NEED DC WATER PUMP - Page 1
Forum section: electronics / beginners

author: gsingh11
author_rank: Contributor
timestamp: January 24, 2023, 07:23:32 pm
content: Hi, I am looking for a good dc water pump that has a good flow of water and can run in both directions to fill and drain. I'm making a project to fill and empty a tank so, i am urgently looking for a water pump.Modify message

author: Siwastaja
author_rank: Super Contributor
timestamp: January 24, 2023, 07:24:51 pm
content: Quote from: gsingh11 on January 24, 2023, 06:54:12 pmPeristaltic pumps can run in both directions, but those do not have high flow rates. Usual centrifugal or similar pumps can't run in reverse. Bidirectional pump is probably so difficult to find that I'd suggest going for two separate pumps, possibly with check valves preventing free flow in the wrong direction on each leg if you end up putting them in "parallel" (not electrically, but... hydronically (is that a word)). You may also want to try back-to-back series configuration, though, many pumps allow free flow through the pump.

author: pcprogrammer
author_rank: Super Contributor
timestamp: January 24, 2023, 07:41:29 pm
content: I think there is some ruling on the forum about double posting, so I reported your other one in the manufacturing section to the moderators.

author: bill_c
author_rank: Regular Contributor
timestamp: January 25, 2023, 02:31:12 am
content: Gear, vane, or flexible impeller types may also work. Something like this maybe ?https://www.amazon.com/Jabsco-Ballast-King-Reversible-Pump/dp/B01613ZMES/

author: bidrohini
author_rank: Regular Contributor
timestamp: January 26, 2023, 07:19:45 am
content: You can check Polario Bi-Directional DC Water Pump.

author: IanB
author_rank: Super Contributor
timestamp: January 26, 2023, 07:32:45 am
content: Quote from: gsingh11 on January 24, 2023, 07:23:32 pmYou probably want the water to stay in place when the pump is switched off, in which case you will need at least one valve as well as a pump. A typical way to fill and empty without using two pumps would be to use valves to redirect the flow (something like the hydraulic equivalent of an H-bridge in electronics).Most ordinary water pumps will be simple centrifugal pumps (like fountain pumps or well pumps) that only pump in one direction.

author: gsingh11
author_rank: Contributor
timestamp: January 27, 2023, 02:53:16 am
content: but how can i control a valve electronically

author: themadhippy
author_rank: Super Contributor
timestamp: January 27, 2023, 03:01:15 am
content: Quoteyou rip the back of yer mums washing machine and nick the 2 solenoid valves on the water inlets

author: Infraviolet
author_rank: Super Contributor
timestamp: January 27, 2023, 03:04:12 am
content: Look up solenoid valves, many cheap sources online. Usually you run them using a relay, h-bridge driver chip or some other such circuit to keep the larger currents (0.5A to 2A perhaps for small valves) which drive the solenoid separate from your more sensitive other electronics. Some valves are available with latching characteristsics, others which only need active power either to stay open or stay closed.

author: xrunner
author_rank: Super Contributor
timestamp: January 27, 2023, 03:06:29 am
content: Quote from: gsingh11 on January 24, 2023, 07:23:32 pmWhy do you need a pump to drain the tank? Just open a port on the bottom and gravity will do the work.

author: gsingh11
author_rank: Contributor
timestamp: January 27, 2023, 03:25:27 am
content: I am using a motor driver already. should i use it with it or use a separate relay module.

author: james_s
author_rank: Super Contributor
timestamp: January 27, 2023, 04:05:58 am
content: Solenoid valves are one option, or you can get motorized actuators for ball valves, or hydronic heating zone valves. It really depends on the scale you're looking at. How much fluid do you need to move and how quickly? How high do you need to lift it? Does the pump need to be self priming? For something small I think I would just use two pumps, one to fill and one to drain.