Servo-balanced system comprising rolling diaphragm and measuring capsule provides exceptionally precise and stable pressure control with constant bleed feature. RR series offers exceptionally precise 1;1 pressure relay control with ±bias adjustment capability by external pilot operation. However, the adjustment is ±0.2Mpa at maximum.

• Available to control air pressure accurately by sensibility 0.1%F.S., repeatability ±0.1%F.S.
• Superior in relief, pressure, flow sensitivities. Particularly, minimum relief pressure (relief sensitivity) as low as 0.03kPa,0.004psi(theoretical value) finds best applications in tension control, air balancers and others.
• No readjustment of regulated pressure required even after long "down-time".
• Available to remote-control by using our air relay RR series.

• Tension control - Combination with BF cylinders (SC series): Printing machines, paper craft machines, plastic film fabricating machines, textile machines, etc.
• Press control - Combination with BF cylinders: Grinding machines, friction testing machines, soil tester, cutter, etc.
• Volume booster - Valve regulators relating to instrumentation devices, etc.
• Set pressure of various regulated pressures by remote-control. - Best applications for air-balancer, air-micrometer, leak tester, dispenser and others.