

🚰 Upgrade your flow with confidence—Aqua Pro keeps your water moving flawlessly!
The Aqua Pro (20818) 1/2" x 1/2" Male Check Valve is a compact, brass plumbing valve designed as a direct replacement for Marshall Brass and Hydronamic products. It features 1/2 inch male pipe threads, is made from non-toxic, food-grade materials, and meets rigorous IAPMO and NSF certifications, ensuring safe and reliable water flow. Highly rated by professionals and DIY enthusiasts alike, it offers durable performance in a sleek, easy-to-install package.
| ASIN | B00K24EA3M |
| Best Sellers Rank | #194,181 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #423 in Check Valves |
| Brand | Aquapro |
| Color | Brass |
| Connector Type | Threaded Fitting |
| Customer Reviews | 4.8 4.8 out of 5 stars (324) |
| Date First Available | May 1, 2014 |
| Exterior Finish | Brass |
| Global Trade Identification Number | 00088805208180 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.4 ounces |
| Item dimensions L x W x H | 3.7 x 2.9 x 1 inches |
| Item model number | 20818 |
| Manufacturer | Aqua Pro |
| Manufacturer Part Number | 20818 |
| Material | Brass |
| Model | Aqua Pro (20818) 1/2" x 1/2" Male Check Valve |
| Number of Pieces | 1 |
| Product Dimensions | 3.7 x 2.9 x 1 inches |
| Size | 1/2 Inch x 1/2 Inch |
| Thread Size | 0.5 inch |
| Thread Type | NPT or UNF |
| UPC | 088805208180 |
A**M
RV Water Heater Part
This worked well and we ordered two for our RV after no local RV dealer had one in stock. Luckily Amazon came through and we had the part in a few days. Now we have a spare if it happens again.
S**T
Ok
It’s a good replacement
J**K
Great fit
Great fixed my issue with no hot water.
M**X
Works as it should
Works as it should
D**S
Exactly like original.
Used this to replace faulty check valve in a friend's motorhome. Works just like it should.
T**L
One way water flow
Works as designed- plain & simple
D**W
It did the job
I needed a check valve for my travel trailer's water heater. It is needed for winterization. It worked as it should. The brass body is what drew me to this check valve over other options.
M**H
Hot Water
Our RV lost hot water pressure, it would give a very short blast, than nothing. I searched on the issue to find this pressure release valve was the problem. They were right, the little cap that held the spring was gone. Apparently the pieces fall into the tank and will flush out at some time, nevertheless RV has constant hot water pressure. Good quality, sealed right up and works great.
O**O
Well made. Thanks
G**Y
works very fine recommended...
D**L
Très bien
G**7
Met my expectations.
L**W
Was a perfect replacement for the hot water tank in my RV.
Trustpilot
1 month ago
1 week ago