Safety Valves and Relief Valves for Professional Plant Engineering
Protect your vessels and pipework systems against excessive pressure. In closed systems, safety valves provide a reliable final line of defence. END-Armaturen’s professional safety valves and relief valves ensure maximum plant availability. As precision valves with a fixed set pressure, they reliably divert excess media. This allows you to control pressure spikes and preserve the structural integrity of your systems.
Maximum Process Safety: Reliable System Protection for All Media
Every plant has its own specific requirements for pressure relief. That is why we offer a wide range of safety and operational valves that are optimally tailored to gases, neutral liquids or corrosive media. Our reliable spring and sealing systems ensure precise set pressures and provide dependable protection for your components. Benefit from our high stock availability and find the right solution for your project straight away.
The Crucial Difference: Safety Valves, Relief Valves and Spill Valves
The strict functional separation of these valves is essential for your planning certainty. All valve types fall under the Pressure Equipment Directive 2014/68/EU. However, they fulfil fundamentally different functions.
The Safety Valve
This valve serves a purely safety-related function. It protects pressure equipment when the permissible limit values are exceeded. Safety valves fall within equipment category 4, are type-tested and are supplied with a calibration certificate from a testing organisation. These valves always, without exception, bear a CE mark and a permanent seal.
- The valve fulfils the legally prescribed protective function of the system.
- It opens instantly and fully as soon as the set pressure is reached. This full-stroke characteristic immediately discharges the maximum volume of fluid.
- The valve safely vents the fluid into the atmosphere or into a drain line.
The Relief Valve
The relief valve is structurally identical to the safety valve and has a similar purpose; however, it does not perform a safety function, but rather a purely operational one. No component test report or calibration certificate is available for these valves. The CE marking varies according to the medium, nominal diameter and medium pressure.
- The valve acts as a piece of operational equipment for relieving excess pressure during normal plant operation.
- It opens instantly and fully as soon as the set pressure is reached. This full-stroke characteristic immediately discharges maximum volumes of fluid.
- The valve safely discharges fluid into the atmosphere or into a discharge pipe.
The Spill Valve
This is a pressure-retaining component with a purely operational function. CE marking varies depending on the medium, nominal diameter and medium pressure.
- This valve acts as an operational control element to ensure constant system pressures.
- It opens proportionally and continuously in response to the rise in applied pressure. This protects sensitive components, such as pumps, from wear during normal operation.
- The valve directs the medium back into the system or tank in a controlled manner.
Comprehensive Plant Protection
Establish a comprehensive safety concept: a relief valve or spill valve reliably compensates for operational pressure peaks. Combine this with a component-tested safety valve as the final line of defence. This ensures your plant is reliably protected at all times in accordance with standards, even in the event of process deviations.
Technical Specifications & Design Features
Select the optimal body material for your system. Our range includes brass, red brass, high-grade stainless steel, GS-C/steel and GGG-40.3. These reliably safeguard both liquid and gaseous media.
We equip your valves for maximum media compatibility. You’ll receive high-quality seals made from PTFE, NBR, EPDM or FKM. Alternatively, we offer metal sealing variants.
Integrate the valves seamlessly into your pipework. The range offers precise internal and external threads as well as robust DIN flanges. Choose between angle valves and free-venting versions, depending on your requirements.
Ensure your system meets the highest standards. Our valves comply with DIN EN 4126-1. They are EC type-tested and TÜV component-tested. On request, a test report certifies the precisely set response pressure in barg.
Customised Valve Sizing for Your Specific System
Every system is subject to strict regulatory requirements, such as TRB 403 or AD Information Sheet A2. Ensure your planning is underpinned by sound technical expertise. Working pressure and closing pressure must be optimally matched. Our technical advisory service will assist you in selecting the correct valve. Contact our specialist department directly.