EHORDM-820-NF2-3W Valve

Overview

The Metrex Model EHORDM-820-NF2-3W is an 8″ 3-way, electric actuated seawater regulating valve typically used to modulate the cooling water through a condenser in response to a control signal from the condenser. Refrigerant head pressure is maintained over a wide range of operating conditions for a maximum system operating efficiency.

Specifications

8″ NPS

Seawater service

115 VAC, 60Hz, 1 PH, 2.5A

Shock Qualified (MIL-S-901D)

Vibration Qualified (MIL-STD-167)

Cv = 800 or 550

Manual Override

MIL-PRF-20042 Flanges (250 Pound)

3-Way mixing configuration

220 PSI water pressure rating

330 PSI proof pressure

Features

Valves must be mounted with the valve stem vertical in a horizontal flow line.
The hydraulic unit is bi-directional and incorporates load check valves that prevent drifting after actuation to maintain precise positioning. Actuation in the open direction acts to retract the hydraulic cylinder while actuation in the closed direction acts to extend the cylinder. A bi-directional differential pressure switch acts as a travel limit switch in both directions of stem travel. It cuts power on an increase in pressure differential between the cylinder high side and low side for each direction of travel when the limit of travel is reached.
The hydraulic unit operates at a nearly constant displacement rate in both directions independent of load and the hydraulic cylinder is sized for fullstroke times of approximately 20 seconds in either direction. A hand pump with handle is provided for manual operation.

Additional Information

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