Self Sealing Integral Free Forging Power Station Gate Valve High-Temperature and High-Pressure Large-Diameter Forged Gate Valve

NWV’s self-sealing integral free forging power station gate valve is designed for high-temperature and high-pressure conditions in power, petrochemical, and metallurgy industries.

Characteristics

Port Size:: NPS1/2″~NPS72″(DN15mm~DN1800mm)

Application:: Power plants, petrochemicals, refining

Temperature of media:: High/Low/Medium Temperature

Media:: Water, Oil, Acid, Gas

Execution standards:: API, JIS, DIN, BS, ASTM, ANSI, GB, JB, NB, HG

Pressure range:: Class150~Class2500Lb (PN16-PN420)

Material scope:: Castings WCB, LCB, LCC, WB36, WC6, C5, WC9, C12A, CF8, CF8M, 4A, 5A, 6A

Material scope:: Forgings A105, F91, F11, F22, F5a, F6, LF1, LC2, 12Cr1MoV, F36, F304, F316

Product Overview

Self-Sealing Integral Free Forging Power Station Gate Valve

I. Product Overview: Reliable Fluid Control for Extreme Conditions

NWV’s self-sealing integral free forging power station gate valve is designed for high-temperature and high-pressure conditions in power, petrochemical, and metallurgy industries. The valve body uses integral free forging with a forging ratio ≥5:1, combined with a pressure self-sealing structure that relies on medium pressure for dynamic sealing, eliminating leakage risks from traditional flange connections. Compliant with ASME B16.34 and API 600, it operates stably between -29℃~540℃ and Class 150~Class 2500, suitable for intercepting water, steam, oil, and natural gas. Core advantages lie in the high strength of forged bodies, reliability of self-sealing, and customized design for extreme conditions.

Specification

Execution standards	API, JIS, DIN, BS, ASTM, ANSI, GB, JB, NB, HG
Pressure range	Class150~Class2500Lb(PN16-PN420)
Size range	NPS1/2 “to NPS72” (DN15mm to DN1800mm)
Material scope: Forgings	A105, F91,F11,F22, F5a, F6, LF1,LC2,12Cr1MoV, F36, F304, F316, F321H
Material scope: Castings	WCB, LCB, LCC,WB36, WC6, C5, WC9, C12A, 20CrMOV, CF8, CF8M, 4A, 5A
Operate Type	Manual, electric,pneumatic, gear
Valve type	Power station valves, gate valves, globe valves, check valves
Application	power plants,petrochemicals,refining, natural gas, metallurgy
Connection type	Flange, welding, thread, FM, BW, SW
Customization	OEM/ODM/OSM/OBM

II. Key Attribute Parameters: Comprehensive Technical Specifications

Parameter Category	Technical Indicators
Nominal Diameter Range	NPS 1/2″~NPS 48″ (DN15~DN1200), covering full-size needs from instrument lines to main steam pipes
Pressure Class	Class 150, 300, 600, 900, 1500, 2500 (PN16~PN420), adaptable to different pressure systems
Execution Standards	Design: ASME B16.34, API 600, BS 1873; Face-to-Face: ANSI B16.10; Welding: ANSI B16.25
Material System	– Body/bonnet: A105, F22, F91, WC6, WC9, CF8M, etc.; – Sealing surface: Stellite alloy hardfacing (hardness ≥HRC58)
Operation Modes	Manual (with handwheel/gearbox), electric (explosion-proof optional), pneumatic, hydraulic, supporting remote control integration
Connection Types	Butt Weld (BW), Flanged (RF/RTJ), Threaded, compliant with ANSI B16.5 and other international standards
Temperature Range	Carbon steel ≤425℃, alloy steel ≤540℃, stainless steel ≤200℃, low-temperature steel (LCB) down to -196℃