2″-1500LB Closed Die 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

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Description

API 602 Forged Steel Gate Valve Technical Data Sheet

General Information

Item	仕様
バルブタイプ	Forged Steel Gate Valve
Design Standard	API 602 / ASME B16.34
公称サイズ	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)
手術	Handwheel

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

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.

Main Component Materials

Item	Part Name	材料	Standard/Remark
1	体	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	幹	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)

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.
突合せ溶接（BW）: Bevel preparation per ASME B16.25.

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.

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.

保証:

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