PRODUCT INFORMATION

Bermad FP 400E-7M Single-Interlock Preaction Electric-Electric Release System

The Bermad Model 400E-7M Single-Interlock Preaction Release System is suitable for use in systems requiring that water be kept out of the sprinkler piping until an electric detecting device has been activated.

Electric single-interlock systems include automatic sprinklers attached to a dry sprinkler piping system, with a supplementary electric detection system and an Electric Supervised System of air pressure in the system piping, installed in the same area.

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 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]. When sprinklers are activated, the lower air pressure is detected by an electric air pressure monitor, which activates the alarm, while the main valve remains closed. In the event of FIRE, an electric detection system [E], working through a control panel [C], triggers the Solenoid Valve to open. Pressure is then released from the main valve’s control chamber through the opened Solenoid Valve (or the Manual Emergency Release). 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.

LITERATURE

Bermad FP 400E-7M Single-Interlock Preaction Electric-Electric Release System Brochure