| Brand: | Bermad |
| Category: | Control Valves, Fire Protection Series |
| Size Range: | 40-400mm |
| Connection: | 40-400mm - Flanged |
| Engineering Data: |
Product Description
The BERMAD model 400Y-4D is an elastomeric, hydraulic line-operated deluge valve, designed specifically for advanced fire protection systems and the latest industry standards. The 400Y-4D is controlled by a pneumatic relay valve, typically activated by a decrease in pressure of a pneumatic pilot line. The 400Y-4D can also be operated remotely. The optional valve position indicator can include a limit switch suitable for Fire & Gas monitoring systems. The Bermad 400Y 4D is ideal for use in systems with open nozzles for water or foam discharge and also well suited for use with corrosive media or where freezing temperatures might be experienced.
Features and Benefits
- Safety and reliability
- Time-proven, Simple, fail-safe actuation
- Single-piece, rugged, elastomeric diaphragm seal – VRSD technology
- An obstacle-free, uninterrupted flow path
- No mechanical moving parts
- Shuts off on remote command
- Valve position limit switches (optional)
- Local valve position indicator beacon (optional)
- High performance
- Very high flow efficiency
- Straight-through-flow Y-type body
- Approved for PN25 / 365 psi
- Designed for fire protection
- Face-to-face length standardized to ISO 5752, EN 588-1
- Suitable for corrosive fluids and freezing temperatures
- Meets the requirements of the industry standards
- Quick and easy maintenance
- In-line serviceable
- Fast and easy cover removal
- Swivel-mounted drain valves*
* not including 1½” & 2” valves
Approvals
Additional Options
- Valve position limit switches
- Local valve position indicator beacon
- Sea water compatibility
- Alarm pressure switch
- Drain valve/s inlet/outlet
- Air maintenance device
- For “automatic activation” select BERMAD local or remote reset model
Typical Applications
- Remote control water spray systems
- Foam applications
- Corrosive water supplies
- Freezing Environments
Technical Data
Operation
The BERMAD model 400Y-4D 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] strainer [3] and restriction orifice [5], it is then trapped in the control chamber by a check valve [4], manual emergency release [6], and a relay valve (URV) [7] that is held closed by pneumatic pressure in the dry pilot line [E]. The water pressure trapped in the 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 URV opening in response to a decrease in pneumatic pilot-line pressure. This opens the 400Y-4D deluge valve, allowing water to flow into the system.
System P&ID
Components
1 BERMAD 400Y Deluge Valve
2 Priming Ball Valve
3 Priming Strainer
4 Check Valve
5 Restriction Orifice
6 Manual Emergency Release
7 URV-2 Relay Valve
Optional System Items
ZS Limit Switch Assembly
I Visual Indicator
AMD Air Maintenance Device
Main Valve
Available Sizes and Connection
- 40-400mm - Flanged
- 40-200mm - Grooved
Pressure Rating
- ANSI#150 - 16 bar / 235 psi
- ANSI#300 - 1½” to 10” 25 bar / 365 psi
12” to 16” 20 bar / 300 psi - Grooved - 25 bar / 365 psi
- Threaded – 25 bar / 365 psi
Elastomer
- HTNR - Fabric Reinforced High-Temperature Compound
System Installation
A typical installation of the BERMAD model 400Y-4D features actuation via a pneumatic universal relay valve. When open and fitted with a limit switch the valve can send a feedback signal to a remote valve status monitoring system.
Technical Specifications
Suggested Specifications
The deluge valve shall be UL-listed, 25 bar / 365 psi rated, elastomeric type with a straight-through, Y-type body. The valve shall have an unobstructed flow path without a stem guide or supporting ribs. Valve actuation shall be accomplished by a single-piece, rolling diaphragm bonded with a rugged radial seal disk. The diaphragm assembly shall be the only moving part. The deluge valve shall include a relay pilot valve, a Y-type strainer, a ball drain valve, an automatic drip-check with manual override, 4-inch pressure gauges, and a manual emergency release housed in a stainless steel box. The valve drain socket shall be flanged and have360-degree swivel. The valve shall be equipped with a protective-covered, dual-color, rotational position indicator, readable from 50 meters, and with two limit switches enclosed in a protective switch box. Removing the valve cover for inspection and maintenance shall be in line, and not require removal of the control trim. The deluge valve and its entire control trim shall be supplied pre-assembled and hydraulically tested by a factory certified to ISO 9000 and 9001 standards
Dimensions and Weights
(1) L1 Dimensions are for grooved, threaded and raised face-flanged valves
(2) Leq (Equivalent Pipe Length) refers to turbulent flow in new steel pipe schedule 40, values are given for general consideration only
(3) Dimensions for the trim envelope may vary with specific component positioning
Due to the wide range of options and criteria for correct model selection, pricing and configuration are available on application only.
Please contact us for more information.
