Bolted Bonnet Gate Valve

These high quality bolted bonnet gate valves are usually installed in a large variety of services in the oil and gas industry, chemical and petrochemical industry, in onshore and offshore drilling/refining, and in the power industry. The bolted bonnet gate valves are successfully installed worldwide on applications requiring tight shutoff.

The bolted-bonnet joint of the gate valve is the most popular joint and it is used on the majority of gate valves in the industrial use today.

Unlike threaded and union bonnet valves, the bolted-bonnet connection requires a gasket to seal the joint between the body and bonnet. At lower pressure valves, sheet gasket materials are used and at higher pressure metallic gaskets are used to seal the bolted bonnet gate valve.


Bonnet Gate Valve

Bonnet Gate Valve

      Application Bonnet Gate Valves are isolating valves designed for full closing or opening of working media flow. The bonnet gate valve has a rotating non-rising stem  with its thread inside the valve chamber. The body and wedge have brass or stainless steel sealing rings pressed into them. Stem is sealed with gland packing into the bonnet.   Working medium water non-corrosive liquids steam air gases of group 1 and 2 petroleum..

Bonnet Gate Valve for drinking water

Bonnet Gate Valve for drinking water

        Application Bonnet Gate Valve for drinking water are isolating valves designed for full closing or opening of working media flow. The bonnet gate valve has a rotating non-rising stem  with its thread inside the valve chamber. Flexible sealing surfaces on wedge are vulcanized with soft rubber. Stem is sealed with O-ring. Installation: horizontal only Working medium water non-corrosive liquids steam air gases ..

Cast Steel Flanged Gate Valve

Cast Steel Flanged Gate Valve

Cast Steel Flanged Gate Valve Cast Steel Flanged Gate Valve Suitable to fit between PN16, ANSI 150 or ANSI 300 flanges Designed for industrial applications Cast Steel body with bolted bonnet End connection: Flanged PN16, ANSI 150 or ANSI 300 Sizes 2" to 8" and 2" to 10" Temperature range: -29°C to 425°C. Pressure rating: PN20, Class 150 or Class 300 Our Cast Steel Flanged Gate Valve is suitable to fit between PN6, PN10/16 or ANSI 150 flanges (subj..

Cast Steel Gate Valve API 600 ANSI Class 150

Cast Steel Gate Valve API 600 ANSI Class 150

Cast Steel Gate Valve API 600 ANSI Class 150 Heavy Duty Gate Valve Cast Steel Flanged ANSI 150 Sizes: 2" to 12" API 600 This heavy duty flanged Class 150 gate valve with full port provides durability across a broad variety of manufacturing apps, boiler facilities and rough surroundings.  The offered cast steel gate valve API 600 ANSI class 150 has a Handwheel and is flanged ANSI 150. It provides minimum leakage and full service life. Designed for API 600..

Showing 1 to 4 of 4 (1 Pages)
Frequently Asked Questions (FAQ)

What are the advantages of using a bolted bonnet gate valve in industrial applications?

The primary advantages of using a bolted bonnet gate valve include enhanced sealing capabilities, ease of maintenance, and structural integrity. The bolted bonnet design allows for a secure connection between the body and bonnet, minimizing the risk of leaks. Additionally, maintenance is simplified as the gasket can be easily replaced without the need for extensive disassembly. This makes them suitable for high-pressure and high-temperature applications, particularly in the oil and gas industry.

How does the sealing mechanism of a bolted bonnet gate valve work?

The sealing mechanism of a bolted bonnet gate valve relies on a gasket that sits between the valve body and the bonnet. When the bolts are tightened, the gasket is compressed, creating a leak-proof seal. This is different from threaded or union bonnet valves that may not offer the same level of sealing efficiency. The bolted design ensures that the connection can withstand various pressures and temperatures, making it ideal for critical applications.

In what applications are bolted bonnet gate valves typically used?

Bolted bonnet gate valves are commonly used in a wide range of industries, including the oil and gas, chemical and petrochemical sectors, and power generation. They are particularly effective in applications requiring tight shutoff, such as in onshore and offshore drilling and refining processes. For example, the Bonnet Gate Valve is a versatile option that can be utilized across various liquid and gas services.