PRODUCT INFORMATION
Bermad FP 400Y-3DC Electric Pressure Control On-Off Deluge Valve
The BERMAD model 400Y-3DC is an elastomeric, hydraulic, line pressure operated deluge valve, designed specifically for advanced fire protection systems and the latest industry standards.
The 400Y-3DC is activated by a 3-way solenoid valve, by which opening and closing of the deluge valve may be controlled remotely. An integrated pressure-reducing pilot ensures a precise and stable pre-set downstream water pressure. The 400Y-4DC is ideal for open-nozzle systems with a high-pressure water supply.
FEATURES & BENEFITS
- Safety and reliability
- Time-proven, simple, fail-safe actuation
- Single-piece, rugged, elastomeric diaphragm sea
- VRSD technology
- Obstacle-free, uninterrupted flow path
- No mechanical moving parts
- Shuts off on remote command
- Ensures precise, stable downstream water pressure
- Valve position limit switches (optional)
- Designed for fire protection
- Face-to-face length standardized to ISO 5752, EN 558-1
- Meets the requirements of the industry standards
- Quick and easy maintenance
- In-line serviceable
- Fast and easy cover removal
- Swivel mounted drain valves*
TECHNICAL DATA
OPERATION
The BERMAD model 400Y-3DC is held closed by water pressure in the control chamber [1]. Upon release of pressure from the control chamber, the valve opens. Under NORMAL conditions, water pressure is supplied to the control chamber via the priming line [2] restriction orifice [5], and strainer [3], and is then trapped in the control chamber by a check valve [4], manual emergency release [6], and a relay valve (HRV) [7] that is held closed by hydraulic pressure supplied through a three-way solenoid valve [8].
The water pressure trapped in the main valve control chamber holds the diaphragm against the valve seat, sealing it drip-tight and keeping the system pipes dry. Under FIRE conditions, water pressure is released from the control chamber, either with the manual emergency release, or by the HRV opening in response to either the solenoid valve being activated by the fire & gas control system [C] or the by remote release. This opens the 400Y-3DC deluge valve, allowing water to flow into the system piping and to the alarm device [10].
The pressure-control pilot valve [9] senses changes in outlet pressure and, modulates the main valve to maintain the set downstream pressure. When outlet pressure rises above the pre - set pressure value, the pilot valve throttles, enabling pressure to accumulate in the control chamber. This causes the main valve to close further and reduce outlet pressure, keeping the outlet pressure at the set value. When outlet pressure falls, the pilot valve opens wider, releasing pressure from the control chamber. This causes the main valve to open wider and increase outlet pressure.
LITERATURE
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Bermad FP 400Y-3DC Electric Pressure Control On-Off Deluge Valve Brochure |
