3″ AMT Replacement Diaphragm – Neoprene (Model 335)
The 3 Inch AMT Replacement Diaphragm – Neoprene (Model 335) is the right part for contractors keeping an AMT Model 335 pump running at full output in tough field conditions. Made from neoprene, this replacement diaphragm is designed to handle abrasion, muddy water, and the mild chemical exposure that comes with everyday site pumping. It fits AMT 3″ Model 335 diaphragm pumps with a direct install and OEM-matching dimensions. When your 3″ AMT pump needs a reliable fix, this is the part to order.
Key Features
- Fits AMT 3″ Model 335 diaphragm pumps for a no-modification install.
- Neoprene construction for strong abrasion resistance and chemical flexibility.
- OEM-matched dimensions for a leak-free fit and full pump performance.
- Suited for muddy water, sludge, slurry, and construction site dewatering.
- Dependable service life for contractors who run pumps hard every day.
- In stock at Ken’s Distributing and ready to ship.
Specifications and Compatibility
- Size: 3 Inch
- Material: Neoprene
- Pump Compatibility: AMT 3″ Model 335 diaphragm pumps
- Part Number: 3350-300-00
- Part Type: Replacement Diaphragm
- Use: Mud pumps, trash pumps, dewatering, construction site pumping
Why the 3 Inch AMT Replacement Diaphragm – Neoprene (Model 335) Holds Up Through Hard Use
The AMT Model 335 is a workhorse pump used across construction sites, rental fleets, and utility contractors. Moving 3″ of flow means more volume per stroke, and that demands a diaphragm that can handle repeated flex cycles without fatiguing early. This 3″ neoprene diaphragm is built for exactly that kind of workload.
Neoprene stays pliable when temperatures drop and keeps its shape in abrasive water. It also resists the kind of mild chemical exposure you find in construction runoff, concrete washout, and fertilizer-mixed water. For contractors who run the AMT Model 335 through demanding conditions all season, neoprene gives the best balance of durability and cost.
Cross-Compatibility
The 3 Inch AMT Replacement Diaphragm – Neoprene (Model 335) is made for AMT 3″ Model 335 diaphragm pumps. If you run the 2″ AMT Model 336 or need a diaphragm with no holes, we carry those versions separately. We also stock rubber and TPE materials for the Model 335, along with diaphragms for CH&E, Magnum, Mud Hog, Wacker, Gorman-Rupp, Multiquip, and Riverside pumps.
Frequently Asked Questions
Q. What Pump Does This AMT Neoprene Diaphragm Fit?
The 3 Inch AMT Replacement Diaphragm – Neoprene (Model 335) fits AMT 3″ Model 335 diaphragm pumps. Always check the model number on your pump and the size on your old diaphragm before you order. Getting the right part the first time means no delays and no failed seals when you put the pump back in service.
Q. How Does Neoprene Hold Up Compared to Rubber or TPE on a Model 335?
Neoprene is the practical pick for most Model 335 applications. It handles mud, grit, and mild chemicals better than rubber, which is better suited for cleaner water. TPE is the step up when you are dealing with heat or stronger chemicals. For typical construction site and dewatering work, neoprene gives you the durability you need without overspending on TPE.
Q. How Long Does This Neoprene Diaphragm Last on a 3″ AMT Pump?
Service life varies by job conditions, but most contractors get six months to a year of daily use. The 3″ pump cycles at a higher workload than a 2″ unit, so the diaphragm works harder per hour. If you are pumping sandy or coarsely abrasive water, check the diaphragm monthly and keep a spare on hand. Cleaner water conditions will extend the life closer to the full year mark.
Q. Can I Order This Part by Part Number?
Yes. The 3 Inch AMT Replacement Diaphragm – Neoprene (Model 335) corresponds to AMT part number 3350-300-00. You can use that number to cross-reference and confirm the fit before ordering. If you have any questions about whether that part number matches your specific pump, give us a call and we will verify it for you.