National 12-P-160 Mud Pump Parts and Drawing References

The National 12-P-160 model name alone does not identify every valve-cover component. The supplied EPL-967 catalog shows a standard fluid end with Fast-Change valve covers and an optional version with Tapr-Lok covers. A buyer preparing a repair order should identify the cover fitted to the pump before comparing seal retainers, threaded rings, covers or complete cover kits.

Model and source-reference facts

Match the installed cover arrangement first

The standard Fast-Change drawing is shown on PDF page 3 of the supplied catalog. Its bill of material identifies kit 1292354 and lists the threaded ring 1292351, valve cover 1292352, seal-retainer puller 1292353 and seal retainer 1292350 separately. The optional Tapr-Lok arrangement appears on the following page. These are distinct illustrated arrangements; similar descriptions do not establish that their individual parts can be exchanged.

The same reference distinguishes a studded suction module from a bare suction module, and a studded discharge module from a bare discharge module. Premium alternatives are also listed separately. When requesting a module, specify whether studs and related fitted components are included, and attach the drawing revision used for the request. The complete assembly description should travel with the number when it is copied into a quotation spreadsheet.

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 a 12-P-160 enquiry, include the serial number, installed valve-cover photograph, liner or piston size and a marked-up drawing. Give an individual line for each required component, with quantity and any available old part number. The existing 12-P-160 parts reference page can support an initial lookup; the final match should use the complete model and the installed assembly details.

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.