FUJIKURA VR1 Low-Pressure Atmospheric Relief Valve

• Low-pressure precision relief: Suitable for clean compressed-air lines requiring delicate relief control under low-pressure and low-flow conditions.
• Small opening-closing pressure difference: The small difference between opening and closing pressure supports precise low-pressure relief performance.
• Compact space-saving design: The compact body supports installation in limited equipment spaces.
• Standard and custom settings: Standard relief pressure settings are 50, 100, and 150kPa, with custom settings available from 30 to 300kPa.
• Brass body with electroless nickel plating: The body is brass with electroless nickel plating, and the rubber material is fluororubber for clean compressed-air applications.

Q1: What is the FUJIKURA VR1 Series?
A: The VR1 Series is a compact low-pressure atmospheric relief valve that releases pressure externally when a clean compressed-air line reaches the set relief pressure.

Q2: What operating conditions is the VR1 Series suitable for?
A: It is suitable for low-pressure and low-flow clean compressed-air lines that require delicate relief control or repeated relief reproducibility.

Q3: What standard relief pressures are available?
A: Standard relief pressure settings are 50kPa, 100kPa, and 150kPa.

Q4: Can the VR1 Series be set to other relief pressures?
A: Yes. Custom relief pressure settings other than the standard specifications are available from 30 to 300kPa.

Q5: What working fluid does the VR1 Series use?
A: The working fluid is clean compressed air. Liquid or corrosive-fluid use should not be applied without confirming operating conditions.

Q6: What pipe port sizes are available?
A: Rc1/8 and Rc1/4 pipe port sizes are available, represented by model codes M1 and M2.

Q7: Why is the VR1 Series suitable for precise low-pressure relief?
A: The small difference between opening and closing pressure supports more delicate pressure relief in low-pressure lines.

Q8: What materials are used in the VR1 Series?
A: The body is brass with electroless nickel plating, and the rubber material is fluororubber.

Q9: What should be noted after long periods without operation?
A: Relief pressure may rise after the valve is left unused for a long time. Applications with long standby periods should confirm relief characteristics under actual conditions.

Q10: What applications is the VR1 Series suitable for?
A: It is suitable for pressure tank control, low-pressure air relief, low-flow line protection, machine tools, industrial furnaces, medical equipment, analyzers, gas generators, and compact pressure vessels.