[DP17 Pilot Pressure Reducing Valve]-a new type pilot-operated super large diaphragm pressure reducing valve, this product has made great improvements on the basis of ordinary pressure reducing valve. The diaphragm adopts new materials and greatly increases the working area. Therefore, slight changes in the upstream pressure or downstream load of the valve can be timely and accurately fed back to the main valve diaphragm to adjust the opening of the main valve to ensure the stability of the downstream pressure. . Another outstanding feature of this product is that multiple pilot valves can be installed and interchanged on the same valve body, while maintaining pressure, temperature control, upstream pressure control, remote switch control, etc. can be achieved.
[Working principle]-When the pilot valve spring is in the free state before starting, the main valve and the pilot valve are in the closed state. The pilot valve is opened by spring force, steam enters the main diaphragm chamber through the pilot valve, and part of the steam flows out through the control hole. Main valve. As the steam flows through the main valve, the downstream pressure increase is fed back through the induction tube, acting under the pilot valve diaphragm, balancing the spring pressure on the upper part of the diaphragm, causing the pilot valve to form a closed throttle, maintaining the pressure in the main diaphragm, and controlling the main valve Open the appropriate amount of steam. The downstream pressure can be changed by adjusting the spring on the pilot valve diaphragm.
Spring pressure range: yellow 1-3bar blue 2-8bar red 7-12bar
