A.R.I. Eliptix R-30 S 2W, Установка, Эксплуатация, Обслуживание, Страница: 10 / 15

R-30 S
2.4. Initial Set-up - The Pressure Sustaining Application
1. The following is a general description of the Pressure Sustaining Application:
This pressure-sustaining automatic control valve is designed to maintain a minimal preset upstream pressure by
releasing excessive pressure to the downstream system.
The Eliptix R- 30 -S valve is a Normally Close Valve (N.C.) that is activated by the line pressure.
When the line upstream pressure rises above the preset point the valve slightly opens to release the excessive
pressure to the downstream system and maintain the upstream pressure at the pre-set level.
When the upstream pressure drops below the setting the valve closes.
Pipeline water flows constantly through the control loop. The pilot senses the upstream pressure through its # 1
port.
When the upstream pressure is higher than the pilot's pressure settings, the pilot decreases the internal pressure
of the control chamber by increasing the water flow through port #
5 , causing the valve's diaphragm to slightly
open and decrease the upstream pressure back to the required settings level.
When the upstream pressure is lower than the pilot's pressure settings, the pilot increases the internal pressure of
the control chamber by decreasing the water flow through port #
5
, causing the valve's diaphragm to slightly close
and decrease the downstream pressure back to the required settings level.
No. Description QTY.
1 Main Valve 1
2 Finger Filter 1
3 Ball Valve, 2 -Way, N.O. 2
4
P-
26
S, Pressure sustaining / relief pilot valve,
2
-way
1
5 Pressure Gauge 1