Product introduction：1. Module width is 124 mm. 2. When the pressure drop is small, the flow rate is high 3. Good control characteristics, small pressure hysteresis and initial pressure compensation. 4. Equipped with secondary exhaust 5. Lockable rotary handle 6. With or without pressure gauge 7. ms12-lr-po: pneumatic (pressure range is set by pilot controller) 8. ms12-lr-pe6: electric (pre-controlled by proportional pressure regulating valve) 9. Achieve sustainable operation by reducing the pressure level.