Remote Hydraulic Pneumatic Actuated Monitor Valve
Remote Hydraulic/Pneumatic Actuated Monitor Valve,The valve is closed in its normal, set position and opens when the activation ball valve is turned to the open position or when a remote activation ball valve is turned to the open position. It gradually closes drip tight when the selector valve is turned back to the closed position, reducing the risk of water hammer damage.
FEATURES & BENEFITS
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High pressure (PN25/375psi), high flow 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 fresh or brackish water, seawater & foam
Out of box fully assembled & tested valves
Factory trimmed for vertical or horizontal installations without modification
Extensive valve & trim materials selection and corrosion protection coating
Optional low power electric actuation
MO M Manually Actuated Monitor Valve
The valve is closed in its normal, set position and opens when an activation selector valve is turned to the open position. It gradually closes drip tight when the selector valve is turned back to the closed position, reducing the risk of water hammer damage.
MO RC Remote Hydraulic/Pneumatic Actuated Monitor Valve
The valve is closed in its normal, set position and opens when the activation ball valve is turned to the open position or when a remote activation ball valve is turned to the open position. It gradually closes drip tight when the selector valve is turned back to the closed position, reducing the risk of water hammer damage.
MO EL Electrically Actuated Monitor Valve
The valve is closed in its normal, set position and opens when an activation ball valve is turned to the open position or when a solenoid valve is energized. It gradually closes drip tight when the ball valve is turned back to the closed position or the solenoid valve is de-energized, reducing the risk of water hammer damage
CERTIFICATION & COMPLIANCE
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• ANSI FCI 70-2 Class VI seat leakage class
• Fire tested to EN ISO 6182-5:2006
• Lloyd’s & ABS approvals (Model 68: 2”- 6” only)
TYPICAL APPLICATIONS
Automatic or Manual Actuated Fire Suppression Systems
Petrochemical, Oil & Gas Installations
Power Generation, Transformer & Transmission Plants
Flammable Storage
Hangers
Onshore / Offshore
OPERATION
These hydraulically, pneumatically or electrically actuated monitor valves are designed for local, remote controlled and oscillating monitors. The basic control valve [1] used for these monitor systems is a direct sealing elastomeric diaphragm, hydraulically operated control valve engineered specifically for fire protection systems.
In the standby position, the monitor valve is held closed by the upstream water pressure, trapped in the valve’s control chamber. The water pressure enters the control chamber through a Y-type strainer [2], a check valve [3], a restrictor [4] and a 3-way ball valve [5].
Under fire conditions, the monitor valves will open following these circumstances:
- MOM: The 3-way ball valve is manually opened.
- MORC:
A) A remote 2-way ball valve [6] or a local 3-way ball valve is manually opened.
B) With relay valve [8] - a remote 3-way ball valve or a local 3-way ball valve is manually opened.
- MOEL: A fire alarm control panel (F&G panel) energizes the 3/2-way N.O. solenoid [7] (or de- energizes the coil of a continuously energized ED 100% normally closed solenoid for SIL 3-4 rated systems).
When opened, water begins to drain the monitor valve’s control chamber. The valve opens instantly, allowing water to flow the pipeline and through the monitor and over the protected area. Adding a relay valve (see Option B - MORC) allows remote hydraulic actuation even for long pipelines or changing topography.
A relay valve is also added for large diameter electrically actuated monitor valves (see Electrically Actuated - 6” and larger).
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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) Refer to solenoid selection guideline
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