790-M – Burst Control Valve


  • Zone shut off at burst
  • “Older” burst susceptible networks
  • Outlets from reservoir at earthquake risk
  • Vulnerable network infrastructure facilities
  • Networks at risk of mechanical damage


The Model 790-M Burst Control Valve is a hydraulically operated, diaphragm actuated control valve that—upon sensing flow in excess of setting—shuts off and locks drip tight until it is manually reset.

As long as the flow is lower than the setting, the valve remains fully open, minimizing head loss.

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