Flanged stainless steel isolation valves control the flow of fluids and gases in pipelines by opening or closing a ball, gate, or disc.

They have a stainless steel flange that connects to the pipeline with bolts, creating a secure and leak-proof joint.

The flange also allows for easy installation and removal of the valves when needed. These valves are suitable for harsh and demanding environments, such as those in the mining, oil & gas industries, where they need to withstand corrosion, high pressure, and high temperatures.

They also provide a manual control mechanism enabling operators to isolate parts of pipelines or equipment for maintenance, repairs, or emergencies, reducing downtime and ensuring uninterrupted industrial processes.

Ancillary valves that complement isolation valves such as check, foot valves and Y- strainers are also available. Isolation valves are often installed in conjunction with these types of valves to allow for quick maintenance.

Stainless steel is an ideal material for flanged isolation valves because of its excellent properties.

Stainless steel has high corrosion resistance, which prevents valves from deteriorating and extends their lifespan in corrosive environments. Stainless steel also has high tensile strength and temperature resistance, enduring high stress and heat without deforming or breaking.

Furthermore, stainless steel has a smooth, non-porous surface to prevent the build-up of contaminants, making it easy to clean and maintain, improving efficiency and reducing downtime.

Flanged stainless steel isolation valves are widely used in the mining, oil and gas industries.

In the oil and gas industry, these valves are important components in wellheads, pipelines, and refining processes, controlling the flow of crude oil and refined products effectively.

These valves also play a key role in safety systems, allowing operators to isolate sections of pipelines or equipment during maintenance, emergency shutdowns, or repairs, preventing potential hazards and ensuring safe and continuous operations. In the mining industry, these valves are essential for regulating the flow of water, chemicals, and slurries during extraction and processing operations.

Flanged stainless steel isolation valves can be classified into different types based on their design, function, and operation. Some of the common types are:

Gate valves
These valves use a gate or wedge that moves up and down to open or close the flow. They are suitable for on-off applications where full flow is required and minimal pressure drop is desired. The most common flange gate valves used are generally of a bolted bonnet design with an external screw, yoke, and rising stem. The body is most commonly cast with 316 stainless steel.

Globe valves
These valves use a disc that moves up and down to regulate the flow. They are suitable for throttling and flow control applications where precise adjustment and high-pressure drop are acceptable. Globe Valves have different types of discs, seats, and bonnets, and can be operated by a handwheel or an actuator.

Ball valves
These valves use a spherical ball with a hole that rotates to align or misalign with the flow. They are only suitable for on-off where tight shut-off and quick operation are required.

Check valves
These valves use a disc, ball, or flap that moves to allow or prevent the flow depending on the direction of pressure. They are suitable for preventing backflow and protecting pumps and equipment from damage. They do not have any external control mechanism and rely on the fluid pressure to operate.

Y strainers
These devices are used to remove impurities from pipeline systems. They are often used as a method of prefiltration. The strainer mesh is available in a variety of different opening sizes (measured in microns) to suit different mediums such as water, air, or gas. The Y design allows easy removal of the filter for servicing or replacement.

Zetco Valves is a national valve distributor that specialises in high quality isolation valves for various applications. Zetco offers a range of flanged stainless steel isolation valves that are certified to meet specific requirements relevant to mining, oil and gas industries. Zetco’s flanged stainless steel isolation valves meet the following standards and certifications:

WaterMark
WaterMark is a mandatory certification scheme for plumbing products distributed in Australia. It ensures that products comply with the relevant Australian Standards. The WaterMark certification system is a mandatory certification system that mandates practitioners install WaterMarked products in installations that fall under Australian Standard 3500.WaterMark certified products are marked with the WaterMark logo and a licence number. Zetco has WaterMark certification for its stainless steel flanged gate valves, swing check valves, spring check valves, and globe valves.

Australian Gas Association (AGA)
AGA is a conformance assessment body (CAB) in the safety, energy efficiency and renewable energy sectors. AGA provides certification and testing services for gas products, components, and systems in Australia. AGA certified products are marked with the AGA logo and a licence number. Zetco has AGA certification for its stainless steel ball valves (both flanged and threaded) and needle valves. These valves are suitable for gas applications in the oil and gas industry.

ISO 9001
ISO 9001 is an international standard for quality management systems. It demonstrates that an organisation can consistently provide products and services that meet customer and regulatory requirements. ISO 9001 certified organisations are audited regularly to ensure they maintain their quality standards. Zetco has ISO 9001 certification for its design, import, assembly, packaging, and distribution of flanged isolation valves specific to the mining, oil, and gas industries. This certification reflects Zetco’s commitment to quality management throughout its operations.

Zetco Valves is more than just a valve distributor. Zetco provides the technical buyer with valve design technical specifications and availability.

Product selection
Zetco provides detailed technical documentation to inform selecting valves for your specific application. Zetco can also adapt and develop products based on your project specification and technical requirements, using its extensive technical expertise and an array of components and body configurations.

Availability
Zetco stocks a complete range of manual isolation valves in Australia, so you don’t have to wait for back ordered products to come from overseas.