The 4YJ-R Roller Valve offers versatile manual control for pressures between 0.15 MPa and 0.8 MPa. Suitable for air, water, oil, and gas, it features a 1/4 inch port, durable aluminum alloy construction, and NBR seals. Operating in temperatures from -5°C to 60°C and humidity of 5-95% RH, it meets CE and ISO9001 standards for reliable performance in various environments.