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Specifications:
Rated power: 5W, no need to divide the positive and negative poles
Working mode: quota system (that is, intermittent cycle work system, the longest continuous work for about 4 hours, can continue to work after stopping for ten minutes, there will be danger of burning coils for more than four hours)
Use fluid: (0-100 ° C) water
Flow characteristics of water: 0.02Mpa>1.5L/min; 0.10Mpa>7L/min; 0.30Mpa>12L/min; 0.80Mpa>20L/min
Insulation performance: The insulation resistance between the conductor and the non-conductor is greater than 100MΩ
Insulation class: Class E insulation
Service life: ≥500,000 times (laboratory data), ≥300,000 times (actual normal use)
Valve type: diaphragm (operated by Servo)
Usage: water and low viscosity fluids
Material: metal + plastic
External thread diameter: approx. 20mm
Screw hole pitch:25mm
Size: approx. 84 x 57mm (L x H)
Coil size: approx. 34 x 23mm (W x H)
Unit conversion: 1mm=0.039inch
Note:
Manual measurement, with small error. Please check size in detail before purchase.
Real colors may slightly differ from the pictures, as it depends on specific monitor settings and light brightness.
We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution.
Package Includes: 2Pcs
Gregg Morrison
Reviewed in the United States on March 3, 2025
First, these are priced right, but I wouldn't expect the plastic valve body to last as long as a Brass valve body. I did a lot of research to check the thread specs and these are 1/2 inch, but they are British (International) 1/2 inch and not NPT (US Standard). Similar, but a different thread pitch and profile, so yiu COULD force an NPT fitting on these plastic threads, but it will ruin the threads and will likely leak. You need a 1/2 inch adapter - 1/2 NPS Female - for the input (the side with the power terminals) and the same - 1/2 NPS Female - for the outlet side. NPS fittings requires a Rubber sealing washer, much like your garden hose does because the threads DON'T seal, like NPT does. MY PROJECT: I'm using these in a custom-made three-zone hot water recirc system, and I'm using 1/2 inch PEX for my return (recycle) lines. So I bought 1/2 inch Female NPS to 1/2 inch NPT Male adapters, and 1/2 inch NPT to 1/2 Inch PEX adapters. So the overall length - with adapters - is 8 inches! With these adapters included, the cost per Valve - the REAL COST - is over $25 per valve. So it's going to take awhile to recover the cost (from not wasting 4 gallons of water waiting for actual Hot water). MOUNTING: The four mounting posts under the valve have small unthreaded holes, so I suggest you pre-drill them to accept your own screws. The mounting posts are accurately Square, with post center to center at exactly 25 mm. That's just a smidge (2/125) under an inch. One inch will work, though. I'm going to buy some spare Solenoid Valves for if (when) these fail. I'll be looking for Brass ones now.
Customer
Reviewed in the United States on February 15, 2025
These worked great to fix a pedicure chair
Joshua Archer
Reviewed in the United States on September 6, 2024
under
Treg Townsend
Reviewed in the United States on May 7, 2024
Got this for a project and it seems to work when I quickly tested it.
M. Urbanosky
Reviewed in the United States on May 4, 2023
I use them for my greenhouse and converted a sprinkler controller to 12v dc for their operation. Don’t forget the diode block!!! These only hold pressure in the forward direction so back flowing will allow slippage. Will post a YouTube (under the valve name) on installing soon.
Paul W.
Reviewed in the United States on August 27, 2022
I bought this pair to hook up to an ESP32, to run the drip misters on my ferns and roses. Managed to get them running on the same PSU. Wired in a flyback resister and they're perfect. Honestly I have treated them like total crap - I just 3D printed a little cap to keep the connectors covered, and left them exposed to the elements - and they're still going strong, cycling several times per day, 3 Southern summers later.Lots of misunderstandings among the reviews here, people are not reading the specs fully. You do need a minimum pressure for it to work, I use ~25psi and it's fine. Also the solenoid is cooled by the water flowing through - if you run it dry, you will burn it out quickly.I'm writing this because I came back to but a few more pairs, create a few mini-manifolds around my yard.
Emerald Bixby
Reviewed in the United States on July 22, 2021
I'm usually not inclined to leave critical reviews, but I was sent two valves instead of three as advertised, which is a significant error and always kills my willingness to buy again from the same seller. That said, I only needed one for the intended application (DIY swamp cooler water flow control), and the valve I used tested fine and is working fine now. It's wired to a simple switch so that I can operate the externally mounted swamp cooler from inside my truck (specifically deciding whether to have water flowing or not or just operate the fan, which I have on a separate switch), and I'm glad I decided to go ahead and add this feature instead of having to get out (and thus lose cool air) to manually turn the water flow on and off.They seem to be well manufactured and the sizing is all correct, so they matched with the adapters etc. I got to connect them to the tubing I chose. (Disclaimer: I only tested the function of the valve I used, and didn't bother testing the other one, but it's a solenoid valve, it's not like they're easy to mess up, so I'm sure it's probably fine.) Looking forward to using the other one for any of a few future projects. And to be fair, at this price point, two for the price was still the best deal on Amazon. Just not inclined to rate highly when three are advertised and two are sent.
Big Mike
Reviewed in the United States on June 5, 2021
These worked great for my 20 gallon sprayer which I made to control the wand or the boom and split the boom left and right spray
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