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Model 73

Eaton Simplex Strainers

10" to 18" Iron or Bronze - Flanged

Photo of a Model 73 simplex basket strainer with straight-through flow.


Seals and Pressure Ratings

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Size Material End Connection Seals Pressure Rating*
10" to 12" Iron Flanged 125# Buna-N® 200 psi (13.8 bar)
10" to 12" Bronze Flanged 150# Buna-N 200 psi (13.8 bar)
14" to 18" Iron Flanged 125# Buna-N 150 psi (10.3 bar)
14" to 18" Bronze Flanged 150# Buna-N 150 psi (10.3 bar)

* @ 100 °F (38 °C)

Graph showing the flow rates for Model 73 strainers.


Simplex pipeline strainers remove damage causing particulate matter from the process media, protecting system components such as flow meters, pumps, and spray nozzles. The particulate matter is captured in the strainer basket. The line is then temporarily shut down and the basket removed for cleaning or replacement.

Large size pipelines with high flow rates require a unique type of basket strainer.  The typical design for smaller size pipelines just won't perform efficiently, the pressure loss would be too high and the baskets too large to remove and clean easily.  These problems have been solved by the Eaton Straight Through Flow design simplex basket strainer.  With this straight through flow, pressure loss is greatly reduced and at the same time, results in a compact strainer that can fit in tight spaces.

The basket that this strainer uses is special as well.  The perforated or mesh straining screen in the basket is convoluted (pleated).  This increase the amount of straining area available while at the same time reducing the overall basket size and weight.  This makes it easy to remove the basket from the strainer housing.  No lifting tackle is required.  And the quick opening cover provides fast and easy access to the basket.  What this means is that the basket of the Model 73 is quick and easy to service, saving considerable time and money over the years.


  • Quick open cover
  • Straight through flow design
  • Low pressure loss
  • Convoluted-basket design
  • Hand removable basket
  • Threaded drain
  • O-ring cover seal
  • Perforated or mesh stainless steel baskets standard

When selecting a pipeline strainer for a large size piping system with high flow rates, be sure to consider all the factors, not just initial pressure loss.  The amount of straining area in the basket is critical to reducing the amount of time between cleanings or change out.  Also remember that if cleaning the basket is difficult, or requires two people to perform, operating costs will continue to be too high.  The design of the Eaton Model 73 Straight Through Simplex Basket Strainer take all these operating parameters into consideration and is the best simplex strainer for higher flow applications in large size pipelines.


  • Basket perforations from 1/32" to ½"
  • Basket mesh from 20 to 400
  • Monel baskets
  • Vent valves
  • Drain valves
  • ¼" NPT taps
  • Magnetic basket inserts
  • Pressure differential gauge and switch connections


  • Wastewater
  • Spray Nozzle Systems
  • Heat Exchanger Protection
  • Cooling Towers
  • Boiler Feed Water
  • Machining Fluids
  • Deep Well injection
  • Descaling Systems
  • Lube Oil Systems
  • Irrigation
  • Paper Coating
  • Refining


CAD drawing showing the dimensions of a Model 73 strainer.

Dimensions and Cv Factors

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Pipe Size Cv Factor* in (mm) Net Weight
lbs (kg)
A B C D F G H Iron Bronze
10 2300 23.00 (584) 11.00 (279) 12.19 (310) 29.00 (737) 47.00 (1194) 19.00 (483) 15/16 (24) 420 (191) 500 (227)
12 3200 27.00 (686) 13.00 (330) 16.75 (425) 38.00 (965) 67.00 (1702) 23.00 (584) 1 (25) 550 (250) 825 (374)
14 5000 31.00 (787) 15.50 (394) 18.75 (476) 45.00 (1143) 77.00 (1956) 17.00 (686) 1 (25) 850 (386) 1150 (522)
16 6000 31.00 (787) 15.50 (394) 18.75 (476) 45.00 (1143) 77.00 (1956) 27.00 (686) 1 (25) 975 (443) 1400 (635)
18 7000 31.00 (787) 15.50 (394) 18.75 (476) 45.00 (1143) 77.00 (1956) 27.00 (686) 1 (25) 1000 (454)

* For water with clean, perforated basket

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