Equipment such as pipelines, vessels, and tanks at a controlled pressure. The pressure should be maintained within a safety range since pressure above the safety range may exert unnecessary pressure on the equipment and have negative effects on the performance of the process.
Pressure relief valves come in handy in this scenario. The function of these valves is to release excess pressure once it exceeds a specific level. In essence, these valves offer an avenue through which excess pressure may escape thus ensuring protection of pressure vessels, pipelines, and other equipment.
Simply put, the purpose of pressure relief valves in this case is to act as another safeguard once the pressure exceeds the safety level. The valve is thus an essential component of several industrial processes which require careful management of pressure.
The selection of an appropriate valve in this case is also an important aspect of creating a safe and reliable system. The valve should be appropriate for the operating pressure and temperature, nature of the fluid or gases being handled. There are also some other considerations like valve size, materials used in construction, connections, and application specifics among others which should be put into consideration.
How does a Pressure Relief Valve work?
The pressure relief valve remains closed until the system pressure exceeds the pre-set pressure value. The valve opens when the system pressure equals the pre-set value, letting the pressurised liquid flow out of the valve. As the excess pressure is released, the pressure inside the system comes down. Once it gets back to its appropriate level, then the valve will close once again.
The mechanism is quite easy, but this particular valve does have an important function in pressure control. When there is too much pressure that is left unchecked, it might bring about certain problems.
AXEGIC describes its pressure relief and safety valves as being designed to help prevent pressure from exceeding the design limits of pressure vessels and other equipment.
Selecting the Right Valve for the Application
A pressure relief valve should be selected according to the conditions in which it will operate.
The first things to check are the operating pressure and required set pressure. The valve should be suitable for the pressure range of the system.
Temperature is yet another important consideration, particularly if the valve is going to deal with high temperature fluids or gases. The valve material should also be compatible with the fluid used.
Valve sizing and connections should also be in line with the piping systems. Depending on the installation, different connection options may be required.
- Normal operating pressure
- Required set pressure
- Operating temperature
- Type of fluid or gas
- Valve size
- Pressure class
- Material
- End connection
- Required standards
Looking at these points together makes valve selection easier and helps avoid problems during installation.
AXEGIC Pressure Relief and Safety Valves
AXEGIC Group Inc. offers pressure relief and safety valves as part of its industrial valve range.
From the product information provided by AXEGIC, the valves come in sizes ranging from DN15 to DN300 (NPS 1/2 to NPS 12) and pressure class of 150, 300, and 600. The materials listed include cast carbon steels such as WCB and WCC, as well as stainless steels like CF8, CF8M, CF3, CF3M, CN7M, and CG3M.
The listed materials include cast carbon steel grades such as WCB and WCC, along with stainless-steel grades including CF8, CF8M, CF3, CF3M, CN7M, and CG3M.
The valves are available with flanged, screwed, and socket-weld end connections, depending on the application.
AXEGIC also lists API 520 for design and manufacturing, ASME B16.10 for face-to-face dimensions, ASME B16.5 for end connections, and API 527 for testing.
These specifications give industries different options when selecting a valve for their piping and pressure protection requirements.
Applications across Different Industries
Pressure relief and safety valves are used in many industries where equipment and processes operate under pressure.
AXEGIC lists applications in chemical and process plants, refineries and petrochemicals, fertilizer, pharmaceutical, food processing, sugar, steel, oil, thermal power, textile, dyes and intermediates, and effluent and water treatment industries.
The valve requirements can vary depending on the application. A valve suitable for one process may not be the right choice for another. This is why the operating conditions should always be checked before finalising a valve.
Why the Supplier Matters
Selecting the right industrial valve is not just about choosing the right valve. Correct specifications of the valve are also essential.
Pressure Relief Valve Supplier having experience can study the application and help select a proper valve in terms of size, material, pressure rating, and connections.
According to AXEGIC, it designs, supplies, and exports industrial valves and strainers. It has its headquarters located at Ahmedabad, Gujarat.
Rather than choosing the valve on the basis of cost, availability, or pipeline size, it is better to have the whole application discussed first.
Conclusion
The pressure relief valve is a minor component of an industrial system but is very significant in ensuring the equipment is protected in case the pressure exceeds the recommended pressure. The selection process of the appropriate valve should not only involve selecting the appropriate dimensions of the valve. Considerations like the operating pressure, temperature, media, material of the valve, connections, pressure class, and other specifications of the system should be put into consideration.
AXEGIC provides various pressure relief and safety valves in different sizes, material of construction, pressure class, and connections among others in order to cater to different industrial systems. As a buyer looking for an appropriate Pressure Relief Valve Supplier, it would be very important to provide your operating conditions and system specifications to the supplier.
FAQs - Frquently Asked Questions
The purpose of pressure relief valves is to relieve any excessive pressure that exceeds a certain predetermined pressure level.
The following are some of the parameters that should be considered before selecting any particular valve; the operating pressure, set pressure, temperature, medium, valve size, valve pressure class, valve material, and valve connections.
In AXEGIC catalogue, you will find pressure relief valves in DN 15-DN300, or NPS 1/2-NPS 12.