3″ Wacker Replacement Diaphragm – Neoprene (PDI3A)
The 3 Inch Wacker Replacement Diaphragm – Neoprene (PDI3A) is a direct-fit part made for contractors running the Wacker Neuson PDI3A diaphragm pump in tough field conditions. This replacement diaphragm is built from neoprene for strong abrasion resistance and chemical flexibility, and it fits the PDI3A pump model without modification. If your PDI3A is pumping muddy water, sludge, or sandy construction runoff every day, this is the diaphragm to keep on hand for a fast, reliable swap.
Key Features
- Direct fit for the Wacker Neuson PDI3A 3″ diaphragm pump.
- Neoprene material provides abrasion resistance and handles mild chemical exposure.
- Matched dimensions for a proper OEM-quality seal and full pump output.
- Suited for muddy water, slurry, sandy runoff, and high-volume site dewatering.
- Built for daily contractor and rental yard use with a long service life.
- In stock and ships fast from Ken’s Distributing.
Specifications and Compatibility
- Size: 3 Inch
- Material: Neoprene
- Pump Compatibility: Wacker Neuson PDI3A diaphragm pump
- Part Number: 5000180238
- Part Type: Replacement Diaphragm
- Use: Mud pumps, trash pumps, high-volume site dewatering
Why the 3 Inch Wacker Replacement Diaphragm – Neoprene (PDI3A) Is the Smart Service Part for PDI3A Operators
The Wacker PDI3A is a popular pump on excavation sites, rental fleets, and large dewatering jobs. At 3″, it moves a serious volume of water, and when that water is carrying grit and sediment, the diaphragm needs to be tough enough to keep up. Neoprene meets that standard. It stays flexible through repeated pump cycles and does not break down from the abrasion that comes with muddy job site water.
Rental yards and contractors who keep PDI3A pumps running all season know that the diaphragm is a wear item. Stocking a spare neoprene diaphragm for the PDI3A means any swap can be done quickly on the job without waiting on parts. Neoprene gives you the right balance of durability and cost for the kind of daily use this pump sees on active sites.
Cross-Compatibility
The 3 Inch Wacker Replacement Diaphragm – Neoprene (PDI3A) fits the Wacker Neuson PDI3A 3″ diaphragm pump. If you run a Wacker 2″ pump or need a rubber version for a Wacker 3″ pump, those are listed separately on our site. We also carry diaphragms for CH&E, AMT, Magnum, Mud Hog, Gorman-Rupp, Multiquip, and Riverside pumps across multiple sizes and materials.
Frequently Asked Questions
What Pump Does This Neoprene Diaphragm Fit?
The 3 Inch Wacker Replacement Diaphragm – Neoprene (PDI3A) is specifically made for the Wacker Neuson PDI3A 3″ diaphragm pump. Always confirm the pump model before ordering, since Wacker makes multiple diaphragm pump models and the PDI3A has specific diaphragm dimensions. Getting the right part the first time means no downtime waiting on a return or exchange.
Why Choose Neoprene Over Rubber for the Wacker PDI3A?
The PDI3A is typically used in high-volume dewatering and excavation work, where the water carries sediment, grit, and sometimes mild site chemicals. Rubber holds up in cleaner conditions but wears faster in those environments. Neoprene is the better choice for the PDI3A because it handles abrasion and mild chemical exposure well, which is exactly what this pump deals with in everyday field use.
How Long Does a Neoprene Diaphragm Last on the PDI3A?
Most contractors and rental yards get six months to over a year of regular use from a neoprene diaphragm on the PDI3A. The 3″ pump runs at a higher cycle rate than a 2″ unit, so the diaphragm works harder per shift. Check it monthly if the pump runs continuously in abrasive conditions. A spare neoprene diaphragm in the parts kit keeps downtime to a minimum when it is time to swap.
Can I Order This Part by Part Number?
Yes. The 3 Inch Wacker Replacement Diaphragm – Neoprene (PDI3A) corresponds to Wacker part number 5000180238. You can use that number to cross-reference and confirm you have the right part for your PDI3A pump. If you have any questions about the fit or want to verify the part number before ordering, call us and we will confirm it for you.