Bolt Bonnet Steel Gate Valve

Designed for dependable on-off isolation in industrial piping systems, the Bolt Bonnet Steel Gate Valve provides a full-bore flow passage with minimal pressure loss when fully open. Its wedge-shaped gate moves vertically between the seats, creating a positive barrier to the process medium while keeping the flow path largely unobstructed during normal operation. The bolted bonnet construction provides a practical and serviceable pressure boundary for a wide range of process conditions.

The Bolt Bonnet Steel Gate Valve is suitable for oil & gas, petrochemical, refinery, chemical processing, power generation, water treatment, and general industrial services. Available in a variety of pressure classes, materials, trims, and end connections, it offers a versatile solution for pipeline isolation where low flow resistance and dependable shut-off are required.

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Technical Specifications

Product description:	Bolt bonnet steel gate valve
Model:	Z541Y Bolt bonnet steel gate valve
Nominal diameter:	NPS 2”～48”
Operating temperature:	-196℃~600℃
Operating pressure:	CLASS 150~ CLASS 2500
Material:	WCB、WCC、WC6、WC9、C5、C12、LCB、LCC、CF8、CF8M、CF3、CF3、CF3M、CN7M、CF8C
Design standard:	API 600、BS 1414
Structural length:	ASME B16.10、EN 558
Connecting end:	ASNE B16.5、ASME B16.47
Test standard:	API 598
Operation method:	Manual、Gear、Electric、Pneumatic、Hydraulic
Application fields:	For application in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, etc.

Features & Benefits

Heavy-duty isolation valve providing full-bore flow with minimal pressure loss.

Full-Bore Flow Passage

The gate retracts completely from the flow path when fully open, helping minimize pressure loss and turbulence.

Wedge Gate Design

The wedge configuration provides effective seating against the valve body and supports dependable isolation.

Bolted Bonnet Construction

A bolted body-to-bonnet connection provides a conventional, proven pressure-boundary arrangement and facilitates servicing.

Bidirectional Shut-Off

Suitable configurations allow isolation of the process medium from either flow direction.

Low Pressure Drop

The unobstructed passage is well suited to systems where maintaining pipeline flow efficiency is important.

Durable Stem & Trim

Stem, gate, and seating materials can be selected according to pressure, temperature, corrosion, and media requirements.

Multiple Trim Options

Available with different seat and trim combinations to accommodate a broad range of process services.

OS&Y Configuration Available

Rising-stem designs provide clear visual indication of valve position and facilitate maintenance access.

Manual or Automated Operation

Can be equipped with handwheels, gear operators, or actuators according to valve size and operating requirements.

Broad Industrial Application

Suitable for oil & gas pipelines, refineries, petrochemical plants, chemical processing, power stations, water systems, and general industrial services.

Application Scenario

Chemical Industry

Ball valves, butterfly valves, gate valves, globe valves, check valves, and control valves ensure safe fluid isolation, precise process control, and reliable operation in demanding chemical processing applications.

Oil Industry

Engineered for reliable isolation, flow regulation, and backflow prevention, our valve solutions support upstream, midstream, and downstream oil production and refining operations.

Natural Gas

Providing leak-tight sealing, dependable flow control, and safe pipeline operation for natural gas transmission, storage, LNG, and distribution systems.

Metallurgy

Built to withstand high temperatures, abrasive media, and harsh operating conditions in steelmaking, smelting, and metallurgical processing.

Power Generation

Ensuring reliable isolation, accurate flow control, and long-term performance in steam, boiler, turbine, and power plant systems.

Pharmaceutical

Delivering hygienic, precise, and contamination-free flow control for pharmaceutical manufacturing and clean process applications.

Steel Industry

Designed for high-temperature, high-pressure, and severe-service conditions in iron making, steelmaking, rolling mills, and auxiliary process systems.

New Energy

Supporting hydrogen, LNG, carbon capture, battery materials, and renewable energy projects with advanced valve solutions for safe and efficient process control.