For automatic venting of a closed system to atmosphere when a vacuum is created. The Watts N36-M1 Vacuum Relief Valve permits air to enter and prevent vacuum conditions that could siphon the water from the system, resulting in collapse of a tank or water heater or equipment burn out.
SPECIFICATIONS
A Watts Model N36-M1 Vacuum Relief Valve shall be installed on domestic hot water supply tanks/ heaters/unit heaters/ steam kettles as indicated on plans. The vacuum relief valve shall be ANSI Z21.22 rated and CSA certified. The vacuum relief valve shall have an all brass body and include a protective cap.
APPLICATIONS
- Domestic water heaters and supply tanks
- Table top heaters
- Jacketed steam kettles
- Unit heaters
- Low pressure steam systems
- Steam coil heaters
Note: Vacuum relief valves are not designed or approved as back-siphonage backflow preventers. For protection against back-siphonage install Watts Series 288A vacuum breakers.
MATERIALS
PRESSURE/TEMPERATURE
Maximum steam working pressure:15 psi (1.03 bars)
Maximum temperature:250°F (121°C)
|
FEATURES
- Low profile
- All brass body
- Protective cap
- Suitable for low pressure steam and water service
- Tested and rated to ANSI Z21.22
- CSA certified
Figure 1
Domestic Hot Water Supply Tanks and Heaters
with Top Supply
STANDARDS
Tested and rated to ANSI Z21.22
CSA certified
CAPACITY
| Size (DN) |
Model |
Ventaing Capacity |
| in. |
mm |
CFM |
LPM |
| ½ |
15 |
N36-M1 |
15 |
425 |
| ¾ |
20 |
N36-M1 |
15 |
425 |
|
