Replacement Plungers for SPM® QWS 2500 & 2700 Fluid Ends (4.5″)

Replacement Plungers for SPM® QWS 2500 & 2700 Fluid Ends (4.5″)

1. Product Overview

4.5″ replacement plungers are offered for selected SPM® QWS 2500 and QWS 2700 fluid-end configurations. The product is intended for dimensional and material review against the pump model, drawing or sample supplied for quotation.

2. Configuration and Fitment Review

Confirm the exact fluid-end model, plunger diameter, connection details, dimensions and service conditions before selecting a configuration. This page describes a 4.50-inch reference size; 4.00-inch and 5.00-inch options may be available for selected requirements.

• Reference pump models: SPM® QWS 2500, QWS 2700 and selected related configurations.
• Reference diameter: 4.50 inch (4-1/2 inch).
• Connection: Pony-rod connection details to be confirmed against the applicable drawing or sample.

3. Coating and Manufacturing Information

The listed configuration uses a flame-spray and fuse process with a nickel-based alloy coating on a carbon-steel core. Coating selection, surface finish and dimensional requirements should be confirmed for the intended fluid end and service conditions.

Available process information includes the coating material, core material and surface-finish requirements shown in the technical specifications below. Specific process parameters and inspection records are provided with the applicable quotation or order documentation.

4. Technical Specifications

Technical parameter	Reference specification
Plunger diameter	4.50″ (4-1/2 inch)
Coating material	Nickel-based alloy (listed configuration)
Manufacturing process	Flame Spray & Fuse (thermal spray)
Surface hardness	58–62 HRC (reference value; confirm for the quoted configuration)
Surface finish	Ra 2–4 µin (reference value)
Core material	High-tensile carbon steel (listed configuration)
Compatible fluid ends	SPM®, Gardner Denver®, FMC® and MSI® configurations subject to dimensional review

5. Application Information

These plungers are considered for hydraulic-fracturing and well-service fluid ends where the pump model, dimensions, material requirements and operating conditions have been identified. Confirm media, pressure, temperature, stroke rate and packing arrangement before quotation.

6. Quality and Documentation

Inspection and documentation can be arranged according to the quoted configuration and customer requirements. Available records may include dimensional results, coating or hardness records, material documentation and a Certificate of Conformance where applicable.

7. Request a Quote

Send the pump model, part reference, drawing or sample details, required quantity and service conditions for review. SPM®, Weir®, QWS™ and Destiny™ are trademarks of their respective owners. Royal Way is an independent manufacturer of replacement sealing and fluid-end components.