Plastic Injection Molded Polypropylene Float Assembly for the Agriculture Industry

The project highlighted here was designed for use as a float assembly. Used in an agricultural irrigation system, it serves to eliminate air hammering within the system. Acting as a shut-off valve, it allows all the air in the lines to escape before the float rises, shutting off the flow.

This product utilizes a foaming agent for buoyancy to achieve the .064 specific gravity. Obtaining this specification in such a thick part (.260″) requires extra process control.

The 10.00 oz. shot was injected into a 4 cavity mold, with 220 tons of clamping force. Our advanced processes allowed us to achieve all of the goals for weight and tolerances, including dimensions of 1.90″ in length and width, 4.25″ in height, and weight of 4.90 oz. This ongoing project consists of production runs of 500 pieces per month. For more information see the table below or contact us directly.

Plastic Injection Molded... Project Highlights

Plastic Injection Molded Polypropylene Float Assembly Project

Product Description Eliminates "air hammering" in irrigation by allowing all the air to escape the lines before float rises thereby shutting valve off.
Injection Molding Capabilities Applied/Processes Primary:
Plastic Injection Molding
Material Foamed to Achieve 0.64 Specific Gravity
Overall Part Dimensions Product Length: 1.90"
Product Width: 1.90"
Product Height: 4.25"
Product Weight: 4.90 oz.
Tightest Tolerances ± 0.010"
Material Used Base Material: PP (Polypropylene)
Material Thickness: 0.260"
Material Finish Color: Natural
Additional Facts Shot Size: 10.00 oz.
Maximum Clamping Force: 220 tons
Number of Cavities: 4
Temperature Range: 375°F - 575°F in processing
In Process Testing/Inspection Performed Dimensional Inspection, Visual Inspection
Industry for Use Agriculture
Volume 500 per Month
Delivery/Turnaround Time 2 Weeks
Delivery Location Eastern Washington
Standards Met Customer Quality Specifications
CAD Drawing
Full Cavity Fill/No NIT Lines
Pressure/Structural Integrity
Product Name Float Assembly