1/2” Union FNPT Dual Check Backflow Preventer Valve w/ Atmospheric Vent

The 12-760 from Zurn is a 1/2” Union FNPT Dual Check Backflow Preventer Valve w/ Atmospheric Vent. It's used to protect boiler fill water lines by preventing the reverse flow of polluted water into the potable supply lines. 

Installation: Can be installed in a horizontal or vertical position downstream of shut-off valve and in available location for supporting servicing. Not pipe the vent port directly into drainage ditch, sewer or pump.

Technical Specifications:

• Connections: 1/2" Union Female NPT x Female NPT
• Max working water Pressure (PSI): 175
• Max working water Temperature (F): 210
• Main valve body: forged brass
• Springs: Stainless Steel, 300 Series .