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Double Interlock Pre-Action Valve Electric-Electric Release System FP-400Y-7BM

The BERMAD Model FP 400Y 7BM utilizes an elastomeric deluge valve, designed for advanced fire protection systems and the latest industry standards. The Double Interlock Pre-Action is suitable for use in systems requiring that water be kept out of the sprinkler piping until an electric detecting device and a sprinkler have both been activated. Electric-Electric double interlock systems include automatic sprinklers attached to a dry sprinkler piping system with a low air pressure switch, along with a supplementary electric detection system which are both wired to a Cross-Zone releasing control panel. Model FP 400Y-7BM Pre-Action System admits water into the sprinkler piping only when both the detection device and the supervised systems simultaneously signal the control panel to trigger the solenoid valve. An anti-flooding feature is provided by using an in-line check valve, which creates an intermediate vented chamber using a Normally Open drip-check. As an option the 400Y 7BM features a visual quarter turn valve position indicator, available with limit switches for remote valve position monitoring.

Product Features & Benefits
  • Safety and reliability

-Time-proven, simple, fail-safe actuation
-Single-piece, rugged, elastomeric diaphragm seal – VRSD technology
-Intermediate anti-flooding chamber
-Obstacle-free, uninterrupted flow path
-No mechanical moving parts

  • High performance

-Very high flow efficiency
-Straight through flow Y-type body
-Approved for PN20 / 300psi

  • Quick and easy maintenance

-In-line serviceable
-Quick and easy cover removal
-Swivel mounted drain valves*

* not including 2” valves

Typical Product Applications

Typical Applications

  • Water sensitive material storage
  • Freezing conditions
  • Computer and electronics rooms
  • Libraries / museums & archives


System Installation

A typical installation of the BERMAD model 400Y-7BM features automatic actuation via a solenoid valve and crosszone releasing control panel.

Actuation occurs only when the control panel receives simultaneous electric signals from an electric fire-detection system and a low pressure sensing switch/relay valve.

When fitted with a limit switch, the valve can send a feedback signal to the remote valve position monitoring system.

An inline check valve and drip-check valve create an intermediate vented chamber to ensure against flooding when the valve is closed.