Installing water pressure gauge on 3/4" PEX

[Kevin121]

I am planning to install 2 water pressure gauges for a whole house water filter system I am putting in. My supply line is 3/4" PEX and the only pressure gauges I can find are 1/4" NPT (link below) fittings. What adapter(s) do I need to connect the pressure gauge to a 3/4 " tee that is plumbed inline? I would like to avoid Sharkbite fittings if possible. Thanks in advance.

https://www.amazon.com/gp/product/B07T1YGJYG/

 

[WorthFlorida]

Brass fittings are made. You'll need a 1/4" NPT to 1/2" NPT adapter. Use a 3/4 x 1/2 x 3/4 tee.

https://www.homedepot.com/p/Everbilt-1-2-in-MIP-x-1-4-in-FIP-Brass-Bushing-Fitting-802639/207176802

 

[Sponsor]

 

[Reach4]

How about a gauge into a bushing into a 3/4 pex drop ear tee?

https://www.supplyhouse.com/Bluefin-BRB075-025-3-4-x-1-4-MIP-x-FIP-Brass-Bushing-Lead-Free
https://www.supplyhouse.com/Raven-PXDT0034-NL-3-4-PEX-x-3-4-Female-Drop-Ear-Tee-Lead-Free
https://www.supplyhouse.com/Winters...auge-1-4-Back-NPT-w-Brass-Internals-0-100-PSI

Liquid-filled gauges are a little more, but have some advantages.

 

[Kevin121]

Thank you both for the links!

 

[Kevin121]

Dumb question but I'm not finding 3/4" PEX by 1/2" NPT by 3/4" PEX tees. Can anyone share a link of where I can find one, or do I need another adapter go to from NPT to PEX for the 1/2" fitting?

 

[Reach4]

or do I need another adapter go to from NPT to PEX for the 1/2" fitting?

Since you can get a 3/4 to 1/4 FIP bushing, you can mount the gauge to the 3/4 FIP easily.

You can also get 4 inch gauges for easier reading, but that is probably overkill.

Another option is to install boiler drain valves, and you can mount a garden hose thread pressure gauge when you want to take a pressure reading. This lets you sample the water at that port.

 

[Kevin121]

Ok another dumb question - I bought a 3/4" to 1/4" brass bushing for the 1/4" pressure gauge. The gauge only screws in about half way by hand before it stops turning. Should I be tightening this down more with wrenches or will this be ok with Teflon tape applied?

 

[Terry]

You won't be bottoming out the threads.

 

[Kevin121]

So just tighten by hand until it's snug? Just wanted to make sure this was to be expected.

 

[wwhitney]

On bigger sizes (1/2", 3/4"), it's hand tight plus 1-2 turns with wrenches. Not sure about 1/4", but hand tight isn't enough.

Cheers, Wayne

 

[Terry]

So just tighten by hand until it's snug? Just wanted to make sure this was to be expected.

I normally put a wrench on things. I don't do hand tight on tapered threads.