High Pressure Pressure Sealing Bonnet Gate Valve

Product Description

High Pressure Pressure sealing bonnet Gate Valve 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