FUJIKURA FRHL High-Pressure Inline Relief Valve

• High-pressure relief protection: The 1000 to 4200kPa cracking pressure range supports high-pressure piping and overpressure protection.
• Outlet recovery piping: The inline design allows relieved gas or liquid to be routed through the outlet for recovery instead of direct external discharge.
• Air and liquid compatibility: The series supports compressed air and liquid applications for high-pressure fluid control and pressure-tank protection.
• Factory-set cracking pressure: Cracking pressure is set before shipment according to the specified pressure requirement.
• 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 FRHL Series?
A: The FRHL Series is a high-pressure inline relief valve that routes exhausted gas or liquid through outlet recovery piping when line pressure reaches the specified cracking pressure.

Q2: What is the difference between the FRHL and FRHA Series?
A: FRHA is a high-pressure atmospheric relief valve for direct external discharge. FRHL is a high-pressure inline relief valve with an outlet connection for recovering exhausted gas or liquid.

Q3: What fluids can the FRHL Series handle?
A: The FRHL Series supports compressed air and liquid applications. Compatibility with the body, nut, and seal materials should be confirmed before selection.

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 cracking pressure setting range is 1000 to 4200kPa, with a minimum setting unit of 100kPa.

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

Q7: What connection sizes are available?
A: Two connection sizes are available: inlet R1/8 × outlet Rc1/8 and inlet R1/4 × outlet Rc1/4.

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: What high-pressure relief applications is the FRHL 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.

Q10: What should be checked when selecting an FRHL high-pressure inline relief valve?
A: Confirm the set pressure, connection size, body material, nut material, seal material, operating temperature, fluid compatibility, and outlet recovery piping layout.