Parker 减压阀
Parker Pressure Relief Valves
Relief Valves,High Pressure - MAR Series

Parker's MAR Series (Hard and Soft Seat) relief valves provide reliable venting of gases or liquids for set pressures from 1,500 PSI (103 BAR) minimum to 75,000 PSI (5171 bar).

Parker's MAR Series Relief Valves offer two distinct designs for systems up to 20,000 PSI (1378 BAR). One is a hard seat relief valve and the other is a soft seat relief valve. Parker's MARA Series (Hard Seat) relief valves provide reliable venting of gases or liquids for set pressures from 3,000 psi (206.8 bar) minimum to 20,000 psi (1378 bar). The standard temperature range for all models is -423oF to 400oF
(-252oC to 204oC). A high temperature option to 750oF (399oC) is also available. These precision valves are designed for pressure gas systems, cryogenic systems, petrochemical applications and other special systems.

These precision valves are designed for pressure gas systems, where zero leakage is critical. They are not recommended for liquid nitrogen or liquid carbon dioxide, which produce gas at cryogenic temperatures upon relief. Relief valves are designed to open proportionally to increasing pressure. Therefore, they are not recommended for applications requiring immediate full valve flow at set pressure (such as decompositions, polymerizations, etc.). Full flow of relief valve is defined at 10% over set pressure.

Parker's MARSA Series (Soft Seat) relief valves utilize a soft seat design for reliable venting of gases at set pressures from 1,500 psi (103 bar) to 20,000 psi (1378 bar). The operating temperature range is 32oF (0oC) to 400oF (204oF). The soft seat design provides bubble tight sealing, repeatable pop-off, and reseat. Additionally, soft seat valves provide a higher cycle life than metal seat relief valves. These precision valves are designed for pressure gas systems, where zero leakage is critical. They are not recommended for liquid nitrogen or liquid carbon dioxide, which produce gas at cryogenic temperatures upon relief. Relief valves are designed to open proportionally to increasing pressure. Therefore, they are not recommended for applications requiring immediate full valve flow at set pressure (such as decompositions, polymerizations, etc.). Full flow of relief valve is defined at 10% over set pressure.

Relief Valves,High Pressure - MAR Series

Markets:

- Chemical Processing
- Petrochemical
- Research
- Power


Features/Benefits:
- Hard and Soft Seat designs
- NPT High Pressure End Connections
- Heat code traceability
- High Cycle Life
- Large Filter Areas

Applications:

- Process Control Lines
- Pressure Gas Systems
- High Pressure Equipment Protection
- Cryogenic Systems

Technical Specifications

Relief Valves,High Pressure - MAR Series 型号