172-65188M-08 (
M-COS 3,16,21
Pressure Reducing Valve) 24 Jun 2015
16
Piping example:
:
10 mm Pressure Sensing Line
(with a slightly falling pitch towards
the sensing point)
M-COS
1 m or 15 d,
whichever is
larger
Valve
15 d or more
Steam-using
Equipment
d = pipe diameter
15. Internal sensing for North American models
All models except North American models are factory prepared for internal sensing.
When internal pressure sensing is required for North American models, please
contact the nearest TLV representative to request both a connecting tube, which
must be installed in place of the blind pin, and a threaded secondary pressure
sensing plug.* Follow the connecting tube installation procedure shown below:
1) Loosen and remove the four (4) bolts that attach the
pilot body to the main body (15 – 50 mm) or the pilot
cover (65 – 100 mm), and remove the pilot body.
2) Install the connecting tube by first removing the
blind pin from the secondary side of the main body
or pilot cover and then substituting the connecting tube.
3) Re-install the pilot body and fasten the four (4) bolts evenly.
Consult page 31 in this manual for torque requirements of these bolts.
4) If a secondary pressure sensing pipe has previously been installed, remove it and
be certain to install the threaded secondary pressure sensing line plug in its place.
*Internal sensing should not be used when 15 mm and 20 mm M-COS-16 will be
used below 0.3 MPaG and 0.1 MPaG respectively, and below 50% of primary
pressure.
Blind Pin
Connecting Tube
