Which pumps does the blue discharge valve insert KA-77B (1090-6219K) fit?

It fits the Kerr KA-3500PT, T50 and T50-PT models.

What part numbers identify this insert?

It is supplied as an aftermarket replacement for Kerr part number KA-77B and is also referenced as 1090-6219K, supplied to match the original part's form and fit.

VALVE INSERT DISCHARGE BLUE (1090-6219K)

VALVE INSERT DISCHARGE BLUE (1090-6219K) — Valve / Valve Part aftermarket replacement part

This blue discharge valve insert (1090-6219K) is a fluid-end valve part used in the discharge valve of a Kerr piston pump, which controls one-way flow by releasing fluid on the pressure stroke; "blue" identifies this version of the insert. It is supplied as an aftermarket replacement for Kerr part number KA-77B, matching the original part's form and fit. The insert fits the Kerr KA-3500PT, T50 and T50-PT models and weighs about 0.17 lb.

What it is

This valve part belongs to the fluid-end valve set that controls one-way flow through the pump on the suction and discharge strokes.

Pump compatibility

KA-3500PT
T50
T50-PT

Specifications

Property	Value
Weight	0.17 lb (≈ 0.08 kg, converted)

Manufacturer technical notes

VALVE INSERT DISCHARGE BLUE KA-77B (SKU KA-77B), molded from API 7K-certified polyurethane with vulcanization process (hardness 75±5 Shore A), pressure-resistant up to 7500 PSI oil & corrosion-resistant, fits FMC Bean M12 mud pumps, compatible with ceramic liners for enhanced abrasion resistance, blue marking for quick identification.

Verbatim from the Dongli product page on dlhddrilling.com.

Replacement / interchange

Aftermarket replacement cross-referencing Kerr KA-77B.

FAQ

Which pumps does the blue discharge valve insert KA-77B (1090-6219K) fit?: It fits the Kerr KA-3500PT, T50 and T50-PT models.
What is a discharge valve insert for?: It is a valve part used in the pump's discharge valve, which controls one-way flow by releasing fluid on the pressure stroke; "blue" identifies this version.
What part numbers identify this insert?: It is supplied as an aftermarket replacement for Kerr part number KA-77B and is also referenced as 1090-6219K, supplied to match the original part's form and fit.

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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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