Electric Pressure Control Deluge Valve with Local Reset PC3-FP-400Y-2MC
| Benefits and Featuresn Safety and reliability ❑ Time proven, simple, fail-safe actuation ❑ Single piece, rugged elastomeric diaphragm seal - VRSD technology ❑ Obstacle-free, uninterrupted flow path ❑ No mechanical moving parts ❑ Latches open: remains open until reset locally ❑ Ensures precise, stable downstream water pressure n High performance ❑ Very high flow efficiency ❑ Straight through flow Y- type body ❑ Approved for PN25 / 365 psi n Specifically-designed for fire protection ❑ Face-to-face length standardized to ISO 5752, EN 558-1 ❑ Meets the requirements of the industry standards n Quick and easy maintenance ❑ In-line serviceable ❑ Fast and easy cover removal ❑ Swivel mounted drain valves* * not including 1ó” & 2” valves Additional Featuresn Valve position limit switches n Alarm pressure switch n Sea water compatibility n Drain valve/s inlet/outlet |
The BERMAD model PC3-FP-400Y-2MC is an elastomeric, hydraulic line pressure operated deluge valve. Designed specifically for advanced fire protection systems and the latest industry standards. The 400Y-2MC is activated by a 3-Way solenoid valve, that actuates a latching relay valve opening the main valve. Once open, the valve will not close until locally reset. An integral pressure reducing pilot ensures a stable and precise preset downstream system water pressure. The optional valve position indicator can include a limit switch suitable for Fire & Gas monitoring systems. The PC3-FP-400Y-2MC is ideal for open-nozzle systems with a high-pressure water supply and is available with electric components to suit any hazardous location.
The BERMAD model PC3-FP-400Y-2MC 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-M( [7] that is held closed by water 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 URV-M opening in response to the solenoid valve being activated by the fire & gas control system [C]. This latches the PC3-FP-400Y-2MC deluge valve open, allowing water to flow into the system piping and to the alarm device. The pressure-reducing pilot valve [10] senses changes in outlet pressure and, modulates the main valve to maintain the set downstream pressure. When outlet pressure rises above the setting of the pilot spring force, the pilot valve throttles, enabling pressure to accumulate in the control chamber, this causes the main valve to close further and reduce outlet pressure to the set pressure. When outlet pressure falls, the pilot valve opens wider, releasing pressure from the control chamber. This causes the main valve to immediately open wider and increase outlet pressure to maintain the set pressure.
System Installation
A typical installation of the BERMAD model PC3-FP-400Y-2MC features automatic actuation via a universal relay valve and a three-way solenoid valve, triggered by a signal from a fire & gas control system or an on-site emergency pushbutton. A pressure reducing pilot within the control trim, ensures a precise and stable set downstream pressure. When fitted with a limit switch the valve can send a feedback signal to a remote valve position monitoring system.
Suggested Specifications
The deluge valve shall be a UL-listed, 25-bar/365-psi rated, elastomeric type with a straight-through, Y-type-body. The valve shall have an unobstructed flow path, with no stem guide or supporting ribs. The valve shall be coated internally and externally creating a corrosion barrier with UV protection. 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 latching relay pilot valve, a 3-way solenoid valve approved for 25 bar/365 psi working pressure, with a tolerance of 35% below the rated voltage, a pressure reducing 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 have a 360-degree swivel. The valve shall be equipped with two limit switches. Removing the valve cover for inspection and maintenance shall be in line and shall not require removing 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.
