Brochure

85
Vents
Hoffman Specialty
®
Vents
Model 76 Part No. 401432
Vacuum Valve
• Float-type themostatic vent
• For medium and large one-pipe vacuum systems
• Single non-adjustable port
•
1
⁄2" NPT female and
3
⁄4" NPT male straight shank
• Install 6-10" (150-250mm) above horizontal return and
8" (450mm) above the boiler water line
• Maximum operating pressure 3 psig (0.2 bar)
• Maximum pressure 15 psig (1.0 bar)
Vacuum Valve
Model 76
2
1
/2"
(64mm)
5
3
/4"
(146mm)
Installation
To prevent steam vents from sputtering water or damage
from water hammer, observe the minimum elevations
shown.