Manually Actuated Monitor Valve 44 68 77 MO EL

Product code: 44 68 77 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.

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FEATURES & BENEFITS

Manually Actuated Monitor Valve 44 68 77 MO EL

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

Manually Actuated Monitor Valve 44 68 77 MO EL

• 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).

Manually Actuated Monitor Valve 44 68 77 MO EL

Manually Actuated Monitor Valve 44 68 77 MO EL

TYPICAL MATERIALS

Manually Actuated Monitor Valve 44 68 77 MO EL

(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 guidelines

Manually Actuated Monitor Valve 44 68 77 MO EL

 

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