How dose the control valve work A.R.I. Eliptix 30-S

W-30-S | ELIPTIX - Pressure Sustaining Control Valve
The Eliptix Pressure Sustaining Valve model W-30 S is activated by line pressure. The valve is normally closed.
When the line pressure rises above a preset point, the Eliptix W-30 S Pressure Sustaining Valve opens to relieve the excess pressure downstream. When the line pressure drops, the Eliptix W-30 S valve closes.
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