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This series reducing valve is direct action membrane type spring reducing valve, mainly composed of membrane, adjusting spring, valve seat and valve flap. It sense the change of lower stream pressure through the membrane and drive the valve flap, change and control the valve opening to realize the function of pressure reducing the regulating. Set the outlet pressure by adjusting the spring pressure through adjusting bolt The product works stably and flexibly. It is suitable for water supply piping of high buildings and assorting pilot valve for water power control valve.
Main Technical Parameters and Indexes of Performance.
| Nominal Pressure | 1.0 Mpa | 1.6 Mpa |
| Tested Pressure of Shell | 1.5 Mpa | 2.4 Mpa |
| Sealing Test Pressure | 1.0 Mpa | 1.6 Mpa |
| Maximum Upstream Pressure | 1.0 Mpa | 1.6 Mpa |
| Pressure Range of Outlet | 0.09-0.8 Mpa | 0.1-1.2 Mpa |
| Minimum Differential Pressure | 0.1 Mpa | 0.1 Mpa |
| Medium | Water | |
| Operating Temperature | 0-80 | |
*the shell test does not include membrane and top cover.
Flow Characteristics.
| DN | 15 | 20 | 25 | 32 | 40 | 50 |
| Cv | 0.5 | 0.6 | 1.2 | 1.8 | 3.0 | 5.0 |
Material of Main Component.
| Name of component | Material of component |
| Valve body, valve cover | copper alloy |
| Valve seat | H62 |
| Valve flap | H62 |
| Valve rod | H62 |
| O-shaped ring | Ding nitrile rubber |
| Sealing ring | Ding nitrile rubber |
| Membrane | Clamps fabric Ding nitrile rubber |
| Adjusting spring | 60Si2Mn |
| Filter | Stainless steel |
Main External Dimensions.
 |
| DN | External Dimension | |||
| L | H | H1 | D | |
| 15 | 140 | 150 | 40 | 75 |
| 20 | 140 | 190 | 55 | 90 |
| 25 | 150 | 195 | 55 | 90 |
| 32 | 180 | 212 | 55 | 98 |
| 40 | 180 | 215 | 55 | 98 |
| 50 | 200 | 265 | 65 | 120 |