Viking Pump TSM641.2 Eaton Model 50 Duplex Basket Strainer, Sizes 5 - 8 - Manual (Page 2)

2
Model 50 Duplex Basket Strainer, Sizes 5
” - 8”
Installation
Position the strainer in the line so that the fluid enters
the connection marked inlet. Be sure sufficient headroom
is provided for easy removal of cover and baskets.
CAUTION: Lift strainers with slings under
the inlet and outlet connections. DO NOT
lift the strainer by the jack bonnet located
on top of the plug
.
Support the strainer in the line as follows:
Support on concrete or steel pads.
Connect the strainer to the line. Use same type flange
faces. For example, DO NOT bolt raised face flanges to
iron flat face flanges. Iron flanges must be flat face with full
face gaskets.
Cast strainers are subject to face to face variations due
to shrinkage and machining tolerances. Prefabricated piping
systems must allow adjustment at the strainer connections.
For threaded strainers, use standard pipe practice when
making connections.
Installation, Continued
Be sure flange gaskets are in place and fasteners are tight.
It is recommended that the drain plugs be re- moved and
drain valves be installed at the bot- tom of each basket
chamber as shown in Figure
1. A pressure equalizer, as shown in Figure 2, should be
installed when the operating pressure exceeds 50 psi. This
pressure equalizer greatly reduces the force required to
transfer the position of the strainer valve plug.
To insure proper valve plug seating, the clean-out plug at
the bottom of the valve plug chamber should be
periodically removed and the accumulated solids and debris
washed out.
CAUTION: A vent is required when fluids
other than water and with temperatures in
excess of 120°F are to be handled by
the strainer. The vent must be piped to a
safe discharge point to protect the operator (see Figure 3).
Wear protective clothing which includes gloves, vests, and
goggles when handling dangerous fluids
.
Pressure gauges near the strainer inlet and outlet are
recommended. Cleaning frequency can be determined by
the pressure drop across the strainer.