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Custom tenders, burners, & live steam locomotive accessories in 1-1/2", 2-1/2" and 3-3/4” scale.


 

1", 1½", 2½" Single Cylinder Steam Water Pumps

1½", 2½" Single Cylinder Steam Air Compressors

1½" Twin Cylinder Steam Water Pumps

 

by Keim Steam Pumps

 

    

 

For 1” Scale Steam Locomotives

Water Pump

  • Fully test operated on steam
  • Proportioned model of a 9 ½” Westinghouse air compressor.
  • Overall height 5” : Maximum body diameter 1.25”
  • Ό-40 MTP male pipe threads on all connections.
  • Working pressure range: 50-120 psi.
  • Displaces 0.57 pints per minute at 120 strokes per minute.
  • Steam bore 3/4”: Water bore 7/16”: Stroke 1”
  • Lubrication: 600W steam cylinder oil or equivalent.
  • One piece shuttle valve design.

 


*note: "KEIM pumps are available using Paypal but require you add an additional 4% to the price to cover the cost to me of the Paypal service.
Check our current Price List


 

For 1 ½” Scale Steam Locomotives

Water Pump

  • Fully test operated on steam

  • Proportioned model of a 9 ½” Westinghouse air compressor.

  • Overall height 6 Ό” : Maximum body diameter 1.73”

  • Ό-40 MTP male pipe threads on all connections.

  • Working pressure range: 50-120 psi.

  • Displaces 1.59 pints per minute at 120 strokes per minute.

  • Steam bore 1 1/8”: Water bore 5/8”: Stroke 1Ό”

  • Lubrication: 600W steam cylinder oil or equivalent.

  • One piece shuttle valve design.


*note: "KEIM pumps are available using Paypal but require you add an additional 4% to the price to cover the cost to me of the Paypal service. 
Check our current Price List


 

For 1 ½” Scale Steam Locomotives

Air Compressor

  • Fully test operated on steam

  • Proportioned model of a 9 ½” Westinghouse air compressor.

  • Working pressure range: 50-120 psi.

  • Lubrication: 600W steam cylinder oil or equivalent.

  • One piece shuttle valve design.


*note: "KEIM pumps are available using Paypal but require you add an additional 4% to the price to cover the cost to me of the Paypal service.
Check our current Price List


 

 

A cold pump should not be started on low steam pressure since this will flood the steam chambers and passageways with water. Instead, a cold pump should be started at higher pressure 75-120 PSI. This model pump has been designed to be resistant to “condensate lockup”. If you suspect that your pump has stalled due to condensate in the head, then it may be necessary to loosen the 4 bolts on the shuttle valve, located on the small circular cylinder heads at the top of the pump. Turn on the steam and let it blow for a few seconds to heat the pump, tighten and restart.

Additional information can be obtained by writing to:    locoparts@embarqmail.com

 

For 2 ½” Scale Steam Locomotives

Water Pump

  • Fully test operated on steam
  • Proportioned model of a 9 ½” Westinghouse air compressor
  • Overall height 9½”: Maximum body diameter 2 5/8”.
  • 5/16-27 MTP (1/16-27 NPT) male pipe threads on all connections
  • Working pressure range: 50-120 psi
  • Displaces 4.1 quarts per minute at 120 strokes per minute
  • Steam bore 1 7/8”: Water bore 1 1/8”: Stroke 2”.
  • Lubrication: 600W steam cylinder oil or equivalent
  • One piece shuttle valve design

 


*note: "KEIM pumps are available using Paypal but require you add an additional 4% to the price to cover the cost to me of the Paypal service. 
Check our current Price List


 

For 2 ½” Scale Steam Locomotives

Air Compressor

  • Fully test operated on steam
  • Proportioned model of a 9 ½” Westinghouse air compressor.
  • Overall height 9 ½”: Maximum body diameter 2 5/8”.
  • 5/16-27 MTP (1/16-27 NPT) male pipe threads on all connections.
  • Working pressure range: 50-120 psi.
  • Displaces 17 SCFH at 55 psi and 8.5 SCFH at 90 psi at120 strokes per minute.
  • Steam bore 1 7/8”: Air bore 1 5/8”: Stroke 1 13/16”.
  • Lubrication: 600W steam cylinder oil or equivalent.
  • One piece shuttle valve design.
  • Left or Right Side Admission available.

 


*note: "KEIM pumps are available using Paypal but require you add an additional 4% to the price to cover the cost to me of the Paypal service. 
Check our current Price List


 

 

The Westinghouse 9 ½” air compressor was the first widely used steam driven appliance applied to steam locomotives after the introduction of Westinghouse’s air brake system in 1869. After the development of the cross compound air compressor, the single cylinder air compressor was retained on many locomotives, especially those delegated to branch line passenger and freight service. The model pump developed today is a proportioned representation of the 9 ½” air compressor. This model was designed as a water pump to satisfy the need for a reliable alternative feedwater supplying device. This pump should not be used as the only source for forcing water into your boiler, but as a supplement to existing methods. This model provides the visual appearance and the rhythmic auditory sensation of a working prototype compressor.

A displacement lubricator is not supplied but is required when plumbing this pump up to a steam line. Operation can be made using compressed air, however, an inline lubrication system is recommended.

 

 

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