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Best Compression Union Reducers

Watts 63190 Backflow Preventer 1/2"
1 / 2 FIP ends with atmospheric vent. Enter your model number to make sure this fits.
Reviews
"easy to install & worked perfectly."
"Good quality product and reasonable price."
"Works without any problems."
"I was just what I ordered and was just fine."
"These backflow preventer's are not junk this unit was perfect for my application it's made of 100% brass very nice unit ."
"Arrived on time, and in excellent condition."
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Woodford 37HA-BR Backflow Preventer, Brass
Anti-siphon vacuum breakers are designed to protect hose connections from contamination. For multiple exterior finish applications such as lap siding, stone, stucco or brick.
Reviews
"Worked as expected."
"The product was a perfect replacement!"
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Woodford 50HA-BR Backflow Preventer, Brass
Anti-siphon vacuum breakers are designed to protect hose connections from contamination. For multiple exterior finish applications such as lap siding, stone, stucco or brick.
Reviews
"Hard to find...easy to fix."
"Exactly what I needed and exact fit!"
"Husband ordered it so I'm assuming it works fine."
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Best Compression Union Fittings

Wilkins 1-975XL Backflow Preventer
The Wilkins 1\" 975XL Reduced Pressure Backflow Preventer is designed for installation on non-potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable water supply. A tried and true design favored by installers worldwide.
Reviews
"I bought this Wilkins 1" 975XL Reduced Pressure Backflow Preventer - (bronze) , I reached local contractor/shops every one was costing a fortune. Wilkins 1" 975XL Reduced Pressure Backflow Preventer. Sold by Low Overhead Door. -- apparently it is displayed under different seller under amazon so adding this info for the web users."
"Replaced my corroded 20 year old unit with this, same size and dimensions as my old 975XL made for an easy swap."
"It replaced an eleven year old Wilkins 975 that failed the annual inspection."
"seems to be working fine."
"Due to the flow of water, it had to be installed with the test ports facing away from the tester."
"My old one broke when we had a bunch of days and nights of below freezing weather in a row and I knew a plumber would charge an arm and at least half a leg for one, plus the rest of that leg and another to install it."
"purchased 2 months ago and installed right away."
"I expected a fully functional back flow valve that I just could install."
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Best Compression Union Straights

Parker A-Lok 6SC6-316 316 Stainless Steel Compression Tube Fitting, Union, 3/8" Tube OD
The Parker A-Lok 10SC10-316 compression tube fitting is made of type 316 stainless steel and connects to tubing on both ends. Pipe and tube fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. Type 316 stainless steel for higher strength and greater corrosion resistance than type 304 stainless steel.
Reviews
"For a few dollars more than that piece of aluminum crap that is marketed as an aluminum ac line splice which leaks on 3/4 of the reviews."
"Replaced my rack and pinion on a 2000 Impala LS and if you ever have, you know what I'm talking about trying to get to the lines to the rack and pinion."
"Worked great on high pressure hydraulic line."
"Used this for my Hutch Mod on a 2002 Ford. F-350 ."
"I ordered the wrong size and had to return it, but it was well made and solid stainless steel as described."
"took way to long to get here but worked great once it did."
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