172-65378MA-03 (GP10F PowerTrap) 23 Apr 2019
9
Installation Procedure
Refer to the systems outlined in the “General Description” to select the correct system
and model for the application. Installation, inspection, maintenance, repairs,
disassembly, adjustment and valve opening/closing should be carried out only by
trained maintenance personnel.
(1) Pumped Medium:
Fluids that can be discharged through the PowerTrap are limited to steam condensate,
water and non-flammable, non-toxic fluids with specific gravities 0.85 to 1.0. PowerTraps
that have been constructed for other specific fluids are not limited by this restriction.
(2) Motive Medium Supply Piping:
•
The motive medium supply pipe diameter should be at least 20 mm
(
3
/
4
in).
•
Install a 40-mesh or finer strainer on the PowerTrap motive medium supply pipe,
as close to the PowerTrap as possible, while allowing sufficient space for
maintenance of the strainer. Strainers should be angled in the 3 or 9 o’clock
positions for horizontal installations.
•
The motive medium inlet pressure should be between 0.03 to 1.05 MPaG (5 to 150
psig), and at least 0.05 MPa (7 psi) greater than the system back pressure.
•
Steam, compressed air, nitrogen or other non-flammable, non-toxic fluids may be
used as the motive medium.
•
For closed systems:
Use steam or some other such condensable gas as the
motive medium. Except in special cases, do not use non-condensable gasses
such as air or nitrogen
•
When the motive medium is steam, if the application will require that the equipment
be shut down (non-operating) for periods of 2 months or longer, install piping
connecting the motive medium supply line to the receiver, being sure to install a drip
leg on the motive medium supply line, and a steam trap in the drip leg (between
where it branches to go to the PowerTrap and where it enters the receiver). This
measure is not necessary when the motive medium is compressed air or nitrogen.
(3) Pressure Reducing Valve on the Motive Medium Supply Piping:
•
When the motive medium pressure is greater than the maximum allowed for the
particular PowerTrap model used (see “Specifications”), install a TLV COS/COSR
series pressure reducing valve in order to reduce the motive medium pressure to
the PowerTrap. Use good piping practices when selecting the installation location
for COS/COSR. Be sure to install a safety valve between the pressure reducing
valve and the PowerTrap.
•
When the motive medium pressure is less than the maximum allowed for the
particular PowerTrap model used, if a reducing valve is to be installed to slow the
speed of the flow, the installation of a safety valve is not required.
•
Install the pressure reducing valve as far away from the PowerTrap as possible.
–
When the motive medium pressure is less than 0.5 MPaG (72.5 psig): at least
3 m (10 ft)
–
When the motive medium pressure is 0.5 MPaG or greater (72.5 psig or
greater): at least 3 m + 1 m for every 0.1 MPaG over 0.5 MPaG (10 ft + 1 ft for
every 4.5 psig over 72.5 psig)
