Zero Pressure, Hydraulically Controlled, Foam Concentrate Valve PC5-FC-700E-5X-BO
| Features and Benefits■ Double chambered Actuation – Zero Line Pressure ■ Obstacle free full bore – Uncompromising reliability ■ Fail Safe Close – Safe operation and drip tight sealing ■ In line serviceable – Minimum downtime and easy maintenance ■ Simultaneous opening with the main deluge valve – immediate Foam supply ■ 3-Way control – No continual release of control fluid ■ Valve activation with Water or Air pilot line pressure Optional Features■ Valve position indicator ■ Electric indication (Limit Switch) |
The BERMAD PC5-FC-700E-5X-BO is a Double Chambered hydraulically powered Foam-concentrate valve, controlled by a 3-Way hydraulic relay valve. The PC5-FC-700E-5X-BO is hydraulically actuated by existing fire water pressure, independent from the foam pressure enabling functionality at very low pressure or even non-pressurized foam concentrate. This makes it highly suited for installation at the discharge of atmospheric tanks. The hydraulic opening command can be shared with that of a main deluge valve, enabling a simple and perfect opening synchronization of both valves. This assures an immediate foam solution supply to the system. The valve is “Fail Safe Close” and designed with an “Over the Seat” flow direction to ensure drip-tight sealing and safe operation. The BERMAD PC5-FC-700E-5X-BO replaces mechanically actuated valves or pilot-operated solenoid valves, providing safer operation for modern foam systems, assuring maximum reliability of the entire fire-fighting system.
Operation
The BERMAD PC5-FC-700E-3X-BO is a “Y” pattern, Fail Safe Close, diaphragm actuated, double chambered, water pressure driven hydraulic valve, that requires existing firewater for a priming pressure source for valve activation. In the set position: The control chamber of the 3-Way relay valve [5] is pressurized. The priming line [1] constantly supplies pressure to the valve’s lower chamber [2] by way of the Y filter [8] and the 2-Way priming line ball valve [7]. Pressure to the upper chamber is provided through a manual override valve [4] and via the pressurized 3-Way relay valve valve. The check valve [6] retains pressure in the upper control chamber ensuring that the main valve remains with a drip tight seal until activated. In the operating position: The control chamber of the 3-Way relay valve is de pressurized. The valve upper chamber is vented while the lower chamber remains pressurized, this imbalance of hydraulic forces, lifts the valve seal disc assembly to open the valve and allow fluid to flow to the system. Alternatively the valve may be opened by use of the 3-Way manual override valve [4]
Engineer Specifications
■ The valve shall be a hydraulically operated “Y” pattern body with integral unitized double chamber actuator.
■ Valve actuation shall be accomplished by one moving assembly, which shall include the diaphragm assembly, a flat seal disk and a stainless steel stem.
■ All valve body and internal parts shall be of stainless steel and have an unobstructed flow path, with no stem guide or supporting ribs.
■ The valve actuator shall be removable for quick in-line service enabling all necessary inspection and servicing.
■ The control trim shall consist of stainless steel 316 tubing, fittings and accessories, including stainless steel HRV-3 (3-Way Relay Valve), Y strainer, 3-Way Manual Override Valve and check valve.
■ The control Trim shall be supplied as an assembly, pre-assembled and hydraulically tested at an ISO 9000 and 9001 certified factory.
■ The Hydraulically Operated Valve shall open and close in response to the dry pilot line hydraulic pressure status.
Remote Controlled Monitor System
(with Foam Concentrate Injection)
System Components
1 - BERMAD Deluge valve
2 - BERMAD PC5-FC-700E-5X-BO Foam Concentrate Valve
3 - Remote Controlled Monitor
4 - Control Panel
