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Thompson Strainers

Thompson Strainers

The Thompson Strainer is a patented and truly unique stainless steel strainer. All models operate with less than 1 pressure PSI lost at maximum flow, when clean. The Thompson Strainer's internal flow patterns are responsible for making this unique product so effective. As liquid flows up through the internal riser pipe and deflects off of the inner surface of the conical shaped screen, heavier particles are forced downward, away from the screen, into the large debris reservoir. Thompson Strainers can be flushed while on-line and in service. Settled solids are easily removed by purging the debris through the flush port.

Note: Standard mesh options are available, ranging
from course perforated screens down to 50 micron
(50 x 250 mesh).

Filtration Equipment

Pressure Loss Chart

Click chart to enlarge

Advantages:

  • Stainless steel construction
  • Low pressure loss
  • Patented, low maintenance design
  • Space saving profile
  • 2" x 10" Connections available
  • Flow rates of up to 2,000 GPM
Thompson Strainer Cutaway

Click diagram to enlarge


Thompson Strainer Pressure Differential Alarm

Pressure Differential Alarm (PDA)
The PDA package continuously monitors the inlet and outlet system pressure. When the filter becomes dirty, a pressure differential switch-gauge triggers an audible siren and visual flashing alarm. These alarms are intended to alert maintenance personnel that the strainer screen needs to be removed and cleaned. The system comes with a set of dry contacts that can be used for remote monitoring of the alarm.

Thompson Strainer Automatic TimerAutomatic Timer Flush (ATF-EA-1.5)
The ATF-EA-1.5 valve package ensures that the accumulated solids in the debris reservoir will automatically be flushed from the system. The power supply and timer controls for the valve package are housed inside a watertight control box which is attached to the valve. The valve also comes with a manual flush control switch that can be used to manually flush the stainer and/or drain the strainer before the screen is removed.

Thompson Strainer Specifications
Model No. Lid Closure Type Inlet/Outlet
Size & Type
Screen Surface Area
(SQ. CM.)
Flush Port Size Maximum Flow* Maximum Pressure Rating Dimensions (max.) W x H
MLS-2 Clamp 2"/NPT 787 1" 100 GPM 125 PSI 9 11/32" x 16 3/8"
MLS-3 Clamp 3"/NPT 1,290 1" 200 GPM 125 PSI 12 11/16" x 24 7/8"
MLS-4C Clamp 4"/Flanged 2,368 2" 350 GPM 125 PSI 19 1/4" x 27 1/4"
MLS-4B Bolted 4"/Flanged 2,368 2" 350 GPM 150 PSI 19 1/4" x 25 7/8"
MLS-6 Bolted 6"/Flanged 4,806 2" 750 GPM 150 PSI 24 1/2" x 38"
MLS-8 Bolted 8"/Flanged 10,058 2" 1300 GPM 150 PSI 31 3/8" x 49 1/16"
MLS-10 Bolted 10"/Flanged 15,703 2" 2000 GPM 150 PSI 39 3/4" x 60 1/4"

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