Cleanroom Super-Precision Regulator
- FUJIKURA RS-KA provides 0.1% F.S. sensitivity and ±0.1% F.S. repeatability, with low-particle materials and external exhaust connections.

Cleanroom Super-Precision Regulator
| Item | RS-4- ☐-KA | RS-8- ☐-KA |
|---|---|---|
| Complete model numbers | RS-4-2-KA RS-4-M-KA | RS-8-2-KA RS-8-M-KA |
| Control type | Internally piloted servo-balanced type | |
| Working fluid | Clean compressed air | |
| Set pressure range | 0.014 to 0.42 MPa | 0.014 to 0.84 MPa |
| Supply pressure range | 1.0 MPa max. | |
| Relief function | Incorporated | |
| Repeatability | Within ±0.1 % F.S. | |
| Sensitivity | Within 0.1 % F.S. | |
| Air consumption | Within 3.7 L/min (ANR) | |
| Operating temperature range | 5 to 60℃ | |
| Pipe connection | Rc1/4 or manifold | |
| Gauge port | Rc1/4 | |
| Mounting bracket | Standard, excluding manifold models | |
| Weight | 0.41 kg | |
Q1: What is the FUJIKURA RS-KA Series?
A: The RS-KA Series is a cleanroom-compatible super-precision regulator with a servo-balanced pressure-control structure.
Q2: What complete RS-KA model numbers are available?
A: Available models are RS-4-2-KA, RS-4-M-KA, RS-8-2-KA, and RS-8-M-KA.
Q3: What is the difference between RS-4-KA and RS-8-KA?
A: The primary difference is the set pressure range. RS-4-KA covers 0.014 to 0.42MPa, while RS-8-KA covers 0.014 to 0.84MPa.
Q4: What do the model codes "2" and "M" indicate?
A: Code "2" indicates an Rc1/4 individual piping model, while "M" indicates a manifold connection model.
Q5: What pressure-control accuracy does the RS-KA Series provide?
A: Sensitivity is within 0.1% F.S., and repeatability is within ±0.1% F.S.
Q6: Why is the RS-KA Series suitable for cleanrooms?
A: Stainless steel, fluoro rubber, and electroless nickel-plated components help reduce particle generation from the regulator.
Q7: Is relief 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.
Q8: Does the RS-KA Series include a relief function?
A: Yes. A relief function is incorporated to release secondary-side air when the pressure setting is reduced.
Q9: Is a mounting bracket included?
A: A bracket is standard with Rc1/4 individual piping models. It is not included with manifold models.
Q10: What applications is the RS-KA Series suitable for?
A: It is suitable for precision cleanroom pressure control, buffers, balancers, pressing equipment, rolling equipment, and tension control.