2"-1500LB Closed Die Forged Steel Gate Valve

2″-1500LB Closed Die Forged Steel Gate Valve

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Description

API 602 Forged Steel Gate Valve Technical Data Sheet

1. General Information

Item Specification
Valve Type Forged Steel Gate Valve
Design Standard API 602 / ASME B16.34
Nominal Size 2 inch (DN50)
Pressure Class Class 1500 LB (PN250)
Bonnet Type OS&Y (Outside Screw and Yoke)
Connection Type Welding Ends (Socket Weld SW / Butt Weld BW)
Operation Handwheel

2. Applicable Standards

Item Standard Code
Design & Manufacturing API 602, ASME B16.34
End Connections ASME B16.11 (Socket Weld), ASME B16.25 (Butt Weld)
Face-to-Face / End-to-End ASME B16.10
Test & Inspection API 598
Pressure-Temperature Rating ASME B16.34

3. Main Design Features

  • Body & Bonnet: Die-forged construction, dense structure, high strength.

  • Stem Design: Backseat feature allows packing replacement under pressure when valve is fully open.

  • Wedge: Solid wedge, fully guided design to minimize wear.

  • Bonnet Type: Bolted bonnet or welded bonnet (as required).

  • Seat Design: Metal-to-metal seating (typically 13Cr/STL), renewable or welded-in seat rings.

  • Gasket: Flexible graphite or spiral wound gasket with stainless steel winding.

4. Main Component Materials

Item Part Name Material Standard/Remark
1 Body ASTM A105N Forged steel, suitable for NACE MR0175
2 Bonnet ASTM A105N Forged steel
3 Wedge ASTM A276 410 / 304+STL 13Cr or stainless steel with hardfacing
4 Seat Ring A105N + STL / A276 420 Integral hardfacing or renewable
5 Stem ASTM A182 F6a (13Cr) / A182 F304 Stainless steel
6 Gasket 304 + Flexible Graphite Spiral wound or serrated
7 Packing Flexible Graphite Pre-compressed rings, leak-proof
8 Bonnet Bolt ASTM A193 Gr.B7 Alloy steel
9 Bonnet Nut ASTM A194 Gr.2H Heavy hex nut
10 Gland Flange ASTM A105 Carbon steel
11 Handwheel Malleable Cast Iron (ASTM A197)

5. Technical Parameters & Dimensions

5.1 Pressure-Temperature Ratings

  • Material Group: Group 1.1 (Carbon Steel)

  • Temperature Range: -29°C ~ 425°C

  • Applicable Media: Water, oil, gas, steam, etc.

5.2 Dimensions (Reference Values)

Dimension Value Remark
End-to-End Length (L) 368 mm (14.5 inch) For both SW and BW ends, per ASME B16.10
Height (H-OPEN) Approx. 508 mm Fully open position
Handwheel Diameter (W) Approx. 300 mm
Weight Approx. 40 kg Reference only, may vary by manufacturer

5.3 End Connection Details

  • Socket Weld (SW): Bore diameter and depth per ASME B16.11.

  • Butt Weld (BW): Bevel preparation per ASME B16.25.

6. Test & Inspection (API 598)

  • Shell Test Pressure: 23.4 MPa (hydrostatic)

  • High-Pressure Seat Test: 17.0 MPa (hydrostatic or pneumatic)

  • Low-Pressure Seat Test: 0.5 – 0.7 MPa (air)

  • Test Duration & Procedure: Strictly in accordance with API 598.

7. Marking & Supply

  • Valve Marking: Per MSS SP-25, nameplate to include material, pressure, heat number, etc.

  • Cleaning & Protection: Valves internally and externally cleaned, ends covered with protectors, flange faces coated with rust preventive (if applicable).

  • Documentation: Material certificates, pressure test reports, declaration of conformity provided with shipment.

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