DELUGE PRESSURE REDUCING MODEL 68 DE EL HRV PR-MR
Electrically or Hydraulically Actuated, Anti-Columning, Pressure Reducing, Manual Reset Deluge Valve,Electrically or hydraulically, pilot controlled deluge/pre-action valve, actuated by the pipeline pressure. The valve is closed in its normal, set position and opens when the hydraulic pressure drops in a water pressurized pilot line, releasing a hydraulic relay, or by an electric command. When tripped, the valve regulates to a steady, preset downstream pressure, regardless of upstream pressure or flow rate fluctuations. The valve must be manually reset following automatic actuation. An emergency manual release valve is fitted as standard.
FEATURES & BENEFITS
High pressure (PN25/375psi), high flow deluge systems
Automatic or manual emergency actuation
Hazardous, flammable & explosion classified area fire suppression
Superior design featuring exceptionally low pressure losses at high flow rates
Low lifelong maintenance costs due to straightforward design
Applicable for water, seawater, & foam
Out of box fully assembled & tested valves
Factory trimmed for vertical & horizontal installations without modification
Extensive valve & trim materials selection &corrosion protection coating
CERTIFICATION & COMPLIANCE
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• ANSI FCI 70-2 Class VI seat leakage class
• Fire tested to EN ISO 6182-5:2006 (2”-6” only)
• UL listed under VLFT category
• Lloyd’s Register & ABS approvals
TYPICAL APPLICATIONS
Automatic or Manual Actuated Fire Suppression Systems
Petrochemical, Oil & Gas Installations
Tunnels
Power Generation, Transformer & Transmission Plants
Flammable Storage
Hangars & Airport Terminals
Onshore / Offshore
Mining
OPERATION
The basic control valve [1] used in this deluge system is a direct-sealing elastomeric diaphragm, hydraulically operated control valve engineered specifically for fire protection systems.
In the standby position, the deluge valve is held closed by the upstream water pressure, trapped in the valve’s control chamber. The water pressure enters the control chamber through the priming line ball valve [2], a Y-type strainer [3], a check valve [4] and a T-restrictor [5].
Under fire conditions, the deluge valve opens automatically under any of the following circumstances:
1. A fire alarm control panel (F&G panel) energizes the 2/2-way N.C. solenoid [10] (or de-energizes the coil of a continuously energized ED 100% normally open solenoid for SIL 3-4 rated systems).
2. The pressure in the wet (hydraulically pressurized) pilot line drops, following bursting of one (or more) of the automatic sprinklers.
When this happens, the pressure in the relay valve [9] drops, causing it to open and allowing the water to begin to drain the deluge valve’s control chamber through the pressure reducing pilot [11]. The deluge valve opens instantly, regulating to a steady, preset downstream pressure, regardless of upstream pressure or flow rate fluctuations. This allows water to flow the pipeline and through the open sprinklers over the protected area.
Manual emergency actuation is enabled by opening the emergency manual activation valve [6]. When connected through the pressure reducing pilot (upon request), manual actuation causes the deluge valve to regulate the downstream pressure regardless of upstream pressure or flow rate fluctuations. If unspecified, the manual activation valve drains the water to the atmosphere, allowing the deluge
valve to open fully. When actuated, the deluge valve opens instantly and allows water to flow the pipeline and through the open sprinklers over the protected area.
When the valve trips open, the DMR (manual reset latching device) [12] isolates the relay valve the pressure source. Reconnecting the pressure source to enable the deluge valve to close can only be achieved by pressing the DMR’s knob
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TYPICAL MATERIALS
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(1) Petrochemical, Oil & Gas
(2) Refer to materials selection guidelines, Engineering Data - Materials: Ductile Iron A-536 65-45-12; Cast Steel A-216 WCB; Cast Steel A-352 LCB; Austenitic
Stainless Steel A-351/CF8M; Super Duplex 2507; Nickel-Aluminum-Bronze B-148 UNS C95800
(3) Consult factory
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