WHEELER-REX 700723 - Piston for 39300 & 39301 Hydrostatic Test Pumps
Replacement piston for Wheeler-Rex electric hydrostatic test pumps. This piston is a key component in the twin-piston, positive displacement pump section—replace a worn piston to help restore proper pressure build-up and consistent pump performance.
Features
- Genuine replacement piston for the pump section
- Helps correct issues caused by piston wear (loss of pressure, inconsistent output)
- Designed for the Wheeler-Rex twin-piston hydrostatic test pump assembly
- Ideal for service/repair when inspecting piston O-rings, cylinder heads, and check valves
Compatibility
- Wheeler-Rex Hydrostatic Test Pump Models: 39300 and 39301
Specifications
| Brand | Wheeler-Rex |
| Part Number | 700723 |
| Part Type | Piston |
| Equipment Type | Electric Hydrostatic Test Pump |
| Fits | 39300 / 39301 |
Notes
- Verify your pump model and existing piston style before ordering.
- If you are rebuilding due to low pressure, also inspect piston O-rings and check valves, and lubricate as recommended during reassembly.
