Welcome to Precise Lapping & Grinding Corp.

Lapping of a Valve Plunger

Examples of our Work

A customer in the vending machine industry needed a company with the technical ability and facilities to handle the high-volume processing of their brass valve seat plunger as highlighted here. Precise Lapping & Grinding Corp. (PLG) was chosen to complete the required work, which encompassed the precision lapping of the part.

PLG engineered and developed the custom tooling and fixtures required to effectively process the plunger. Utilizing our Speedfam lapping machine, the 1.50" long by 0.50" diameter plunger was lapped, achieving the demanding constraints for flatness to within 0.0001" tolerance levels.

Flatness checks were implemented throughout production to ensure accuracy.

Turnaround time for this project was 7 days, and we ship 1,000,000 units annually to the customer in the Mid-West. Initial customer concerns regarding pricing were overcome, with this project, which met their stipulations for cost, quality, volume, and delivery.

For more details about the lapping of this brass valve seat plunger, or our other high volume precision capabilities please see the table below or contact us directly.

Highlights of a Valve Plunger Project

Product Description Valve Seat Plunger
Capabilities Applied/Processes Primary: Lapping
Equipment Used to Manufacture Part Speed Fam Lapping Machine
Overall, Part Dimensions Length: 1.50” Diameter: 0.50"
Tightest Tolerances One Side Flat to Within 0.0001"
Material Used Brass
In process testing/inspection performed Flatness Check
Industry for Use Vending Machine
Volume 1,000,000 per Year
Delivery/Turnaround Time 7 days
Delivery Location Mid-West
Standards Met Customer Specifications, 2D CAD Drawing
Product Name Valve Plunger

Examples of our Work

At Precise Lapping & Grinding Corp. (PLG), we provide precision grinding and lapping to customers in a wide range of industries. Here are just a few examples of the innovative solutions and value-added products and services that we deliver every day.


Satisfied clients Precise Lapping & Grinding


Awards Winner Precise Lapping & Grinding


Combined years of experience

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