Suction Spring for Kerr KA-3500PT/Q5450PT
This is a suction spring for the Kerr KA-3500PT and Q5450PT pumps. As a valve spring in the fluid end, it returns the suction valve to its seat after each stroke so the valve closes promptly. It is listed to fit the KA-3500PT and is an aftermarket replacement for Kerr SKU KA-52S, not an OEM part.
What it is
This is a replacement part for the listed reciprocating pump models, supplied to match the original component's form and fit.
Pump compatibility
Specifications
| Property | Value |
|---|---|
| Weight | 1.00 lb (≈ 0.45 kg, converted) |
Manufacturer technical notes
Suction Spring (Short) for Kerr KA-3500PT/Q5450PT (SKU:KA-52S), forged from ASTM A228 spring steel (0.85-0.95% carbon), vacuum heat-treated (HRC 45-50) with shot peening (SAE J443), spring force ≥850MPa, fatigue life >100k cycles, API 7K compliant, compatible with Rhino Supply 252100/252105 replacements.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing Kerr KA-52S.
FAQ
- Which pump does this suction spring fit?
- It is listed to fit the Kerr KA-3500PT, and the part is named for the Kerr KA-3500PT/Q5450PT pumps.
- What does a suction spring do?
- It is a valve spring: after each stroke it returns the suction valve body to its seat, helping the valve close promptly during operation.
- What is the cross-reference number for this spring?
- It is an aftermarket replacement supplied to match Kerr SKU KA-52S; the brand and SKU are given for identification only and do not indicate OEM manufacture. It weighs about 1.00 lb.
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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