I picked up a small Honda 2" waterpump (WB20X) for occasional irrigating. I also connect it to an ibc tote: inlet is 2" solid pipe, outlet is 1.5" fire hose using a 2" to 1.5" adapter. My question is would it be okay to connect a 3/4" garden hose to the outlet of the water pump using a 2" to 3/4" adapter? I'm concerned that reducing the outlet that much could damage the pump. A garden hose would be a lot easier to move around and control in a small space.
in past I have used pumps like that to run drip lines and brass impact railbirds . you need to get some pump charts figure out the head, volume and pressure of output and balance your output to what the pump is pumping. the pump most likely has pressure and volume ratings. for example if your pump is pumping 50 gallons a minute at 40psi you want to have enough diameter on the output side to take advantage of that if you want to say water a 400' run of drip line. put a pressure gauge and valve on output side so you will know if you are running up the pressure in the pump too high and you can open valve to reduce the pressure in the pump.
does any of this make any sense they way I tried to describe it. the pumps I had used were 5hp gas driven with 2" input and output and I had hundreds of feet of 2" pipe. and reduced it down as necessary
- You can buy smaller petrol pumps
- I would put a T piece at the discharge point, cap off the larger exit point and with a 2" x 1" reducer fit a 1 inch ball valve to the side of the T.
Using the ball valve to adjust the flow I would then use the garden hose with perhaps a 25mm [ 1 inch ] hose
John Daley Bendigo, Australia
The Enemy of progress is the hope of a perfect plan