13 | Packing | Graphite | |
| 14 | Gland | ASTM A182F6a | ASTM A182F6a |
| 15 | Gland Flange | ASTM A216 WCB | ASTM A217 WC6 |
| 16 | Eyebolt Pin | ASTM A36 | ASTM A36 |
| 17 | Eyebolt | ASTMA193 B7 | ASTM A193 B7 |
| 18 | Eyebolt Nut | ASTM A194 2H | ASTM A194 2H |
| 19 | Nipple | Carbon steel | Carbon steel |
| 20 | Stem nut | ASTM A439 D2 | ASTM A439 D2 |
| 21 | Yoke Sleeve Nut | Carbon steel | Carbon steel |
| 22 | Hand Wheel | Ductile Iron | Ductile Iron |
| 23 | Hand Wheel Nut | Carbon steel | Carbon steel |
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