A.R.I. Eliptix R-20 RM 3W, Установка, Эксплуатация, Обслуживание, Страница: 10 / 15

IOM
R-20 RM
10
2.4. Initial Set-up - The Pressure Reducing Application
1. The following is a general description of the Pressure Reducing Application:
This pressure-reducing valve is an automatic control valve designed to reduce a higher upstream pressure to a
preset lower downstream pressure, and to maintain this constant pressure regardless of flow-rate or upstream
pressure fluctuations.
The pilot senses the downstream pressure through its # 1 port.
When the downstream pressure is higher than the pilot's pressure settings, the pilot increases the internal
pressure of the control chamber by letting water enter the control chamber through port #
4 , causing the valve's
diaphragm to slightly close and decrease the downstream pressure back to the required settings level.
When the downstream pressure is lower than the pilot's pressure settings, the pilot decreases the internal
pressure of the control chamber by releasing water out to the atmosphere through port #
2 , causing the valve's
diaphragm to slightly open and increase the downstream pressure back to the required settings level.
No. Description QTY.
1 Main Valve 1
2 Finger filter 1
3 Manual Selector, ball valve, 3-Way 1
4 Multipurpose pilot valve, 3-way 1