BERMAD > Products > Deluge Valves > Pre-Action & Dry Pipe > FP-400Y-7PM

Double Interlock Preaction System Pneumatic Pneumatic Release

FP-400Y-7PM

400Y Series

Fire Protection

The BERMAD model 400Y-7PM utilizes an elastomeric deluge valve with unique Vulcanized Radial Seal Disk (VRSD) technology, designed specifically for advanced fire protection systems and the latest industry standards.
The Double Interlock Preaction is suitable for use in systems requiring that water be kept out of the sprinkler piping until two fire detection devices have simultaneously reacted.
Pneumatic-Pneumatic Double interlock systems include automatic sprinklers attached to a supervised dry sprinkler piping system and a supplementary pneumatic pilot detection line.
The 400Y-7PM admits water into the sprinkler system piping only when there is a simultaneous loss of pneumatic pressure in both the pneumatic pilot detection line and the system piping pneumatic pressure.
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.

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Safety and reliability
- Time proven, simple design with a fail safe actuation
- Single piece, rugged elastomeric diaphragm seal - VRSD technology
- Obstacle-free, uninterrupted flow path
- No mechanical moving parts
High performance
- Very high flow efficiency
- Efficient Straight through flow
- Approved for PN25 / 365 psi
Quick and easy maintenance
- In-line serviceable
- Fast and easy cover removal
- Swivel mounted drain valves (for valves 3" and larger)