If my pressure gauge is in the red should I replace it?

Before replacing any "regulator", know or have a good idea what your pressure is. Is the pressure coming from your faucet strong to very strong? If it is, then more than likely the gauge is correct. Having owned one of those Camco's, It is not a regulator of pressure, only of flow and I suggest you buy a new "true regulator". They have a brass body (normally), with a black plastic cylinder and numbered gauge sticking up above the hose connections. All the one's I have seen come with instructions on how to set them to your preferred water pressure MAXIMUM or less if you prefer. That setting does not allow the water pressure to rise above that limit to do damage to your RV. I have mine set a little high to compensate for the high calcium water we have which in my mind helps it through the filter. On the discharge of my water filter it is below 40psi. And it just so happened to come at that setting. Check what your RV (or house) is built for and set it to those factory specifications or just slightly under. True regulators cost significantly more than the fake ones that just control flow and protect nothing. There are several on Amazon that are between $25 & $40. Pick one with a good rating and a high number of reviewers and you should be OK. Remember, all equipment wears out and don't be surprised if you need to replace this unit after 5 or 10 years of use. If your regulator gets caught in a freeze, replace it immediately for the chances it surviving is very slim even if it does not leak.

I live in a place where sometimes we do not have water for days and I want to be able to see when there is water coming, is this a good option?

This device is a combination regulator / water guage. It limits flow to 40psi at the output. If all you want is to see if you have water pressure go look for just the water pressure guage.

ASIN	B000EDQQD8
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#42,137 in Automotive ( See Top 100 in Automotive ) #113 in RV Freshwater Hoses & Fittings
Brand	Camco
Color	Brass
Customer Reviews	4.6 4.6 out of 5 stars (4,026)
Date First Available	September 14, 2005
Exterior Finish	Brass
Finish	Brushed
Global Trade Identification Number	00014717400640
Handle Material	AS PICTURED
Included Components	(1) water pressure regulator
Inlet Connection Size	0.75 Inches
Inlet Connection Type	Press
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	6.4 ounces
Item dimensions L x W x H	2.4 x 4.1 x 5.8 inches
Item model number	40064
Manufacturer	Camco
Material	Brass
Maximum Operating Pressure	125 Pound per Square Inch
Number of Ports	2
Outlet Connection Size	0.75 Inches
Outlet Connection Type	FNPT
Part Number	40064
Pattern	Water Pressure Regulator w/Gauge
Power Source	hand_powered
Product Dimensions	2.4 x 4.1 x 5.8 inches
Shape	Rectangular
Size	One Size
Specification Met	CSA lead-free content certified to NSF/ANSI 372
Style	Brass with Gauge
UPC	014717400640
Warranty Description	1 year limited

Camco Brass Water Pressure Regulator with Gauge- Helps Protect RV Plumbing and Hoses from High-Pressure City Water - Easy Read Gauge (40064)

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