All of our products come standard with a 12 month warranty. The good news is we have very strict quality controls and all valves leave our warehouse tested (full material and testing certificates are available) and inspected so there are rarely any issues.

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Size 1/2" to 2" BSP Body 316 Stainless Steel Seat 316 Stainless Steel & RPTFE Pressure Range  2 to 20 Bar Temperature -20°C to 180°C Feature Closed Cap

Size 1/2" to 2" BSP Body Bronze Seat 316 Stainless Steel & PTFE Pressure Range 2 to 20 Bar Temperature -20°C to 180°C Feature Open Cap with Easing Gear

Size 1/2" to 2" BSP Body Bronze Seat 316 Stainless Steel Pressure Range 2 to 20 Bar Temperature -20°C to 180°C Feature Closed Cap

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Pressure Relief Valves should always be installed in accordance with the manufacturers recommendations, relevant local regulations and appropriate standards. In Particular always ensure; Correct direction of flow, Correct orientation, Clear access for general maintenance and repairs. Pressure Relief Valves can have various end connections such as flanged or threaded so installation will need to take this into account. Ensure there are no obstructions of the discharge port and ensure any seals or locking devices are still intact and not damaged.

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We are committed to ensuring that your information is secure. In order to prevent unauthorised access or disclosure, we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect online.

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Process Systems has its own range of bronze and stainless steel pressure relief valves in both closed cap and easing gear (lever) options. Not for Safety Relief applications.

There are many and varied reasons why a Pressure Relief Valve may be required for any particular application. In general they are installed to ensure plant and equipment pressure limitations are not exceeded. Examples can be found in; process equipment pressure limitations, piping, valves and ancillary pressure limitations, pressure vessel design limitations, system design pressure limitations etc

This really depends upon the environment and the quality of the media that the valve operates with. A correctly selected, sized and set Pressure Relief Valve should perform for many years. It is highly recommended that regular inspection and function testing of the valve is carried out at least once a year or as required by the relevant local regulations and appropriate standards. This will give the valve the best opportunity to continually operate safely for many years.

This privacy policy sets out how we uses and protects any information that you give us when you use this website. We are committed to ensuring that your privacy is protected. Should we ask you to provide certain information by which you can be identified when using this website, then you can be assured that it will only be used in accordance with this privacy statement. We may change this policy from time to time by updating this page. You should check this page from time to time to ensure that you are happy with any changes.

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We require this information to understand your needs and provide you with a better service, and in particular for the following reasons:

Our website may contain links to other websites of interest. However, once you have used these links to leave our site, you should note that we do not have any control over that other website. Therefore, we cannot be responsible for the protection and privacy of any information which you provide whilst visiting such sites and such sites are not governed by this privacy statement. You should exercise caution and look at the privacy statement applicable to the website in question.

A Pressure Relief Valve is a safety device or alarm used to limit or control the pressure level in a system, within a safe threshold to avoid an overpressure condition. Pressure Relief Valves are mainly used in liquid and gas systems to limit the pressure in the system to a predetermined preset level and if exceeded the relief valve will open and release any excess flow in order to prevent equipment failure. Other forms of relief valves are called Safety Valves; they are generally coded to a standard. Coded Safety Valves are commonly used on Steam Boilers and for other Steam systems and various pressure vessel requirements. Their level of opening pressure tolerance is far less than that of a relief valve. Safety Valves and Relief Valves are designed to operate in significantly different ways. The manufacture, use and operation of these devices is covered by a number of AU standards and International Standards all of which should be considered when sizing, selecting and setting any Pressure Relief Valve. The main purpose of any safety/relief valve is to protect life, property, and the environment in the event of overpressurization.

We will not sell, distribute or lease your personal information to third parties unless we have your permission or are required by law to do so. We may use your personal information to send you promotional information about third parties which we think you may find interesting if you tell us that you wish this to happen. If you believe that any information we are holding on you is incorrect or incomplete, please write to or email us as soon as possible at the above address. We will promptly correct any information found to be incorrect.

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This depends upon where you are based and the freight method chosen. If the express freight option is selected it is usually next day delivery to metropolitan areas in Australia for under 5kg. If free freight has been selected it will go by road freight which can be anywhere from 1 to 10 days depending upon your location. It usually averages 3 days.

The term ‘Process Systems’ or ‘us’ or ‘we’ refers to the owner of the website whose registered office is 4 / 308 New Cleveland Road, TINGALPA, QLD, 4173. Our ABN is 15 010 932 386. The term ‘you’ refers to the user or viewer of our website.

All valve series and other products manufactured or distributed by Process Systems Pty. Ltd. are warranted by Process Systems to be free of defects in material and workmanship for a period of 1 year from the date of purchase or as the manufacturer warrants. Process Systems obligation under this warranty is limited to repair or replacement of the defec1ive product or refund of the purchase price paid solely at the discretion of Process Systems and provided such defective product is returned to Process Systems freight prepaid and upon examination by Process Systems such product is found defective. This warranty shall be void in the event that the product has been subject to misuse, misapplication, improper maintenance, modification or tampering. This warranty is expressed in lieu of all other warranties, expressed or implied from Process Systems Pty. Ltd. representatives or employees. Process Systems reserves the right to change Valve and Brochure specifications without notice.

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These products are intended for use in industrial applications only. Do not use these products where pressures and temperatures can exceed those listed under ‘Technical Data’ and in our individual ‘Series’ data sheets. Before using these products with fluids other than these specified, for non-industrial applications, life-support systems, or other applications not within published specifications, consult Process Systems Pty Ltd. Through misuse, age, or malfunction, components used in industrial valve applications can fail in various modes. The system designer is warned to consider the failure modes of all component parts used in industrial valve applications and to provide adequate safeguards to prevent personal injury or damage to equipment in the event of such failure. System designers must provide a warning to the user in the system instructional manual if protection against a failure mode cannot be adequately provided. System designers and end users are cautioned to review specific warnings or specifications found in instruction sheets or labels packed or attached and shipped with the products. Our policy is one of continuous research and development. We therefore reserve the right to amend without notice the specifications given in this document or our individual ‘Series’ data sheets.

Welcome to our website. If you continue to browse and use this website, you are agreeing to comply with and be bound by the following terms and conditions of use, which together with our privacy policy govern Process Systems’s relationship with you in relation to this website. If you disagree with any part of these terms and conditions, please do not use our website.

For a relief valve, the degree of opening is directly proportional to the increase in the pressure. The opening of the valve is gradual, allowing it to open only at a preset pressure and release fluids until the pressure drops to the desired set pressure. A safety valve, on the other hand, will fully open immediately when the system pressure reaches the set pressure level allowing the system to completely evacuate. It is a safety device capable of operating at all times and is the last line of defence to prevent a catastrophic failure during an overpressure event. In compliance with the manufacturer, all relevant local regulations and standards, a set point should be determined to maintain safe and continuous operation. All required procedures must be followed and can be quite complex. As a result setting a relief valve or safety valve should only be carried out by trained personell. After setting the valve should be tagged and sealed to avoid tampering. Once set the relief valve should be handled with care, packed and transported in a secure manner preferably in the vertical position to avoid disturbing the set point. It must also be noted that the sizing and selection of a relief/safety valve is also of the utmost importance. It is pointless installing an inappropriate type or undersized valve on any application, even if it is set correctly. It is recommended that you always obtain advice from the manufacturer.

Process Systems has its own range of bronze and stainless steel pressure relief valves in both closed cap and easing gear (lever) options. Not for Safety Relief applications.

Size 1/2" to 2" BSP Body 316 Stainless Steel Seat 316 Stainless Steel & PTFE Pressure Range  2 to 20 Bar Temperature -20°C to 180°C Feature Open Cap & Easing Gear