black-painted forged steel gate valve

The forged steel gate valve is designed for high-pressure and high-temperature pipeline systems. It provides bi-directional tight shut-off with low flow resistance. The forged body ensures higher strength and better impact resistance compared with cast valves. The surface is finished in matte black industrial coating for corrosion protection and a clean industrial appearance.

Typical applications include oil & gas, petrochemical, power plants, steam systems, refining, and high-pressure utility lines.

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Product Details

Forged Steel Gate Valve

Product Type: Forged Steel Gate Valve

Series: Forged Steel Valve Series

Operation: Handwheel / Gearbox / Electric actuator (optional)

Structure: Rising stem, OS&Y, bolted bonnet / welded bonnet (optional)

1. General Description

Typical applications include oil & gas, petrochemical, power plants, steam systems, refining, and high-pressure utility lines.

2. Size & Pressure Range

Parameter	Range
DN (Metric)	DN15 – DN50 (can extend to DN300 on request)
NPS (Inch)	1/2" – 2" (up to 12" on request)
Pressure Rating	PN16 – PN160 / Class 150 – Class 2500
Bore Type	Full bore / Reduced bore
Connection	Flanged RF / RTJ, SW, BW, NPT

3. Design Standards

Item	Standard
Design & Manufacture	API 602, BS 5352, ASME B16.34
Face to Face	ASME B16.10
Flange Ends	ASME B16.5 / ASME B16.47
Socket Weld Ends	ASME B16.11
Butt Weld Ends	ASME B16.25
Threaded Ends	ASME B1.20.1 (NPT)
Inspection & Test	API 598 / JB/T 9092

4. Working Conditions

Media	Temperature Range
Water, oil, steam	-29°C to 425°C (Carbon Steel)
Steam / thermal oil	up to 550°C (Alloy Steel)
Nitric / acetic acid media	-40°C to 200°C (Stainless Steel)

5. Material Specification

No.	Component	Carbon Steel	Alloy Steel	Stainless Steel
1	Body / Bonnet	A105 / WCB	F11 / F22	F304 / F316
2	Wedge / Gate	A105 + hardfacing	F11 + STL	CF8 / CF8M
3	Seat Ring	13Cr / STL	13Cr / STL	SS304 / SS316
4	Stem	A182 F6a	F304	F304 / F316
5	Gasket	SS + flexible graphite	SS + graphite	SS + PTFE
6	Bolt / Nut	A193 B7 / A194 2H	B16 / 2H	B8 / 8M
7	Packing	Flexible graphite	Flexible graphite	PTFE / graphite
8	Handwheel	Cast steel / malleable iron	Same	Same

6. Main Dimensions (Class 800, Reduced Bore, Socket Weld, mm)

DN	NPS	L	d	H (open)	Handwheel Ø	Approx. Weight
15	1/2"	79	7	166	100	2.0 kg
20	3/4"	79	7	166	100	2.1 kg
25	1"	79	10	169	100	2.3 kg
32	1-1/4"	92	13.6	193	125	4.0 kg
40	1-1/2"	111	18	230	160	5.9 kg
50	2"	120	24	246	160	6.9 kg

Dimensions above are typical values for Class 800 forged steel gate valves. Final dimensions subject to flange type, bore type and customer requirements.