Miyawaki RE3 Pilot-Operated Steam Pressure Reducing Valve
The Miyawaki RE3 is a pilot-operated pressure reducing valve designed for small to medium steam flow applications. The pilot chamber supplies the actuator section, which adjusts the main valve opening to maintain the downstream pressure at the set point. Manual adjustment is facilitated by a handle with a locking mechanism.
Technical Specifications
- Sizes: 1/2” to 2”.
- Connection: Threaded Rc or NPT.
- Maximum Operating Pressure: 1.6 MPa.
- Inlet Pressure: 0.1–1.6 MPa.
- Outlet Pressure Setting: 0.034–1.2 MPa.
- Kvs: 0.7–10.3 m³/h, depending on size.
- Maximum Pressure Reduction Ratio: 20:1.
- Maximum Operating Temperature: 220°C.
- Body Material: Brass C3771.
- Minimum Differential Pressure: 0.07 MPa.
- Lock-up Pressure: up to 0.03 MPa.
Applications
Used for localized steam pressure reduction in food processing equipment, dyeing facilities, cleaning systems, heating elements, and HVAC consumers. Not intended for central stations with high flow rates; selection should be based on capacity charts with p1, p2, and steam flow rate.
Installation and Selection
Installation should include a steam filter before the valve, inlet/outlet pressure gauges, isolation valves, maintenance bypass, and condensate management with an appropriate separator and steam trap where necessary. Selection requires inlet pressure, desired outlet pressure, flow rate in kg/h, temperature, connection type, reduction ratio, and available differential pressure.



