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🚀 Elevate your industrial flow game with unstoppable power and durability!
The Happybuy Air-Operated Double Diaphragm Pump features a 1-inch inlet/outlet, aluminum alloy housing, and premium nitrile diaphragms. It delivers up to 35 GPM flow rate and 120 PSI pressure, designed for corrosion resistance and long-lasting industrial use across diverse fluids and sectors.














| ASIN | B07KSYF7YB |
| Best Sellers Rank | #352,603 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #192 in Diaphragm Pumps |
| Brand Name | Happybuy |
| Color | Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (83) |
| Flow Rate | 35 Gallons Per Minute |
| Global Trade Identification Number | 00789458202135 |
| Included Components | 1 x Air-Operated Double Diaphragm Pump, 1 x User Manual |
| Item Dimensions L x W x H | 7.8"L x 7"W x 33"H |
| Item Type Name | Diaphragm Pump |
| Item Weight | 19 Pounds |
| Manufacturer | Happybuy |
| Manufacturer Part Number | diaphragm pump |
| Material Type | Aluminum |
| Maximum Lifting Height | 275.59 Feet |
| Model Number | QBY4-25L |
| Power Source | Air-Operated |
| Product Style | Diaphragm |
| UPC | 789458202135 |
| Unit Count | 1 Count |
O**A
Pump
Worked very well.
F**V
Pump ran fine for 6 months then failed
Pump ran fine for 6 months then failed, no product support or warranty. Sold by Amazon but Amazon says not supported.
P**N
Works great !
I replaced an electric pump with this, Even though I had to get a air compressor also. In the long run it is a way better pump that moves product and I don't need to worry about the impeller getting bound up.
A**N
Worst pump I’ve ever used.
Worked for water barely and then when I tried oil it didn’t work at all. Went out and spent 2k on a wilden pump and have had not a single problem. Kept getting air locked. Waisted time and money on this piece of crap. Go buy name brand and save yourself the headache.
K**Y
Works
This pump has never pumped anywhere close to 40 gallons per minute but it does move waste oil well. I have used the pump for 3 years and it has gradually gotten slower. It is easy to disassemble and clean but parts do wear out. I have been trying to find a rebuild kit to replace some of the worn components but can’t find anything. Looks like my only option is to buy another one. Will be looking for a pump with repair capability for future purchase as the cost to lifespan ratio is a little higher than I like.
D**I
great
work better than i thought it would
B**.
Works like it should.
Ues it to pump hydraulic oil when doing service on machines, work great and fast.
Z**.
Slow
Super slow pump barely pulls the used 15-40 through the hose into our tank. Not worth it in my opinion. Should’ve bought a bigger pump
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