Y14H-16P small bellows pressure reducing valve belongs to direct acting bellows spring pressure reducing valve. It is mainly composed of bellows, adjusting springs, valve seats, discs and other parts, and uses bellows to sense the pressure of the valve to drive the valve disc to change and control the valve opening to achieve the function of reducing pressure and stabilizing pressure. Set the outlet pressure by adjusting the adjusting bolt. Y44H/Y type direct acting bellows pressure reducing valve has sensitive balance of pressure regulation and pressure stabilization, which is suitable for pipeline use of gas and liquid media.