Clark Cooper EH40-04 Посібник з монтажу та експлуатації

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Installation and Operation Manual

EH40, Version 2017.1

Last Updated: 6/26/2017

Installation:

The EH40-04, regardless of voltage, may be

mounted in any orientation (sideways, upside

down, etc.) and will still function per the catalog

specifications. AC powered EH40-08's may also be

mounted in any orientation. However, DC powered

EH40-08's must be mounted vertically with the coil

on top in order to open against the catalog

differential pressures.

Pipelines or tubing needs to be adequately

supported to prevent strains on the valve body

connections.

The ¼-18 NPT or ½-14 NPT valve body threads per ANSI/ASME B1.20.1 require a sealant, such as PTFE

tape, by design. Follow the sealant manufacturer installation instructions. Some general guidelines are:



Use only 2 to 3 wraps (max) of PTFE tape around the external thread.



Looking at the external thread, wrap the PTFE tape clockwise. When the threads are

turned together, this will eliminate friction trying to unravel the tape.



Start the tape at least one thread away from the end to eliminate any change of a

thread getting in the flow path.



Do not combine thread sealant and PTFE tape.



Do not back off a connection simply to adjust orientation. This may destroy the seal.

There is surprisingly no set specification that dictates exact torque values for taper threads. A

reputable fitting manufacturer goes as far as to make the statement below.

941 Hamilton avenue

Roebling, nj 08554

www.ClarkCooper.com

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