Eaton 50 VCP-WL Instruction manual

Model 50 Duplex Basket Strainer, Sizes 5” - 8”
Read all instructions before installation or operation of equipment.
Failure to comply with these instructions could result in bodily injury or property damage.
Table of Contents
Introduction …………………………………………………….. 1
Receiving, Handling & Inspection …………………….. 1
Installation ……………………………………………….………. 2
Operation …………………………………………………………. 3
Start Up ……………………………………………………………. 3
Basket Removal/Replacement ………………………….. 4
Basket Cleaning ………………………………………………… 4
Recommended Spare Parts …………….................... 4
Exploded Parts Drawing ……………………………………. 5
Introduction
A duplex strainer is a device installed in a pipe- line to remove dirt
and other unwanted debris from fluids. Straining is accomplished
by directing the fluid through sized openings in a basket.
Duplex strainers are installed where fluid flow cannot be
interrupted while the basket is re- moved for cleaning. Duplex
strainers are designed for pressure and suction installations.
For additional information regarding Duplex Basket Strainers visit
our website at: www.eaton.com/filtration
Receiving, Handling and Inspection
Inspect strainer after unpacking for damage incurred during transit.
Report any damage to the carrier immediately. If the strainer is not
to be installed immediately, store indoors in a clean, dry
environment.
Remove preservative with solvent dampened cloths. Exercise care when using solvent. Check to be sure the rated pressure and
temperature on the strainer name plate is not less than the maxi- mum pressure and temperature of the installation. The rated
pressure shown on the name plate is the maximum pressure, including shock pressure, at which the strainer may be operated.
1 IOM 50 5-8 08/13

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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.

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Model 50 Duplex Basket Strainer, Sizes 5” - 8”
Operation
The chamber in operation can be determined by observing
the position of the valve handle. The
handle is on the same side of the center line as
the chamber in operation (see Figure 4).
Start up
Open both chamber vents, if strainer is so equipped (see
figure 3), to expel air from the
strainer.
Position valve handle in the center to allow both chambers
to fill and close the equalizer valve, if strainer is so
equipped (see figure 2).
Slowly allow fluid to enter strainer by opening OUTLET
valve first, then followed by opening the INLET valve.
CAUTION: Start system GRADUALLY. This
eliminates sudden shock to strainer and
other equipment in the line.
Close vents when air is expelled and fluid begins to leak out
vent.
Move valve handle to extreme travel position over one
clean basket. DO NOT leave valve handle in the center
position as both baskets will become dirty. This would
require interrupting flow to clean them.
Seat valve plug lightly by turning valve yoke clockwise. To
avoid excessive stresses, stuck valve plugs etc. when
operating at temperatures above 120°F use only
minimum hand pressure on the valve yoke to position the
valve plug against the seat.
The valve plug should be firmly seated during basket
cleaning to prevent excessive leakage into the opened
chamber.
Start up, Continued
NOTE: The strainer valve plug is intended to
divert flow. It is not designed to provide
absolute tight shut off. Product design
criteria requires valve plug seepage to be low
enough to provide time for basket cleaning only.
Shut Down
Tightly close pipeline valve on inlet and outlet connections
of the strainer. Open vents, (see
figure 3), to relieve liquid pressure in the strainer.
CAUTION: DO NOT loosen body covers
while there is liquid or air flow from the
vent.
Switching Flow
Without Equalizer
Turn lifting handle counterclockwise to lift valve plug
and position turning handle (to extreme travel position)
over clean basket. Seat valve plug slightly by turning
lifting handle clockwise.
With Equalizer
Open pressure equalizer valve and turn lifting handle
counterclockwise to lift valve plug.
Position turning handle (to extreme travel posi- tion) over
clean basket and seat valve plug tightly by turning lifting
handle clockwise.
Close equalizer valves.
Basket Removal (Yoke Cover)
Transfer flow from dirty to clean chamber (see Switching
Flow) and open vents, and/or drain valve to relieve liquid
pressure in dirty chamber.
When pressure is relieved, loosen, but do not remove, T-
bolt. Then drain fluid away through the chamber drain
connection to a level below the basket seat. This
prevents by-pass of dirty fluids.
Swing yoke away from body yoke stud and clear of body
cover. Remove cover.
Remove dirty basket.

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Model 50 Duplex Basket Strainer, Sizes 5” - 8”
Basket Replacement (Yoke Cover)
Place new or clean basket squarely on basket seat and be
sure the basket handle is sufficiently
high to be compressed by the strainer body
cover.
Inspect body cover O-ring and seal surface. Clean seat
and replace body cover O-ring as necessary.
Always keep spare O-ring gaskets in storage. Replace body
cover, making sure body cover is centered in body opening.
If strainer is on suction service, fill basket chamber from
outside source before installing body cover.
Swing yoke into position over body cover and onto
yoke stud, making sure yoke is level with body. If not,
adjust both studs to level the yoke.
Hand tighten yoke studs and tighten the center T- bolt.
Make sure vent is open, if strainer is so equipped, (see Fig
3); close drain valve and refill basket chamber with fluid as
follows:
Lift valve plug and rotate valve plug handle ap-
proximately 20° towards center position until all air is
vented from the basket chamber.
Close vents and return valve plug handle to extreme
position and reseat tightly.
With Equalizer
Open pressure equalizing valve. Close vent when air is
expelled. Close pressure equalizing valves.
Basket Cleaning
When to Clean
Clean baskets when there is a 5 PSI increase in the
pressure loss across the strainer
CAUTION: To prevent damage to the
baskets, DO NOT permit strainer pressure
differential between inlet and outlet
connections to exceed 20 PSI.
When to Clean, Continued
During shut down for a temporary period, drain fluid
and clean baskets.
How to Clean
Invert basket and wash out debris by directing a stream of air
or water against the basket exterior. Follow manufacturer’s
instructions when using a solvent to clean the baskets.
NOTE: Do not allow basket contents to dry
as this will make cleaning most difficult.
Inspect baskets at each cleaning for holes or tears, replace
as required. Always keep spare baskets in stock.
Shutdown Periods
During shutdown periods: Remove valve
plug from strainer.
Apply a heavy coat of grease to both the valve plug and
the plug cavity in the strainer body.
Replace valve plug and its cover. Do not seat valve plug
until strainer is again placed into service.
Recommended Spare Parts
1 Eaton Replacement Basket
1 Eaton Replacement Gasket
When ordering spare parts specify all nameplate data as
well as the description and quantity of parts.
Always use genuine Eaton replacement parts for
guaranteed fit and performance.
Visit our web site, www.eaton.com/filtration for
information about the different types of Eaton Duplex
Basket Strainers.

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Model 50 Duplex Basket Strainer, Sizes 5” - 8”
EXPLODED
VIEW

6
Model 50 Duplex Basket Strainer, Sizes 5” - 8”
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WARRANTY
All products manufactured by Seller are warranted against defects in material and
workmanship under normal use and service for which such products were designed for a period
of eighteen (18) months after shipment from our factory or twelve (12) months after start-up,
whichever comes first. OUR SOLE OBLIGATION UNDER THIS WARRANTY IS TO REPAIR OR
REPLACE, AT OUR OPTION, ANY PRODUCT OR ANY PART OR PARTS THEREOF FOUND TO BE
DEFECTIVE. SELLER MAKES NO OTHER REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. WE SHALL NOT BE LIABLE FOR CARTAGE, LABOR,
CONSEQUENTIAL DAMAGES OR CONTINGENT LIABILITIES. OUR MAXIMUM LIABILITY SHALL NOT
IN ANY EVENT EXCEED THE CONTRACT PRICE FOR THE PRODUCT.