FUJIKURA FRA Low-Pressure Atmospheric Relief Valve

• Low-pressure atmospheric design: Suitable for low-pressure fluid lines where relieved fluid can be discharged externally.
• High-precision cracking performance: Cracking pressure is factory-set to match the specified low-pressure relief requirement.
• High sealability: Good sealing performance helps reduce leakage before the set cracking pressure is reached.
• Multiple port sizes: R1/8, R1/4, R3/8, R1/2, R3/4, and R1 ports are available.
• Brass and SUS316 bodies: Brass and SUS316 body options are available with FKM as the standard seal material; brass bodies are nickel plated.

Q1: What is the FUJIKURA FRA Series?
A: The FRA Series is a low-pressure atmospheric relief valve that releases fluid externally when line pressure reaches the set cracking pressure.

Q2: What operating conditions is the FRA Series suitable for?
A: It is suitable for low-pressure fluid lines where relieved fluid can be discharged externally, such as pressure tank control and general equipment relief.

Q3: What body materials are available?
A: Brass and SUS316 body options are available, represented by model codes B and T.

Q4: What pipe port sizes are available?
A: R1/8, R1/4, R3/8, R1/2, R3/4, and R1 ports are available.

Q5: What cracking pressure range is available?
A: The cracking pressure setting range is 5 to 1000kPa. For the R1/8 port, the maximum setting pressure is 950kPa.

Q6: How is the cracking pressure specified?
A: The cracking pressure is specified in kPa and added to the end of the model number, such as FRAT-2-V-500 for a 500kPa setting.

Q7: Can the FRA cracking pressure be adjusted by the user?
A: The cracking pressure is set before shipment, so the required setting pressure should be specified during selection.

Q8: What should be noted for settings of 5kPa or less?
A: For settings of 5kPa or less, the outlet must face upward to maintain the specified cracking characteristics.

Q9: What seal material is used?
A: FKM is the standard seal material. Other materials should be confirmed based on fluid, temperature, and operating environment.

Q10: What applications is the FRA Series suitable for?
A: It is suitable for machine tools, industrial furnaces, medical equipment, analyzers, fuel cells, batteries, water-treatment equipment, compressors, compact pressure vessels, and other low-pressure relief lines.