WILDEN XPS420 vs XPS430: 1-1/2″ Aluminum AODD Pumps
Short answer: order the one that matches your pipework. The XPS420 has NPT threads and the XPS430 has ANSI flanges, and that is the only real difference. Same bolted body, same Pro-Flo SHIFT FIT air system, same performance.
Wilden rates both at 132 gpm (500 L/min) and 125 psi (8.6 bar), with solids up to 1/4 inch and 19.5 ft (5.9 m) dry suction lift on the Buna-N builds. The flanged pump is a little heavier, about 62 lb (28 kg) against 56 lb (25 kg).
If you are comparing with the clamped XPS4, the flow difference is large for the same port size: 132 gpm against 82. That is often the reason people move to the bolted frame.
One practical note: many XPS420 codes end in /0651, a factory option package. Quote the whole code when you reorder. Wilden lists 39 aluminum XPS420 builds and 26 XPS430 builds, with Santoprene the most common elastomer across both.
Example builds
| Part No. | Build code | Elastomer | Connection |
| 04-13798-R | XPS430/AZAAA/WWL/WF/WF | Santoprene | Flanged |
| 04-13561-R | XPS430/AAAAA/TWS/TF/ATF | PTFE | Flanged |
| 04-14491-R | XPS430/AZAAA/BLL/BN/BN | Bunalast | Flanged |
| 04-13560 | XPS430/AAAAA/BNS/BN/BN | Buna-N | Flanged |
| 04-14413 | XPS430/AAAAA/ZSS/FS/FS | Hytrel | Flanged |
| 04-13940 | XPS430/AAAAA/VTS/VT/VT | FKM | Flanged |
| 04-13664 | XPS430/AAAAA/EPS/EP/EP | EPDM | Flanged |
| 04-13577 | XPS430/AAAAA/NES/NE/NE | Neoprene | Flanged |
Search the 65 aluminum XPS420 and XPS430 builds: https://www.haquanpump.com/wilden-aodd-pumps/part-numbers?q=XPS420 | https://www.haquanpump.com/wilden-aodd-pumps/part-numbers?q=XPS430
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