Self-operated forged steel gate valve

Wedge gate valve is a high-performance valve widely used in petroleum, chemical, electric power, metallurgy, water supply and drainage and municipal engineering and other working conditions. The valve is suitable for water, steam, oil, gas and a variety of corrosive media, with excellent pressure resistance, high temperature resistance and sealing performance. The wedge gate valve adopts wedge gate design, which can realize two-way sealing, and the gate plate closely fits the valve seat when the valve is closed, ensuring no leakage. Product features include sturdy structure, flexible opening and closing, reliable sealing, small flow resistance, suitable for fully open or fully closed conditions. The wedge gate valve supports manual, electric and pneumatic drive methods to meet the needs of automation control. Its main function is to realize the cut-off and connection of pipeline media, to ensure the safe and stable operation of the system. With excellent durability and sealing performance, wedge gate valves have become an indispensable high-quality valve equipment in industrial processes and critical piping systems.

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products

Self-operated forged steel gate valve

Model: Z41Y

Subtitle：Ultra high pressure gate valve

The self-acting forged steel gate valve is a high performance automation solution designed for critical isolation tasks in the oil and gas, petrochemical and power generation industries. It combines the strength of forged steel construction with self-actuating operation to ensure reliable, energy-efficient performance in high-pressure, high-temperature environments. The valve is strictly for on/off service and is not suitable...

Tags:high pressure valve

Classification:Wedge Gate Valves, Forged Steel Gate Valves

Working conditions:metallurgical plant, chemical plant, power plants, petrochemical industry

Product Overview

Applicable working conditions

Oil and gas: wellhead isolation, pipeline shutdown and refinery applications.
Petrochemical: High pressure fluid control in chemical reactors and distillation units.
Power generation: steam isolation in turbines and boiler feedwater systems.
Ships: offshore platforms and ship piping systems.

Main characteristics

forged structure
Material Integrity: Forged A105, F22 or F316 steel is used to enhance grain structure and impact resistance.
Pressure Rating: ANSI Class 1500-2500 (PN260-PN420).
Temperature range: -20°F to 1100°F (-29°C to 593°C).

self-driven operation
Drive type: pneumatic, hydraulic or electric actuator.
Control signal: 4-20 mA, 3-15 psi, or 24-120 VDC.
Fail-Safe Option: Spring return for Fail-On (FO) or Fail-Close (FC).

Gate design
Wedge Type: Flexible or solid wedge to ensure zero leakage (ANSI Class VI).
Fire safety: API 607 certified with secondary metal-to-metal sealing.
Stem design: Open stem (OS&Y) or concealed stem (NRS) available.

Sealing and Handling
Seat material: Stellite alloy 6 overlay, 13% chromium stainless steel.
Stem packing: graphite or PTFE to ensure high temperature reliability.
Operation: Manual handwheel operation for emergency situations.

Comparison with ordinary gate valve

specificities	Self-operated gate valve	Manual Gate Valves
manipulate	Automatic remote control	Manual handwheel operation
response time	Seconds (pneumatic/hydraulic)	Minutes (manual required)
fail-safe	FO/FC Spring return	Fail-safe options
(manufacturing, production etc) costs	Higher initial investment	Lower upfront costs

Medium of use

petrochemical, vapor

working condition

metallurgical plant, chemical plant, power plants, petrochemical industry, high temperature and pressure, high temperature and pressure, High-temperature and high-pressure working conditions, High Temperature High Pressure Steam System

summarize

Self-acting forged steel gate valves offer unmatched reliability in high-pressure, high-temperature isolation applications. Its rugged forged construction and API 600 compliance make it the gold standard for critical systems in the oil and gas, power plant and chemical industries. Not suitable for flow regulation.

Product Parameters

Nominal diameter	DN15-DN50 (?"-2")
Nominal pressure	ANSI Class 1500-2500 (PN260-PN420)
Applicable temperature	-29°C to 593°C (-20°F to 1100°F)
Valve Material	ASTM A105 (Carbon Steel), F22 (Chrome-Moly), F316 (Stainless Steel)
Valve material	13% Cr, Stellite 6, or F6a
Stem Material	SS410, SS304, or Monel
connection method	Flange (ASME B16.5), Socket Weld (SW)
leakage rate	ANSI Class VI (standard)
Test Standards	Hydrostatic: API 598; Fire-Safe: API 607