John Guest 3/8 Inch OD x 3/8 Inch NPT Straight Adapter, Push to Connect Plastic Plumbing Fitting, PP011223WP

The Milwaukee 4-Gallon sprayer is a wonderful invention but a small design flaw with the final connector that seperates the fluid suction to the plastic tank is this plastic peice. Somehow milwuakee did not fully pass the R&D testing and this peice does indeed fail and leaks. The simple fix is a 1/4" tube that could have plugged into this and onto the recieving pump adapter and all leaks go away. The threads are simply not rated to spec on the milwuakee plastic molding. Your best to just dremmel it off and use this peice. $5 and your backpack sprayer will be leak free. Easy to install. Be sure to grab some 1/4" tubing as well. You only need half an inch but you will need to buy a spool of it for a few bucks.

John Guest fittings work with PEX, CPVC, and copper tubing . The important word in that sentence is WORK , I'm a big fan of PEX because it is flexible, CPVC and copper are not, but properly installed JG fittings do a foolproof, leakproof ,job that anyone with a tape measure , proper cutting tool, and a DYS attitude can be proud of ,using any of the three materials. JG fittings have other big plus going for them, they are removable, and reusable , never corrode, are very cost effective, and come in a wide range of fittings, in every size. SO no plumber, no wrenches, no soldering, no taping, etc etc VS snip , push,click and done. PS Amazon sells PEX tubing, PEX cutters, CTS [copper tubing] cutters, sent to your door , every thing you need , Personally I'd rather have a root canal than spend hours in a BIG BOX store trying to find what I need , getting only 1/2 my list and all the aggravation !!!

TLDR: 🌟🌟🌟🌟🌟 John Guest products make DIY water line installations a breeze, offering professional-grade results. As I've embarked on DIY projects at home, particularly installing water lines to my filtration system, I've found John Guest fittings to be indispensable. These fittings are incredibly user-friendly and make the installation process so straightforward, they almost make me feel like a seasoned plumber. The ease of use is a huge plus for someone who doesn't do plumbing work full-time. With John Guest products, the task becomes less daunting and more enjoyable. The quality of these fittings is top-notch, making them my go-to choice for such projects. They truly stand out as the best in the market for DIY water line installations.

Perfect

Good buy

Always prefer John quest. I have one of those under the sink RO systems that was built like Johnny cash's Cadillac: 1 piece at a time. It's a nightmare to think abt - needing all manner of parts, reducers, etc. John quest parts are known for their durability, they don't leak, work well w other parts, & install easily.

Trusted John Guest for years but this one failed from the start. Trimmed and reinserted tubing 3 times and still would not seal. Changed to an elbow fitting and immediately sealed.

John guest item is high quality.

Product did exactly what it says. Just push the tube In until it bottoms out and you will have leak free connections. It is important to make clean square cuts on your tubing. I used a tubing cutter for this.

The product fits great, I like it. I just want to suggest that it would be even better if it is wrapped with plumber's tape. When I got it, it fits fine, but it has tiny leaks. So I asked around, and people told me that I have to wrap it with plumber's tape. That resolves the problem. But it would be great if the product already had plumber's tape wrapped around it so I don't have to rush into canadian tire to get one.

Threads arrived stripped dont buy cheap garbage not made in Canada or America dont buy

Wrong size ! Says it's 3/8 but isn't more towards half inch.