FUJIKURA RR-KA Cleanroom Ultra-Precision Air Relay

• Cleanroom-compatible construction: Stainless steel, fluoro rubber, and electroless nickel-plated components help minimize particle generation from the regulator.
• External pilot pressure control: Output pressure is controlled by an external pilot signal, supporting remote regulation and integration with pneumatic control systems.
• High-precision servo-balanced design: A rolling diaphragm and pressure-sensing element provide sensitivity within 0.1% F.S. and repeatability within ±0.1% F.S.
• External exhaust connection: Piping can be connected to the relief and bleed ports to discharge relief and bleed air outside the cleanroom.
• Individual and manifold configurations: Rc1/4 individual piping and manifold connection models are available for different installation requirements.

Q1: What is the FUJIKURA RR-KA Series?
A: The RR-KA Series is an externally piloted cleanroom ultra-precision air relay regulator with a servo-balanced pressure-control structure.

Q2: What complete RR-KA models are available?
A: Standard models are RR-8-2-KA and RR-8-M-KA.

Q3: What is the difference between RR-8-2-KA and RR-8-M-KA?
A: RR-8-2-KA uses an Rc1/4 individual pipe connection and includes a mounting bracket. RR-8-M-KA uses a manifold connection for centralized installation.

Q4: How does the RR-KA Series differ from the RS-KA Series?
A: RR-KA uses an external pilot pressure signal to control output pressure. RS-KA is an internally piloted regulator with direct pressure adjustment at the body.

Q5: What is the set pressure range?
A: The set pressure range is 0.014 to 0.84MPa, equivalent to 2.0 to 122psi.

Q6: What pressure-control accuracy does the RR-KA Series provide?
A: Sensitivity is within 0.1% F.S., and repeatability is within ±0.1% F.S.

Q7: Why is the RR-KA Series suitable for cleanrooms?
A: Stainless steel, fluoro rubber, and electroless nickel-plated components help reduce particle generation from the regulator.

Q8: Is exhaust air discharged directly into the cleanroom?
A: Relief and bleed ports can be connected to exhaust piping so that relief and bleed air are discharged outside the cleanroom.

Q9: What external pilot and gauge port sizes are used?
A: The external pilot connection is Rc1/4, and two Rc1/4 pressure gauge ports are provided.

Q10: What applications is the RR-KA Series suitable for?
A: It is suitable for remote precision pressure control in cleanrooms, buffers, balancers, pressing equipment, rolling equipment, and tension control.