Piston Complete 3 1/2"

This is a complete 3-1/2 inch piston for Kerr plunger pumps and compatible units. As a piston, it transmits force from the power end to the pumped fluid inside the cylinder liner and reciprocates in the liner bore on every stroke; supplied complete with its sealing element. It fits the JT7020, KA-3500PT, and KT-3350PT models and weighs about 5.6 lb. Supplied as an aftermarket replacement that can replace Kerr part number KA-245-350.
What it is
A pump piston transmits force from the power end to the pumped fluid inside the cylinder liner. It carries the sealing element and reciprocates within the liner bore on every stroke.
Pump compatibility
Specifications
| Property | Value |
|---|---|
| Weight | 5.60 lb (≈ 2.54 kg, converted) |
| Width | (无) |
| Height | (无) |
| Depth | (无) |
Manufacturer technical notes
Zhizhao Industrial Park No.1 Road, Jiumen Hui EthnicTownship, Gaocheng District, Shijiazhuang City, Hebei Province, People's Republic of China
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing Kerr KA-245-350.
FAQ
- Which pumps does this piston fit?
- It fits the JT7020, KA-3500PT, and KT-3350PT models.
- What does "complete" mean for this piston?
- "Complete" means the piston is supplied as a full assembly including its sealing element, ready to install rather than as separate components.
- What part number does it replace?
- It is an aftermarket replacement for Kerr part number KA-245-350; the brand and number are given for identification and cross-reference only and do not indicate OEM manufacture.
Related parts
All brand names, model numbers and part numbers are used for identification and cross-reference only and do not imply original-equipment manufacture. This is an aftermarket replacement part.
Need a quote or part lookup? Contact our team.