BUILT-IN AND EXTERNAL UNLOADERS
The pump is a critical component of every pressure washer. Knowing the difference between them will help you select the machine that is suited to your task. The unloader is a often an overlooked and misunderstood part of the pressure washer pump.
Make sure you know the details so that you get what is best suited for you and your pressure washer will last longer.
PUMP/UNLOADER GUIDE
GOOD BETTER EXCELLENT BEST |
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---|---|---|---|---|
AXIAL | AXIAL | TRIPLEX | TRIPLEX | |
HEAD | ALUMINUM HEAD |
BRASS HEAD | BRASS HEAD | BRASS HEAD |
UNLOADER TYPE | BUILT IN | BUILT IN | BUILT IN | EXTERNAL |
SERIES | ||||
PURCHASE PRICE | $ | $$ | $$$ | $$$$ |
FITTINGS | M22 | M22/ QUICK CONNECT |
QUICK CONNECT |
QUICK CONNECT |
MAX PSI | ||||
HEAT MANAGEMENT |
||||
REBUILDABLE | N/A | |||
LIFE SPAN |
AXIAL
Wobble plate system.Direct Drive, ideal for many light and medium duty application.
TRIPLEX
Features a crankshaft and piston system that delivers greater power and longer life.For medium to heavy-duty applications.
BUILT IN UNLOADER
- Part of the pump head assembly
- Compact design takes less space
- Lower cost to build
- Internals can often be rebuilt
EXTERNAL UNLOADER
- Seperate part that is bolted to the pump head
- Easily replaced for quicker maintenance
- Greater capacity for PSI and GPM
- Models with external by-pass hoses have:
- Better heat management
- Ability to dump water to the ground to prevent overheating
- Ability to reclaim water to a holding tank to prevent overheating