Emergency Relief Valve
An emergency relief valve (ERV) is a safety tool used to protect against overpressurization of machinery and pipe systems. It is designed to automatically open and relieve excess pressure that can occur due to process upsets, equipment failure, or other abnormal conditions.
The ERV is typically set to open at a pressure slightly above the normal operating pressure of the system it is protecting. When the pressure in the system reaches this set point, the valve opens, allowing the excess pressure to be released to a safe location. This prevents the system from being damaged or destroyed by the overpressure.
Emergency Relief Valves are commonly used in industries such as oil and gas, chemical processing, and power generation. They are often required by regulations and codes to ensure the safety of personnel and the environment. ERVs can be designed to handle a wide range of pressures, temperatures, and flow rates, and they come in various types, such as spring-loaded, pilot-operated, or rupture disk valves.
It is essential to ensure that emergency relief valves are correctly sized, installed, and maintained to ensure their proper operation in the event of an emergency. Regular inspections and testing should be performed to verify that the valves are functioning correctly and meet the required standards.
Features Of Emergency Relief Valve
Emergency Relief Valves (ERVs) are designed to protect equipment and piping systems from overpressure conditions. Some common features of ERVs include:
- 1. Pressure Setting: ERVs are designed to open automatically at a predetermined pressure setting. The pressure setting is based on the maximum allowable working pressure of the equipment or piping system being protected.
- 2. Capacity: ERVs are designed to handle a specific flow rate of fluid or gas. The capacity of the valve must be sufficient to relieve the maximum expected flow rate during an overpressure event.
- 3. Materials of Construction: ERVs are typically made of materials that are compatible with the process fluid or gas, as well as the environment in which they will be installed. Common materials of construction include carbon steel, stainless steel, and exotic alloys.
- 4. Valve Design: ERVs are available in different designs, such as spring-loaded, pilot-operated, or rupture disk valves. The design of the valve depends on the specific application and the pressure and temperature conditions.
- 5. Outlet Connection: The outlet connection of the ERV must be properly sized and oriented to ensure that the excess fluid or gas is safely discharged to a location where it will not pose a hazard.
- 6. Testing and Maintenance: ERVs must be tested periodically to ensure that they are functioning correctly and meet the required standards. Maintenance may involve cleaning, lubrication, and replacement of damaged or worn parts.
- 7. Compliance: ERVs are subject to various regulatory requirements, such as the ASME Boiler and Pressure Vessel Code, API standards, and other industry-specific codes and standards. It is essential to ensure that the ERV complies with all applicable codes and standards.
|Brand :||Fidicon Devices India|
|Item :||Emergency Relief Valve|
|Size :||15NB TO 800NB (ANSI/ASA/ASME B16.5/PN/NPT)|
|Type :||Spring Loaded, Lockable (Optional As A Manhole).|
|Connection :||Flanged, Threaded|
|Materials :||ASTM A216 GR. WCB(CS), SS 316, SS 304, SS 316TI, FORGED STEEL ASTM A105, HASTELLOY C, PTFE, RUBBER, CAF, FEP, METALLIC SPIRAL WOUND GRAPHITE, and other as per customer requirement.|