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Now In: OTC ToolsOTC Hydraulic Tools → OTC Flow Block with Loading Valve, 100 GPM - 4291
OTC Flow Block with Loading Valve, 100 GPM - 4291

OTC Flow Block with Loading Valve, 100 GPM - 4291

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OTC Flow Block with Loading Valve, 100 GPM - 4291

OTC Tools
SKU:    OTC-4291
Regular Price: $1,941.96
 On Sale For: $1,877.36 
or 3 payments of $625.79 details

For remote testing the 4291 utilizes an axial turbine and a magnetic sensing head to produce pulse outputs that can be read by a flow meter display.  The block has a pressure balanced poppet to allow for low effort adjustment of loading.  It can measure flow in either direction and it has ports for pressure or temperature sensors.  In the event of an overpressure situation, the replaceable burst discs rupture and allow for internal bypass of the oil without external spillage.


  • Remotely tests hydraulic oil circuits on your machinery with high accuracy
  • Knob on block allows for pressure loading/restriction
  • For use with the OTC 4292 Hydraulic Flow Measurement Digital Readout and OTC 573295 Long Cable and Hose Set or OTC 573296 Short Cable
  • Included in the OTC 4285 Hydraulic Flow Measurement Kit and OTC 4294 Deluxe Hydraulic Flow Set
  • Measures flow from 2 to 100 gpm
  • Pressure range up to 6,000 psi
  • Flow Accuracy to +/- 1% of indicated value
  • Pressure accuracy of +/- 1.6% of full scale
  • Accommodates bi-directional flow measurement
  • Port is 1-5/16” -12UN #16 SAE ORB
  • Aluminum and steel construction with Viton seals

Product Dimensions: 

  • 8.75 × 7.125 × 6 in

Product Weight: 

  • 8.1 lb

OTC Flow Block with Loading Valve User Manual

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