Which component of a piston pump has the least wear ... it is the housing. And ... pretty much the only second-hand parts in this pump are the gearbox/wet-end housing and air chambers. Almost every other component is brand new.
As stated above, the gearbox housing has been re-used, but the following parts are brand new:
- main gear
- four bearings
- conrod pin and bush
- crosshead
- piston rod and three nuts
- deflector
- stuffing box - complete
- piston plates
- centre plate
- brass cylinder liner
- end plate and screws
- wet-end maintenance kit (buckets, valve rubbers, valve springs, gaskets and packing)
- connection pipe and bungs
- pulley
- pinion shaft - note the pinion gear was in great condition so was not replaced with a new one
The above list means that this pump is probably as close as you could get to a brand new pump today! It will last many, many years and should be trouble-free and maintenance-free for a very long time. Yes, the paint job is two-toned, but everything else is completely ship-shape.
These Ajax A2s will pump to a maximum head of 250 feet. Their suction and discharge outlets are 1.25". That means that your delivery pipe will need to be a minimum of 1.25" - however, a larger pipe is recommended to help overcome friction when pumping. This pump will deliver 300 gallons per hour and it will need a minimum of 0.75 hp (electric) to deliver that at 50 strokes per minute.
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