The 1 ½'' hydraulic drain safety valve is especially suitable for installation in the drain outlet of an automatic selector valve of a pool sand filter.
Its use prevents water losses when the valve changes its working position and in the event that the electrical power fails and the valve is left in a position in which the pool could be emptied.
- Two connection options: double Ø50 smooth sleeve and double 1 ½" threaded sleeve.
- Working pressure range: 0.2 to 3 kg/cm2.
- Flow range: between 0.5 m3/h and 14 m3/h.
Electrical characteristics of the solenoid:
- Voltage: 24 Vac.
- Consumption: 0.125 A.
It is a hydraulically operated valve in which an elastic membrane closes the passage of water. The larger section existing in the upper chamber with respect to the fluid passage section causes the valve to remain closed when there is fluid pressure upstream, since the 3-way solenoid communicates the pressure from the pump with the upper chamber of the valve. valve. When opening the drain of the upper chamber, either automatically with a signal from the selector valve or by means of the manual selector of the solenoid, ﬂuid access is not allowed and therefore the ﬂuid in the line overcomes the membrane. , causing the valve to open.
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