1/2" FNPT x 1/2" FNPT Union Pressure Reducing Boiler Fill Valve with Pressure Relief Valve Taco
1/2" FNPT x 1/2" FNPT Union Pressure Reducing Boiler Fill Valve with Pressure Relief Valve Taco
1/2" FNPT x 1/2" FNPT Union Pressure Reducing Boiler Fill Valve with Pressure Relief Valve Taco
100%
1/2" FNPT x 1/2" FNPT Union Pressure Reducing Boiler Fill Valve with Pressure Relief Valve Taco
1/2" FNPT x 1/2" FNPT Union Pressure Reducing Boiler Fill Valve with Pressure Relief Valve Taco
1/2" FNPT x 1/2" FNPT Union Pressure Reducing Boiler Fill Valve with Pressure Relief Valve Taco
1/2" FNPT x 1/2" FNPT Union Pressure Reducing Boiler Fill Valve with Pressure Relief Valve
Brand: Taco
Part#: 334-T3
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Description

Taco 334-T3 boiler feed (fill) valve combines a pressure reducing valve and a pressure relief valve into one assembly. Features cast iron body and 1/2" threaded inlets.
This boiler feed valve combination is used to automatically feed water to a system whenever the pressure in the system drops below the pressure setting of the valve. The pressure relief valve is factory set to 30 psi.

Features:
  • Fast Fill Rate
  • Exclusive Fast Fill Lever Lock
  • Built-In Check to Prevent Emptying the System if Incoming Pressure Fails
  • Adjustable Set Pressure of 10 to 25 psi
  • Pressure Setting Adjustment Separated from Fast Fill Lever for Easy, Fast Adjustment.

Technical Specifications:
  • Inlet: 1/2" Threaded (Union)
  • Outlet: 1/2" Threaded
  • Maximum Fluid Temperature: 212 F
  • Maximum Supply Side Pressure: 100 psi
  • Operating Pressure Range: 10 - 25 psi
  • Pressure Relief Valve is Set To: 30 psi
  • Factory Setting (System Side): 12 psi
  • Materials of Construction: Cast Iron
  • Weight: 3.9 lbs
  • Dimensions: 7-3/8" wide x 5-1/8" high

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Good valve
Overall this is a good assembly and works as advertised. The selection lever for Auto or Open would be greatly improved by adding a detente to the auto position. It is too easy to slide the selector partially open which could cause over pressurization.
By Scott (from Cedarville, MI) on 10/01/2021
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5/5 taco makes good products
works exactly as it should
By timothy (from Scotia, NY) on 02/16/2021
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fill-it
great value
By valentine (from Crownsville, MD) on 10/12/2018

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