Full flow ball valve for PEX???

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Eman85

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3/4" PEX supply line to home water heater instructions say full flow valve. I want to put a 1/4 turn ball valve on the water heater supply. Are the valves that have the crimp style PEX made on them OK or do I need to use a valve that's threaded and install brass adapters to PEX in it?
 

Jeff H Young

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A lot to debate on the subject but Sure a full port ball valve either barbed for pex or female threads both ends your choice.
 

Eman85

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Problem is I don't see any barbed end valves listed as full port or full flow. Obviously threaded 3/4" ball valves have a larger bore but it's all getting choked down with the adapter fitting and the PEX itself. Any recommendation on a barbed full port valve?
 

Jeff H Young

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I googled full port pex ball valve for water heater they come right up with 3/4 male on one side? I had no trouble finding them
 

Eman85

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I did the google and did see some. I saw Eastman is a double barbed PEX full port which is the same company as Sharkbite. I called them and they confirmed their valves are full port.
I only want to do this job once. I'm taking out a WH that was installed by "professionals", the more I know the more they did wrong.
I appreciate the responses and advice. I'm far from a plumber but worked in a trade all of my life and appreciate good correctly done work.
 

Jeff H Young

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I dont think it makes a hill of beans differance but double ended is my last choice unless you are connecting pex directly to the water heater and that would be my other last choice. I use corrugated stainless flex connectors and If I was using pex Id use a male adapter on the hot with 18 inch flex on cold Id put a barb x3/4 male full port ball valve followed by a 18 inch 3/4 nut x nut flex as well. Or on cold put a 3/4 barb x 3/4 male adapter and screw a standard 3/4 ball valve on followed by 3/4 brass nipple and then the flex to heater. Then if you evewr need to change ball valve you just unscrew it . the double barb is a ugly choice but Im just trying to make a clean install for you it reall dosent mater but the less plastic and those funky joints the better my opinion especialy when exposed but we insulate the first 5 foot here any way.
 

Eman85

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Yes, I'm going with 18" SS corrugated flex connectors. Can you put the ball valve right at the heater? Then the flex?
When you sat you insulate the first 5 foot does that mean you insulate the SS flex connectors also?
 

Jeff H Young

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The Flex goes at w/h then the valve. the insulation is california energy requirement most / or many guys dont put insulation over the flex but technicaly we are supposed to we mainly have gas water heaters and its supposed to be 6 inches away from the single wall vent connector so its generally not too strict on the connectors being covered I really dont like covering the connectors but mostly I do
 
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