APPLICATION & COMPONENTS

Specified fire-pump internals

Review copper-alloy impellers and wear rings only where the fire-pump OEM specifies them.

Fire Protection Water Systems

Locate the part.
Define the requirements.

Select a component group below.

For pump OEMs and approved component suppliers. The part drawing, material approval, balance requirements and running-clearance definition establish the procurement scope.

Generated images illustrate the context and component categories. They are not Zhiren project photographs or engineering drawings.

Select a group. Identify your part.

Choose a component to view its function, material candidates and drawing requirements.

Illustrative component locations: Impeller and running-clearance parts

Numbered locations identify component-family examples. Illustrations do not define dimensions, material grade or interchangeability.

Conceptual part illustration

COMPONENT GUIDE

Fire pump impeller

Inside an OEM fire pump designed for a copper-alloy impeller

Forms the rotating hydraulic passage in the approved pump model.

Manufacturing & delivery form
Cast impeller with agreed machining and balancing responsibility.

An OEM pump example is not proof of a particular copper-alloy grade. Pump flow, head and product qualification remain complete-equipment responsibilities.

Material candidates

UNS C90500 Tin bronze

A candidate for specified pump and valve components.

Review the actual medium, mating materials and manufacturing condition. Material data do not establish component pressure, wear life or pump performance.

UNS C95800 Nickel aluminium bronze

A candidate for approved saline-water pump and wear-component designs.

Confirm actual water chemistry, mating alloy, required material condition and equipment approval; no automatic equivalence with CC333G or C95400.

Confirm the drawing, actual duty, material standard and manufacturing condition. Material substitutions require customer approval, and supply scope is agreed after component review.

Component RFQ requirements

Approved pump geometry: Provide model, impeller drawing revision, vanes/shrouds, diameter and rotation direction.
Shaft connection: Specify hub bore, keyway, retention, datums and finished fits.
Material and medium: Provide the approved alloy and water conditions; saline-water alternatives require explicit design approval.
Balance and inspection: Define balance criteria, responsible party, surface finish and casting-defect acceptance.
OEM verification: State sample approval, material/batch records, permitted design changes and assembled-pump verification requirements.

Start with your drawing, specified alloy and quantity. Include the required delivery condition and acceptance records so the manufacturing and inspection scope can be reviewed.

Prepare a component enquiry Open component specification guide

Conceptual part illustration

COMPONENT GUIDE

Fire pump wear ring

Drawing-defined replaceable clearance interface between impeller and casing

Provides the specified replaceable ring at a pump running-clearance interface.

Manufacturing & delivery form
Ring-shaped casting blank or machined bar/tube stock, as agreed.

A pump wear ring is not a mechanical-seal face ring. Material, clearance and mating surfaces must be reviewed together, including standby duty.

Material candidates

UNS C90500 Tin bronze

A candidate for specified pump and valve components.

Review the actual medium, mating materials and manufacturing condition. Material data do not establish component pressure, wear life or pump performance.

UNS C95800 Nickel aluminium bronze

A candidate for approved saline-water pump and wear-component designs.

Confirm actual water chemistry, mating alloy, required material condition and equipment approval; no automatic equivalence with CC333G or C95400.

Confirm the drawing, actual duty, material standard and manufacturing condition. Material substitutions require customer approval, and supply scope is agreed after component review.

Component RFQ requirements

Ring geometry: Define inside/outside diameters, width, steps, retention and machining allowance.
Running fit: Specify the OEM clearance, mating-ring material, hardness relationship and temperature basis.
Geometric acceptance: Provide roundness, concentricity, surface finish and drawing datums.
Water and operating duty: Identify water chemistry, rotating speed, standby/start conditions and any wear concern.
Approved supply form: Confirm cast blank or stock route, final machining, material records and OEM replacement approval.

Start with your drawing, specified alloy and quantity. Include the required delivery condition and acceptance records so the manufacturing and inspection scope can be reviewed.

Prepare a component enquiry Open component specification guide

All component guides in this application 2 component entries

Open a guide directly, including parts from the other equipment groups.

Fire pump impellerComponent guide

Fire pump wear ringComponent guide

FURTHER GUIDANCE

Prepare the technical RFQ.

Alloy reference

Review tin-bronze grades.

Compare reference grades and composition in the alloy catalogue. Use the approved component specification to determine the required alloy and service suitability.

Explore the alloy reference