Gate Valves

Gate valves (also known as sluice valves) are one of the oldest and most widely used valve types in industry. Recognised for their simple design and ability to provide a tight seal, they are primarily used for isolation in pipelines where full flow or full shut-off is required. Unlike other valve types, gate valves are not designed for throttling but are valued for their low pressure drop, smooth operation, and long-term reliability when properly selected.

At Process Systems, we stock a comprehensive range of gate valves, including resilient seated, metal seated, stainless steel, ductile iron, brass, cast steel, and forged steel options. Our valves are engineered for different applications across water, wastewater applications, chemical handling, mining, HVAC, and fire protection systems. With models manufactured to Australian Standards such as AS2638-2, customers can be confident in quality, performance, and durability.

We ship our range of gate valves Australia-wide. Shop online today!

Why choose a gate valve?

The core advantage of a gate valve is its ability to provide full opening and full closing of a pipeline with minimal turbulence. Because the wedge or sluice gate moves completely out of the flow path, fluids pass through without obstruction, making these valves highly suitable for neutral liquids, clean water, and other applications where pressure drop must be minimised.

Gate valves offer:

• A simple design with few moving parts, improving longevity and ease of maintenance
• Smooth operation with low resistance to flow
• A tight seal against leakage, even in large size pipelines
• Flexibility to operate in vertical or horizontal positions
• High durability in demanding industries including civil waterworks, oil and gas, and power plants

Because of their versatility and adaptable design, sluice valves remain a trusted choice across countless systems in Australia and worldwide.

Types of gate valves in stock

Process Systems supplies a variety of gate valves to suit different applications and budgets. Our catalogue includes:

• Resilient seated gate valves – A ductile iron body with EPDM seats provides corrosion protection and a tight seal, making them ideal for water networks and wastewater applications. Options include rising and non-rising stem designs with handwheel operation.

• Stainless steel gate valves – Built in 316 stainless steel for excellent corrosion resistance and durability in chemical, marine, and food processing applications. Available in threaded BSP and ANSI flanged models.

• Cast steel gate valves – ANSI 150 and ANSI 300 flanged valves with metal seats, engineered for high-pressure service. Suited to steam, oil, and industrial systems where performance and strength are critical.

• Forged steel gate valves – Compact Class 800 forged steel designs with NPT or socket weld ends, offering max pressure capability up to 136 BAR. A dependable option for industries handling fluids under extreme pressure.

• Brass gate valves – Lightweight and cost-effective, making them suitable for general plumbing and low-pressure applications.

• Gate valve key caps – Accessories for operating underground or concealed gate valves, ensuring clear identification and secure operation.

Every valve is manufactured and tested for leakage, strength, and durability before dispatch. Customers can find full technical data on each product page, or contact our team for advice.

Choosing and maintaining a gate valve

When specifying a sluice gate valve or water gate valve, several factors should be kept in mind to ensure the right fit for your systems:

• Body and seat material: Choose between ductile iron, stainless steel, carbon steel, or brass depending on media, pressure, and environment.

• Stem design: Rising stem versions provide easy visual confirmation of valve position, while non-rising stem types are more compact and ideal where space is limited.

• Size and pressure: Confirm the correct size and pressure rating for the pipeline to guarantee safe operation and reliability.

• Operation method: Handwheel is standard, but gearboxes or actuators can be added for larger valves.

• Maintenance and repair: Gate valves can often be serviced in-line, with parts such as bolts, wedges, and seats available for replacement. Routine inspection helps extend service life and avoid unplanned shutdowns.

With correct installation and periodic maintenance, gate valves can deliver decades of service life, offering ease of use and long-term longevity in critical applications.

Why choose Process Systems?

Process Systems provides Australian industries with engineered valve solutions that combine durability, reliability, and fast availability.

• Wide range of gate valves in stock, including sluice valves and resilient seated models
• Products manufactured to Australian Standards with full test certification
• ISO 9001 quality system ensuring performance and consistency
• Australia-wide shipping with same-day dispatch on stocked items
• Team of engineers available to provide technical support and assist with product selection
• Free freight on qualifying online orders

Our gate valves are designed to withstand the demands of civil waterworks, fire protection systems, wastewater applications, and general industrial isolation duties.

Shop gate valves online and get free shipping Australia-wide. Order now!

Process Systems makes it easy to find the right gate valve for your project. Whether you need a sluice gate valve for municipal water applications, a stainless steel gate valve for chemical fluids, or a brass gate valve for general service, our range is designed to deliver smooth operation, tight seals, and proven performance.

Browse our full catalogue below or contact our team for technical advice on the most suitable valve for your system.