KT - Liner Assembly 4" Piston Complete Extension Rod/Locknut/Chrome Liner/Gasket
This is a complete 4" piston liner assembly for the pump fluid end, supplied with the piston, extension rod, locknut, chrome liner and gasket as one ready-to-install package. The piston transmits force from the power end to the pumped fluid and reciprocates within the chrome liner bore on every stroke. It is an aftermarket replacement for Kerr KT-285-400CH-A, fits the JT7020, KT-3350PT, KT-3400PT, T-35 and T-40 pumps, and weighs about 16 lb.
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 | 16.00 lb (≈ 7.26 kg, converted) |
| Width | （无） |
| Height | （无） |
| Depth | （无） |
Manufacturer technical notes
4" Liner Assembly (SKU KT-285-400CH-A). 4340 steel + 0.2mm hard chrome. 12,000PSI rated, Ra0.04μm finish, includes preload nut/metal gasket for KT-series pumps.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing Kerr KT-285-400CH-A.
FAQ
- What is included in this 4" liner assembly?
- As described in its name, it comes complete with the piston, extension rod, locknut, chrome liner and gasket.
- Which pumps does this assembly fit?
- It is listed to fit the JT7020, KT-3350PT, KT-3400PT, T-35 and T-40 pumps.
- What reference part number does it replace?
- It is an aftermarket replacement for Kerr part KT-285-400CH-A; the brand and number are for identification only and do not imply 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.
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