Easytork Namur Trip Valve (NTV)

Easytork Namur Trip Valve (NTV)

Engineered for actuators with on-board reservoirs


ECAs and EVAs will work with any positioner in the market. Regardless of double-acting or fail-safe setup, user must use a double-acting positioner. Installing or not installing Easytork’s NAMUR Trip Valve (“NTV”) with a double-acting positioner determines what function (fail-safe, in CW or CCW, or double-acting) the actuator has. Any 4-20ma or 3-15 psi positioner in the market works with the system.

Technical Data

NTV Overview


Installation and Operation Manual

NTV IOM



Installation and Operation Manual

NTV IOM


Installation Procedures

The illustrations below are with Siemens PS2, but the fundamental installation principal applies to any brand of double-acting positioner.

Piping Instructions:





Piping Legend:



Desired Configuration:
Loss of air = CCW (fail-open)
Increasing signal = CW (close)
Decreasing / no signal = CCW (open)

Piping Instructions:
Red airline = NTV port 4
Blue airline = NTV port 3




Desired Configuration:
Loss of air = CCW (fail-open)
Increasing signal = CCW (open)
Decreasing / no signal = CW (close)

Piping Instructions:
Red airline = NTV port 3
Blue airline = NTV port 4




Desired Configuration:
Loss of air = CW (fail-close)
Increasing signal = CCW (open)
Decreasing / no signal = CW (close)

Piping Instructions:
Red airline = NTV port 4
Blue airline = NTV port 3




Desired Configuration:
Loss of air = CW (fail-close)
Increasing signal = CW (close)
Decreasing / no signal = CCW (open)

Piping Instructions:
Red airline = NTV port 3
Blue airline = NTV port 4


Videos

Easytork Control Actuator Overview (with NTV information):



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