working principle When the valve feeds water from the inlet end, the water flows through the needle valve into the main valve control chamber, and passes through the pilot valve and the ball va
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working principle
When the valve feeds water from the inlet end, the water flows through the needle valve into the main valve control chamber, and passes through the pilot valve and the ball valve out of the main valve control chamber to the outlet, at which time the main valve is fully open or floating. Set the flow regulating valve on the upper part of the main valve to set a certain opening degree for the main valve. By adjusting the needle valve opening degree and adjusting the pilot valve spring pressure, the main valve opening degree can be maintained at the set opening degree, and the pilot valve is automatically adjusted when the pressure changes, keeping the flow rate constant.
The main technical parameters
Nominal pressure(Mpa) | Shell test pressure(MPa) | Seal test pressure(MPa) | Export adjustable pressure(MPa) | Pressure characteristics△P2P1 | Flow characteristics△P2P1 | Applicable medium | Medium temperature(℃) |
1.0 | 1.5 | 1.1 | 0.09-0.8 | P2×8% | P2×15% | water | 0-80 |
1.6 | 2.4 | 1.76 | 0.10-1.2 | P2×10% | P2×20% | ||
2.5 | 3.75 | 2.75 | 0.15-1.6 | P2×12% | P2×25% |
