Name: Bermad FP-400E-7BM Double Interlock Pre-Action Electric-Electric Release System | Dowdens Pumping & Water Treatment
SKU: FP-400E-7BM
Availability: OutOfStock

Description

Bermad FP 400E-7BM Double Interlock Pre-Action Electric-Electric Release System

The Bermad Model FP 400E-7BM Double Interlock Pre-Action, Electric-Electric Release System 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 double interlock systems include automatic sprinklers attached to a dry sprinkler piping system, along with a supplementary electric detection system and an electric Supervised System of low air pressure in the system piping.

The Double Interlock 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 utilizing an in-line check valve, which creates an intermediate vented chamber using a Normally Open drip-check.

Latch open – Closes only upon local reset
Factory pre-assembled trim – Out-of box-quality
In-line serviceable – Minimal down time
In-line Check Valve – intermediate vented chamber- Anti flooding
One-piece molded elastomeric moving part – No maintenance required

Operation

In the SET position, the line pressure supplied to the main valve’s control chamber via the priming line and through an EasyLock Manual Reset, is trapped by the Easy Lock internal check valve, by a closed Solenoid Valve and by a closed Manual Emergency Release.

The trapped pressure holds the main valve’s diaphragm and plug against the valve seat, sealing it bubble tight. The piping system is filled with supervised low air pressure to ensure all automatic sprinklers are sealed.

An intermediate vented chamber is created by an in-line swing check valve, and a Normally Open drip-check. In the event of FIRE, upon activation of both the electric detection system and the low-air pressure switch, that is activated by the air pressure drop in the system piping due to opened sprinkler head.

The Cross-Zone Releasing control panel triggers the Solenoid Valve to open, water pressure is then released from the main valve’s control chamber. The EasyLock prevents line pressure from entering the control chamber, allowing the pre-action valve to latch open and water to flow into the system piping and to alarm device.