FUJIKURA FRHA High-Pressure Atmospheric Relief Valve

• High-pressure relief protection: The 1000 to 4200kPa cracking pressure range supports high-pressure piping and overpressure protection.
• Atmospheric relief design: When line pressure reaches the set value, the valve releases pressure externally for atmospheric discharge applications.
• Factory-set cracking pressure: Cracking pressure is set before shipment according to the specified pressure requirement.
• Compact lightweight structure: The compact body is available with R1/8 and R1/4 inlet ports for installation in equipment piping.
• Brass and SUS316 body options: Brass and SUS316 bodies are available, with FKM as the standard seal material for high-pressure relief applications.

Q1: What is the FUJIKURA FRHA Series?
A: The FRHA Series is a high-pressure atmospheric relief valve that releases pressure externally when line pressure reaches the specified cracking pressure.

Q2: What high-pressure applications is the FRHA Series suitable for?
A: It is suitable for high-pressure line relief, pressure tank control, compressors, compact pressure vessels, gas generators, machine tools, industrial furnaces, medical equipment, and analyzers.

Q3: What is the difference between the FRHA and FRA Series?
A: FRA is a low-pressure atmospheric relief valve. FRHA is a high-pressure atmospheric relief valve with a higher 1000 to 4200kPa cracking pressure range.

Q4: What is the maximum setting pressure?
A: The maximum setting pressure is 4.2MPa, equal to 4200kPa.

Q5: What cracking pressure range is available?
A: The available cracking pressure setting range is 1000 to 4200kPa. The required pressure should be specified during selection or ordering.

Q6: Can the FRHA cracking pressure be adjusted by the user?
A: The cracking pressure is set before shipment according to the specified pressure requirement.

Q7: What pipe port sizes are available?
A: R1/8 and R1/4 inlet ports are available, represented by model codes 1 and 2.

Q8: What material options are available?
A: Brass and SUS316 body options are available. Nut material options include SUS303 + nylon as standard and SUS316L. FKM is the standard seal material.

Q9: Can the FRHA Series be used with liquids?
A: Fluid compatibility should be confirmed based on material compatibility, pressure, temperature, and operating conditions. Liquid applications should be checked before selection.

Q10: What should be checked when selecting an FRHA high-pressure relief valve?
A: Confirm the set pressure, inlet port size, body material, nut material, seal material, operating temperature, and discharge direction to meet high-pressure relief and safety requirements.