Taco PRV leaking

LionA29 · March 2016

Found my Taco PRV 334 dripping throgh the threaded port at the bottom. Any fix or recommendation of a better replacement?
Thank you

Rich_49 · March 2016

http://www.taco-hvac.com/products/hydronic_accessories/pressure_valves/boilerfeed_backflow/index.html

http://www.taco-hvac.com/uploads/FileLibrary/102-107.pdf
Don't forget a backflow device .

Maybe just a new 334 .

http://www.taco-hvac.com/products/hydronic_accessories/pressure_valves/boiler_feed_valves/index.html

kevin_58 · March 2016

That threaded port is for relief valve, correct pressure problem and repl

4Johnpipe · March 2016

Any brand will drip if there is a pressure issue. Check that first. Is the expansion tank full?

LionA29 · March 2016

@4Johnpipe Do I remove tank to check if full of water?

Paul S_3 · March 2016

Yes...remove tank if its filled with water purchase a new one....if its not check the pressure in tank with a tire pressure gauge. ...it should be exact to your system fill pressure. If you get a new tank also check the pressure in tank sometimes there isnt enough...they come pre-charged at 12 psi....if your system requires a higher pressure use a bicycle pump to increase the pressure in the expansion tank

LionA29 · March 2016

@Paul S thank you, will check it out.

LionA29 · March 2016

@Paul S checked tank and it's not full. System off and Pressure in tank is 22PSI.( hydronic heating use for basement only)

4Johnpipe · March 2016

Make sure you check the tank pressure while it is disconnected / separated or depressurized and room temperature.

Taco PRV leaking

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