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WHEELER-REX

Wheeler-Rex is a manufacturer of pipe tools, pipeline equipment, and hydrostatic test pumps, with a product history that spans more than a century in the pipe trades. The company's catalog covers manual and powered pipe cutters, reamers, bevellers, pipe wrenches, vises, stands, and a range of specialty tools for maintenance and fabrication. Alongside these tools, Wheeler-Rex produces hydrostatic test pumps used to pressure-test piping systems, valves, and pressure vessels, and it supplies the repair parts and consumables that keep those pumps in service. 3G Electric stocks more than 160 Wheeler-Rex SKUs, including cutters, reamers, and repair parts, and supports buyers who need to match a specific tool or kit to an existing pump model or pipe size.

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About WHEELER-REX

Wheeler-Rex is a manufacturer of pipe tools, pipeline equipment, and hydrostatic test pumps, with a product history that spans more than a century in the pipe trades. The company's catalog covers manual and powered pipe cutters, reamers, bevellers, pipe wrenches, vises, stands, and a range of specialty tools for maintenance and fabrication. Alongside these tools, Wheeler-Rex produces hydrostatic test pumps used to pressure-test piping systems, valves, and pressure vessels, and it supplies the repair parts and consumables that keep those pumps in service. 3G Electric stocks more than 160 Wheeler-Rex SKUs, including cutters, reamers, and repair parts, and supports buyers who need to match a specific tool or kit to an existing pump model or pipe size.

The hydrostatic test pump line is organized around model numbers such as 35100, 46501, 46800, 47105, 466000, and 373080, with repair kits identified by manufacturer part numbers including 34052, 34053, 36345, 36347, 36361, 36390, 36395, and 39350. These kits contain components such as Desmopan piston diaphragms, O-rings, O-ring adapters, piston cap screws, and accumulator diaphragms. Maximum discharge pressure ratings across the kits we list range from 300 psi to 3,000 psi, so the correct kit depends on the pump model and the pressure class of the test being performed. Desmopan is a thermoplastic polyurethane elastomer used for diaphragms where flex life and resistance to oils and fuels matter; it is a material selection detail that buyers should note when ordering replacement parts.

For pipe work, Wheeler-Rex tools are built around the mechanics of cutting and preparing pipe in the field and in the shop. Cutters are sized to specific pipe diameters and wall thicknesses, reamers deburr the inside of pipe after cutting, and bevellers prepare weld edges. The tools are mechanical in operation, which means the specification that matters most is the pipe size range and the material being cut. Buyers should confirm the tool's rated capacity against the actual pipe outside diameter and wall thickness before ordering, because a cutter rated for a nominal pipe size may not cover the same size in a heavier wall schedule.

3G Electric supplies the Wheeler-Rex line as part of its industrial equipment catalog, which also includes industrial burners, pumps, gas controls, and related components. For Wheeler-Rex, the practical support is in part identification: matching a repair kit to a pump model, confirming the included components and pressure rating, and cross-referencing manufacturer part numbers. The repair kits we list are model-specific, and several kits share the same pump model but contain different components, so the manufacturer part number is the reliable identifier. Where a kit lists a maximum discharge pressure, that figure applies to the pump model it is compatible with, not to the kit as a standalone pressure rating. Buyers working from an existing pump nameplate or a maintenance schedule can use the model number and part number together to select the correct kit.

Common Applications

  • Pressure testing of piping systems — Wheeler-Rex hydrostatic test pump repair kit 36395 for model 373080, rated to 3,000 psi
  • Valve and pressure vessel testing — Wheeler-Rex repair kit 34052 or 34053 for model 47105, rated to 1,200 psi
  • Pump maintenance programs — Wheeler-Rex kit 36390 with three Desmopan piston diaphragms for model 46800
  • Seal replacement during pump servicing — Wheeler-Rex kit 39350 with three O-rings for model 39301, rated to 300 psi
  • Accumulator servicing on hydrostatic test pumps — Wheeler-Rex kit 36347 with accumulator diaphragm for model 466000, rated to 300 psi
  • Pipe preparation in fabrication and maintenance — Wheeler-Rex pipe cutters and reamers for sizing and deburring pipe ends

Frequently asked questions

Common questions about WHEELER-REX from 3G Electric.

What is the difference between Wheeler-Rex repair kit 34052 and 34053 for the model 47105 hydrostatic test pump?

Both kits are listed as compatible with Wheeler-Rex hydrostatic test pump model 47105 and both carry a maximum discharge pressure of 1,200 psi. The difference is in the contents and the manufacturer part number. Kit 34052 includes six O-rings, and kit 34053 also includes six O-rings. Because the part numbers differ, they should be treated as distinct service items. When ordering, confirm the manufacturer part number against the pump's parts list rather than relying on the pump model alone, since more than one kit can reference the same model.

Which Wheeler-Rex hydrostatic test pump repair kits include Desmopan piston diaphragms?

The kit we list with Desmopan piston diaphragms is manufacturer part number 36390, compatible with Wheeler-Rex hydrostatic test pump model 46800. It includes three Desmopan piston diaphragms. Desmopan is a thermoplastic polyurethane elastomer, a material chosen for diaphragm applications where flex fatigue and resistance to oils and fuels are considerations. Other kits in the line include plain piston diaphragms, such as part number 36345 for model 46501, which includes three piston diaphragms. If the pump's parts list specifies Desmopan, use the kit that names that material.

What is the maximum discharge pressure for Wheeler-Rex repair kit 36395?

Wheeler-Rex repair kit 36395 is listed with a maximum discharge pressure of 3,000 psi. It is compatible with hydrostatic test pump model 373080 and includes six O-ring adapters. This is the highest discharge pressure rating among the Wheeler-Rex repair kits we list, which otherwise range from 300 psi to 1,200 psi. The pressure figure applies to the pump model the kit is compatible with, so confirm that the pump in service is rated for the test pressure required before using the kit. Do not exceed the pump's rated discharge pressure.

How do I identify the correct Wheeler-Rex repair kit for a hydrostatic test pump?

Start with the pump model number on the nameplate, then match it to the compatible manufacturer model number in the kit listing. Because several kits reference the same pump model, the manufacturer part number is the deciding identifier. For example, model 47105 is referenced by both part 34052 and part 34053. Check the included components against the pump's parts list: kits in this line contain items such as O-rings, O-ring adapters, piston diaphragms, accumulator diaphragms, and piston cap screws. Confirm the maximum discharge pressure listed for the kit matches the pump's rating before ordering.

What components are included in Wheeler-Rex hydrostatic test pump repair kits?

The repair kits we list include several component types. O-ring kits, such as part numbers 34052, 34053, and 39350, contain six, six, and three O-rings respectively. Part number 36395 includes six O-ring adapters. Diaphragm kits include part number 36390 with three Desmopan piston diaphragms, part number 36345 with three piston diaphragms, and part number 36347 with an accumulator diaphragm. Part number 36361 includes two piston cap screws. The included components are listed per kit, so verify the contents against the pump's service requirements before ordering.

Does 3G Electric stock Wheeler-Rex pipe cutters and reamers in addition to repair parts?

Yes. 3G Electric stocks more than 160 Wheeler-Rex SKUs, a range that includes pipe cutters, reamers, and repair parts. The repair parts we list are for hydrostatic test pumps, while the cutters and reamers cover pipe preparation work. When selecting a cutter or reamer, confirm the pipe size range and the material being cut, since a tool rated for a nominal pipe size may not cover the same size in a heavier wall schedule. For repair parts, match the manufacturer part number to the pump model. Both categories are available through the 3G Electric catalog.