Your Graco Husky, ARO, Wilden or Yamada diaphragm pump has quit, and you need a replacement that fits where the old one sat. Samoa’s PIVOT Series air-operated double diaphragm (AODD) pumps were designed to match the relative dimensions of the major brands, so in most installations they swap in with the same port size, flow class and footprint. Use the table below to find your match, then send us your old pump’s model number if you want us to double-check the fit.
Diaphragm pump cross-reference by size
| Port size | If you have… | Max flow (theirs) | Samoa PIVOT replacement | Max flow |
|---|---|---|---|---|
| 3/8″ | Graco Husky 307 | 7 gpm | UP03 | 8.2 gpm |
| 3/8″ | ARO PD03 (Compact) | 10.6 gpm | UP03 | 8.2 gpm |
| 3/8″ | Yamada DP-10 | 6 gpm | UP03 (plastic) or UP05 (aluminum/stainless) | 8.2 / 14.3 gpm |
| 1/2″ | Graco Husky 515 | 15 gpm | UP05 | 14.3 gpm |
| 1/2″ | ARO PD05 (Compact) | 14.4 gpm | UP05 | 14.3 gpm |
| 1/2″ | Wilden P1 / PS1 / P100 | 15–15.9 gpm | UP05 | 14.3 gpm |
| 1/2″ | Yamada NDP-15 / DP-15 | 13.5 / 7.4 gpm | UP05 | 14.3 gpm |
| 3/4″ | Graco Husky 716 | 16 gpm | UP10 with 1″ × 3/4″ reducers, or UP05 if 14 gpm is enough | 53 / 14.3 gpm |
| 1″ | Graco Husky 1050 | 50 gpm | UP10 | 53 gpm |
| 1″ | ARO PD10 | 52–53 gpm | UP10 | 53 gpm |
| 1″ | Wilden P2 / PS2 | 37–56 gpm | UP10 | 53 gpm |
| 1″ | Yamada NDP-25 | 46.2 gpm | UP10 or CP10 compact | 53 / 35 gpm |
Competitor flow ratings are the manufacturers’ published maximums. Graco, Husky, ARO, Wilden and Yamada are trademarks of their respective owners and are used here only to identify the pumps a Samoa model replaces. Build-All is not affiliated with those companies.
Match the materials, not just the size
Order the same wetted materials you’re running now, unless the old pump failed because of the fluid. As a starting point:
- Mineral spirits, parts washer solvent, acetone, MEK, thinners: aluminum or stainless with PTFE diaphragms, and ground the pump.
- Aqueous detergent, rinse water, coolant: polypropylene with Santoprene diaphragms.
- Acids, caustics, plating chemistry: polypropylene or PVDF with PTFE.
Not sure? Tell us what you’re pumping and we’ll check it against Samoa’s chemical compatibility guide.
Why switch to Samoa PIVOT
- Stall-resistant air valve. Samoa’s patented pivot-shaft air valve has one moving part and passes wet, dirty shop air straight to exhaust instead of hanging up mid-stroke.
- Fast service. The air valve is a cartridge that can be swapped in minutes, and diaphragm, ball, seat and O-ring kits are sold separately.
- ATEX-certified metal pumps for solvent and hazardous-location work.
- Stocked in the USA and shipped from Samoa’s North Carolina warehouse, with most common configurations shipping in days.
Cross-reference FAQ
Will a Samoa pump bolt into the same spot as my old pump?
Samoa designed the PIVOT Series to match the relative dimensions of the main competitive brands, so port size and overall footprint line up in most installations. Port orientation and mounting-hole spacing vary by model and manifold option, so send us your old model number or a photo of the nameplate and we’ll confirm before you order.
My old pump is 3/4″. Is there a 3/4″ PIVOT?
No. For a 3/4″ Graco Husky 716, most shops either step up to the 1″ UP10 with reducer bushings or drop to the 1/2″ UP05 if they don’t need the full 16 gpm.
Do you sell rebuild kits?
Yes. Diaphragm, valve ball, valve seat and seat O-ring kits are available for every PIVOT model. Ask us for the kit that matches your pump’s part number.