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.

Installation and Operation Manual

Easytork NAMUR Trip Valve (NTV) IOM

Easytork NAMUR Trip Valve (NTV) to Model 1646 - Externally Ported Supplement 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 = 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




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


Videos

Easytork Control Actuator Overview (with NTV information):



Need More Information? Let Us Help You.

314-266-6880, info@easytork.com, or Live Chat with Customer Service

Send Us a Message (Same Business Day Response):