PRODUCT INFORMATION

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.

FEATURES & BENEFITS

• 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

TECHINCAL DATA

OPERATION

In the SET position, the line pressure supplied to the main valve’s control chamber [1] via the priming line [2] and through an EasyLock Manual Reset [3], is trapped by the Easy Lock internal check valve, by a closed Solenoid Valve [4] and by a closed Manual Emergency Release [5]. The trapped pressure holds the main valve’s diaphragm and plug against the valve seat [6], sealing it bubble tight. The piping system is filled with supervised low air pressure to ensure all automatic sprinklers [F] are sealed. An intermediate vented chamber is created by an in-line swing check valve [7], and a Normally Open drip-check [8]. In the event of FIRE, upon activation of both the electric detection system (E) and the low-air pressure switch [9], that is activated by the air pressure drop in the system piping due to opened sprinkler head (F). The Cross-Zone Releasing control panel [C] 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 [10]

LITERATURE

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