National 9-P-100 Mud Pump Parts: Power-End and Fluid-End References

A National 9-P-100 mud pump parts list should identify both the pump and the specific assembly being repaired. The supplied catalog cover records a triplex slush pump and a 6-3/4-inch by 9-1/4-inch size designation. Inside the catalog, the power-end and crankshaft sections are illustrated separately, helping buyers relate a replacement component to its installed position.

Model and source-reference facts

Use the component number alongside the drawing

The supplied 9P-100 component list distinguishes 1293240, a studded discharge module, from the piston rod 1293147 and the sub rod 1293146. It also lists the liner bushing and liner clamp as separate items. A purchase request that only says "rod set" or "liner assembly" leaves open which of these components and associated seals are actually required.

For power-end work, keep the crosshead, crosshead liner and crosshead pin on separate lines. The reference list identifies them with different numbers, and it distinguishes a left-hand crosshead from the right-hand and center reference. The matching drawing, pump serial number and a photograph of the removed component are needed before accepting a substitution or assuming that the same descriptive name means the same part.

The examples below are selected reference entries, not a complete bill of material or a confirmation of interchangeability.

Details to include with the parts request

For each requested part, state the original number, description, quantity and drawing position. Add the installed liner or piston size where relevant, and record the catalog edition used by the maintenance team. Photographs should show the complete component and any identifying marks. Keep numbers as text in spreadsheets so that punctuation and any leading zeros survive when the enquiry is copied between purchasing systems.

For related purchasing information, see mud pump spare parts matching and liner, piston, valve and seat identification. You can contact Pratt Oil with your parts request for review of the model, reference and component details.

Brand and model names identify the equipment described in the source material. Final parts matching depends on the complete pump and assembly information.

Mud King catalogue references for this model

The reference list also includes entries from the Mud King Products expendables catalogue. MK and MKG prefixes identify that supplier catalogue’s numbering. Keep those prefixes and the stated size, valve series, liner outside diameter and source table together. They are not presented as original pump-manufacturer numbers or as a confirmation of fit.