Wastewater treatment plants are pivotal in maintaining the health of...
Read Article >Our gate valves commonly feature in industrial piping where flow isolation is essential in comparison to flow regulation. When a gate valve is fully open, flow is free without any resistance, allowing for minimal pressure drop.
Gate valves, integral components in industrial fluid control, play a crucial role in regulating the flow of liquids and gases in various systems. Characterised by their simplistic yet effective design, these valves operate by inserting a gate or wedge into the path of the flowing medium, allowing for a clear and unobstructed passageway when fully open and a secure seal when closed.
This binary functionality makes them ideal for applications where flow must be completely halted or allowed freely rather than for fine flow control or throttling. Gate valves come in various types, including cast steel, forged steel, cast iron, and bronze, each tailored to specific industrial needs and conditions.
Renowned for their durability and reliability, gate valves are indispensable in water and wastewater management, oil and gas, and fire protection systems, where precise flow isolation is paramount.
Contact one of our specialists about your specific needs. We aim to respond to your message on the same or next business day.
| Item | Details |
|---|---|
|
Body Material |
Bronze |
|
Body Coating |
- |
|
Trim |
Bronze |
|
Pressure Range |
PN21/PN23 |
|
Size Range |
DN15-DN80 |
|
Flange Connection |
|
|
End Connection |
BSPF |
|
Options |
|
| Item | Details |
|---|---|
|
Body Material |
Bronze |
|
Body Coating |
- |
|
Trim |
Bronze |
|
Pressure Range |
PN14/PN21 |
|
Size Range |
DN15-DN100 |
|
Flange Connection |
AS2129 Table E & F / ANSI /DIN |
|
End Connection |
- |
|
Options |
- |
| Item | Details |
|---|---|
|
Body Material |
Cast Iron |
|
Body Coating |
- |
|
Trim |
Bronze |
|
Pressure Range |
PN14 |
|
Size Range |
DN50-DN600 |
|
Flange Connection |
AS4087 / AS2129 Table E / ANSI |
|
End Connection |
- |
|
Options |
Open / Shut Indicator / Chain Wheels / Actuators: Bevel & Spur Gearbox / Epoxy Coating |
| Item | Details |
|---|---|
|
Body Material |
Cast Iron |
|
Body Coating |
- |
|
Trim |
Bronze |
|
Pressure Range |
PN14 |
|
Size Range |
DN50-DN600 |
|
Flange Connection |
AS4087 / AS2129 Table E / ANSI |
|
End Connection |
- |
|
Options |
Open / Shut Indicator / Chain Wheels / Actuators: Bevel & Spur Gearbox / Epoxy Coating |
| Item | Details |
|---|---|
|
Body Material |
Spheroidal Graphite Ductile Iron |
|
Body Coating |
- |
|
Trim |
Bronze |
|
Pressure Range |
PN21 |
|
Size Range |
DN50-DN1200 |
|
Flange Connection |
AS4087 / AS2129 Table E&F / ANSI |
|
End Connection |
- |
|
Options |
Open / Shut Indicator / Chain Wheels / Actuators: Bevel & Spur Gearbox / Epoxy Coating |
| Item | Details |
|---|---|
|
Body Material |
Spheroidal Graphite Ductile Iron |
|
Body Coating |
- |
|
Trim |
Bronze |
|
Pressure Range |
PN21 |
|
Size Range |
DN50-DN1200 |
|
Flange Connection |
AS4087 / AS2129 Table E&F / ANSI |
|
End Connection |
- |
|
Options |
Open / Shut Indicator / Chain Wheels / Actuators: Bevel & Spur Gearbox / Epoxy Coating |
| Item | Details |
|---|---|
|
Body Material |
Spheroidal Graphite Ductile Iron |
|
Body Coating |
- |
|
Trim |
Bronze |
|
Pressure Range |
PN21 |
|
Size Range |
DN100-DN150 |
|
Flange Connection |
- |
|
End Connection |
Roll Groove |
|
Options |
Epoxy Coating |
| Item | Details |
|---|---|
|
Body Material |
Spheroidal Graphite Ductile Iron |
|
Body Coating |
- |
|
Trim |
Bronze |
|
Pressure Range |
PN21 |
|
Size Range |
DN100-DN150 |
|
Flange Connection |
- |
|
End Connection |
Shoulder End |
|
Options |
Epoxy Coating |
| Item | Details |
|---|---|
|
Body Material |
Spheroidal Graphite Ductile Iron |
|
Body Coating |
- |
|
Trim |
EPDM (NBR on Request) |
|
Pressure Range |
PN16 (PN21 on Request) |
|
Size Range |
DN50-DN800 |
|
Flange Connection |
AS4087 / AS2129 Table E&F / ANSI |
|
End Connection |
- |
|
Options |
Actuator / Exension Shaft / Hardwheel / Stem Cap |
| Item | Details |
|---|---|
|
Body Material |
Spheroidal Graphite Ductile Iron |
|
Body Coating |
- |
|
Trim |
EPDM (NBR on Request) |
|
Pressure Range |
PN16 (PN21 on Request) |
|
Size Range |
DN50-DN800 |
|
Flange Connection |
AS4087 / AS2129 Table E&F / ANSI |
|
End Connection |
- |
|
Options |
Actuator / Exension Shaft / Hardwheel / Stem Cap |
Our commitment to industry to supply quality gate valves, we have made these technical sheets available. If you need further information or can’t find the sheet you need, please make a technical enquiry.
The John 59 and 59M models, our screwed-end bronze gate valves, are designed with an inside screw non-rising stem, making them versatile for both above and underground installations.
Their construction ensures resistance to dezincification across all sizes, enhancing their durability. Primarily used in fully open or closed positions, these valves are unsuited for throttling applications.
They are widely employed in various settings, including mechanical and domestic water systems, fire protection, hospital equipment, and general industrial services, all within their specified pressure limitations.
Featuring a non-rising stem and a screwed bonnet design, our flanged end bronze gate valves, namely the John 60 and 60M, are tailored for diverse applications.
These valves are highly effective in mechanical services, fire services, plumbing installations, and industrial and general water supply systems.
Their robust design ensures reliable performance and longevity, making them popular in various settings where precise flow control and dependable operation are critical.
Our SG cast iron gate valves, the John 600F with an inside screw and the 601F OS&Y, are constructed from high-quality spheroidal graphite iron.
They feature bronze seats, wedge rings, and a stainless steel spindle, ensuring strength and durability. These valves are predominantly used in water applications but also provide versatility for general service in industries dealing with oil, gas, and other fluids.
Their robust build and adaptable design make them suitable for multiple industrial applications, offering reliable performance under different service conditions.
At the core of our gate valve range lies a commitment to excellence in design and engineering, a hallmark of our dedication to quality and innovation. Our gate valves are the product of meticulous design processes integrating advanced engineering principles with practical industry insights.
The engineering prowess behind our gate valves is evident in their precise fluid control capabilities. We employ quality materials and cutting-edge fabrication techniques to create valves that offer robustness, longevity, and adaptability across various mediums – from water and gas to oil and chemicals. Each component of our gate valves is optimised for efficiency and durability, from the resilient seals to the robust body construction.
Furthermore, our design process incorporates extensive testing and refinement phases, ensuring every gate valve performs reliably under diverse and challenging operational conditions. This meticulous attention to detail guarantees that our valves deliver optimal functionality, safety, and longevity, reducing the need for frequent maintenance and replacements.
We place a strong emphasis on ergonomic and user-friendly design. This means that our gate valves are effective in their function and easy to install and operate, enhancing the overall efficiency of the systems they integrate with.
The operation mechanism of gate valves is designed for mechanical efficiency, defined by its simplicity and effectiveness. Central to its function is a gate or wedge, which moves perpendicularly to the fluid flow, thereby controlling the passage of the medium. This gate is manipulated by a stem connected to an actuator—typically a handwheel or a motor—translating rotational motion into the gate’s vertical movement.
Operators use a handwheel for direct control in manual valves, while automated valves in larger or remote systems employ electric, pneumatic, or hydraulic motors for remote operation. The seals and seats are essential to the valve’s functionality and are engineered for tight seal and leak prevention. When open, the gate valve allows an unobstructed flow, minimising pressure loss, and when closed, it provides a secure seal for effective flow isolation.
This versatility, coupled with the valve’s reliable isolation capabilities, makes it an ideal choice for various industrial and domestic applications, handling mixed media under different pressures and temperatures.
One of the benefits of gate valves are the many options available. From functionality, materials, coatings and connections. Talk to one of our experts about your specific needs and we will find a solution.
Gate valves are widely used across various industries due to their efficiency, reliability, and versatility in controlling the flow of liquids, gases, and slurries. Here are some of the key industry uses of gate valves:
Employed in pipelines, refineries, and processing plants for controlling the flow of oil, natural gas, and other petrochemicals.
Used for handling a wide range of chemicals, acids, bases, and solvents, requiring robust materials to withstand corrosive substances.
Used in water treatment plants, distribution systems, and sewage systems for isolating sections and controlling water flow.
Employed in processing plants for controlling the flow of various liquids and ingredients, often requiring sanitary materials and design.
Used in the manufacturing and processing of pharmaceutical products, where precision and cleanliness are paramount.
Integral in controlling ballast, bilge, and firefighting systems on ships and in dockyard piping systems.
In mining operations, gate valves control the flow of slurries and other abrasive materials, requiring heavy-duty construction.
In heating, ventilation, and air conditioning systems, gate valves regulate the flow of heating or cooling medium, contributing to efficient temperature control.
Utilised in irrigation systems for controlling water distribution to agricultural fields.
Integral in controlling ballast, bilge, and firefighting systems on ships and in dockyard piping systems.
Utilised in power plants, especially in hydroelectric and thermal power stations, for controlling water, steam, and other fluids.
sed in fire sprinkler systems and other fire protection setups for their ability to fully open or close the water supply.
Wastewater treatment plants are pivotal in maintaining the health of...
Read Article >
Valves of all sorts are expected to see a significant...
Read Article >
Gate valve operates with a circular shaped gate that moves...
Read Article >
Their vertical motion allows for convenient operation by personnel, but...
Read Article >If would like to know more, please get in touch and we’ll be happy to answer your questions.
A gate valve is used to control the flow of liquid, gas, or slurry in a pipeline. It is ideal for on/off control of the flow, rather than for flow regulation. Gate valves are commonly used in water and wastewater treatment, oil and gas pipelines, and in various industrial processes.
A gate valve operates by lifting a rectangular or round gate out of the path of the fluid. When the valve handle or actuator is turned, it moves the stem and the gate vertically, allowing or blocking the flow. In the open position, the gate is fully retracted, providing a full bore for the fluid to pass through with minimal resistance.
A gate valve is better suited for on/off control, providing a tight seal and minimal pressure drop when fully open. A ball valve, on the other hand, is good for both on/off and throttling services due to its spherical disc that can be partially or fully rotated to control the flow.
Generally, gate valves are not recommended for throttling purposes. Continuous operation in a partially open state can cause damage to the gate and seats due to the high velocity flow and turbulence.
Gate valves provide a minimal pressure drop when fully open, offer tight sealing when closed, have a relatively simple design, and are cost-effective, especially for larger sizes. They are also suitable for high-pressure and high-temperature applications.
Regular maintenance of a gate valve includes periodic inspection for leaks, checking the stem and screw mechanism for smooth operation, and ensuring that the valve seats and gate are free from damage or corrosion. Lubrication of moving parts and stem threads may be necessary, depending on the valve’s design and application.
Gate valves are made from a variety of materials, including cast iron, stainless steel, brass, bronze, and PVC, depending on their intended use. The choice of material depends on factors like the fluid type, pressure, temperature, and environmental conditions.
Australian valve manufacturer supply high quality valves to Australian and International Customers for over 120 years.
Head Office Ballarat 03 5336 2113
Sydney 0411 749 507
Perth Office 08 9249 1942
Brisbane Office 0409 192 177
Adelaide Office 0418 503 570
Trademarks & Copyright © 2024 John Valves Pty Ltd | All Rights Reserved | Privacy Policy | Terms of Use | Sitemap
