Air diaghragm pumps
Air diaghragm pumps
(OP)
We currently have a (3")air diaphragm pump running at 42m3/hr
We want to install a second air diapghram pump (total flow 80m3/hr), but after further investigation I found that I needed to put in a pulsation damper for each pump because I will now have 2 pumps in parrallel and may cause an inertial pressure spike.In addition a return valve is required for each line if botyh pumps are running because this will The suction is 5 to 8 meters and we currently have a priming pot(1000lts) prior to the diaphragm pump. I am not sure if a priming pot is required?
Also i was told that what ever the air pressure is will be the discharge fluid pressure-is this correct?
We want to install a second air diapghram pump (total flow 80m3/hr), but after further investigation I found that I needed to put in a pulsation damper for each pump because I will now have 2 pumps in parrallel and may cause an inertial pressure spike.In addition a return valve is required for each line if botyh pumps are running because this will The suction is 5 to 8 meters and we currently have a priming pot(1000lts) prior to the diaphragm pump. I am not sure if a priming pot is required?
Also i was told that what ever the air pressure is will be the discharge fluid pressure-is this correct?





RE: Air diaghragm pumps
Note that there are some funky air diaphragm pump designs with linked diaphragms of different areas such that they can generate a stall pressure 2-4+ times as high as the supply air pressure.
RE: Air diaghragm pumps
Good luck,
Latexman
RE: Air diaghragm pumps
Also do I need a proiming pot or will the AOD pumps hold suction, even when they are not running?
RE: Air diaghragm pumps
Priming pot? Not sure but if the existing one needs it, two in parallel will need it by all means.
Keep in mind what Latexman wrote. He is right. You will never get twice the flow with two AODs running in parallel.
RE: Air diaghragm pumps
However, they are PD pumps in that they displace a fixed amount per stroke. It is the air drive that behaves differently than a constant speed induction motor.
AODD pumps have inlet and outlet check valves so they cannot work in resistance to fluid inertia, except by drag.
A damper would probably allow you to achieve a higher overall flow rate.
RE: Air diaghragm pumps