Cast Steel Wedge Gate Valve with Bypass Valve HF Seal Api / Din Standards for Steam

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),API 605 or ASME B16.47 series A,MSS SP-44 (for NPS > 24).

BW end dimension: ASME B16.25.

Socket-weld dimension: ASME B16.11.

Face to face and end to end: ASME B16.10.

Pressure-temperature ratings: ASME B16.34.

Quick Details:

1. Type: Bypass Gate Valves
2. OS&Y, Bolted Bonnet, Solid or Flexible Wedge Design
3. Size Range: 2" - 36", Dn50 to Dn900
4. Pressure Ratings: Ansi Class 150LB - 2500LB, Din Pn10 - Pn64;
5. Materials Available in: Cast Steel GS-C25, 1.4308, 1.4408, WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12 or Equivalent;
6. Various trim materials are available to suit different service conditions
7. Actuator: Manual, Handwheel
8. NACE MR 0175 on request

Features:

1. Bonnet Gasket Style

Stainless steel + flexible graphite combined gasket;

Stainless steel + flexible graphite wounded gasket;

Ring joint gasket;

Pressurized seal design.

2. Packing Seal

Flexible graphite is used for packing material. PTFE or combined packing material can be also used.

3. Body and Bonnet Connection

Bolted Bonnet design. (B.B)

4. Operation

Hand wheel or bevel gear box is usually used for gate valve operation, electric actuator also can be used for gate valve operation if being requested by the customers.

5. Disc Design
NPS≥2 Gate valves are flexible wedge gate, NPS<2 Gate valves are solid wedge gate.

6. Backseat Design

All gate valves have backseat design.

7. Stem Design

The stem is integral forged design.

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.

11.Parts and Material List