I. Structural features and usefulness of YG13H / Y internal thread high sensitivity steam pressure reducing valve:
小波纹管式减压阀 属于先导活塞式减压阀。 This series of small bellows pressure reducing valves are pilot piston pressure reducing valves. It consists of a main valve and a pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, spring and other parts. The pilot valve is mainly composed of valve seat, disc, diaphragm, spring, adjusting spring and other parts. The outlet pressure is set by adjusting and adjusting the spring pressure, the outlet pressure changes are sensed by the diaphragm, and the size of the over-flow area of the main valve throttling position is adjusted by the pilot valve opening and closing of the driving piston to realize the function of pressure reduction and pressure stabilization.
This series of products has made the following improvements on the basis of ordinary pressure reducing valves, increasing the area of the piston, changing the throttle structure, changing the sealing form, improving the structure of the pilot valve and adjusting the spring, thereby improving the product from the following aspects Performance.
1. Improved the sensing efficiency and sensitivity of outlet pressure changes, greatly reducing the pressure deviation caused by upstream pressure changes, flow changes and other factors.
2. Improved streamline distribution and reduced noise.
3. Improve the sealing surface structure and prolong the life of the sealing surface.
2. Main technical parameters and performance indicators of YG13H / Y internal thread high sensitivity steam pressure reducing valve:
Nominal pressure (Mpa)
Case test pressure (Mpa) *
Sealing test pressure (Mpa)
Maximum inlet pressure (Mpa)
Outlet pressure range (Mpa)
Pressure characteristic deviation (Mpa) △ P2P
Flow characteristic deviation (Mpa) P2G
Minimum pressure difference (Mpa)
*: Case test does not include diaphragm, top cover
Three, YG13H / Y internal thread high sensitivity steam pressure reducing valve main parts material
Body valve cover bottom cover
Cylinder liner piston
Aluminum iron bronze
Pilot valve seat
Main valve spring
Guide main spring
Four, YG13H / Y internal thread high sensitivity steam pressure reducing valve flow coefficient (Cv)
Five, YG13H / Y internal thread high sensitivity steam pressure reducing valve connection size
1-1 / 4 "
1-1 / 2 "