pressure reducing valve

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Netmouse

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I've been pointed to the Watts 3/4" pressure reducing valve. What style is best? This will go in the main pipe where the water enters the house. My house pressure is 90. I see two styles that have a factory default of 50 psi at both Home Depot and Lowes -- FPT X FPT brass (LF25AUB-Z3). Or the MPT X FPT (LFN45BM1-U). They each have different openings sticking out the bottom.
 

Jadnashua

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The openings on the bottom are for access for maintenance, and most people never really do any. They are both lead free, which is required some places. http://media.wattswater.com/ES-LF25AUB.pdf http://media.wattswater.com/ES-LFN45B.pdf

They are both adjustable, if you want more or less pressure than the factory preset of 50. Code requires it to be reduced if it exceeds 80psi. What you set it to is up to you, but 50psi suits many fine, some like it stronger.

As you can see from the spec sheets, they are available in various pipe sizes and with various fittings on either end.
 

Netmouse

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Thanks Jim. I called Watts tech support and they said the LF25AUB-Z3 was a better quality and to go with that. The price is not much different.
 
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