H-TEC Model 990
A newly installed air release valve is being commissioned. As the valve opens, the escaping air is clearly audible.
Testing Air release valve series 986
The venting function of a 986 valve is being tested here using a disposable glove.
Model 986 in Texas
The Model 986 is in operation, and its high venting capacity can be clearly heard.
The large Model 988 air release and vacuum valve in intake operation
The large Model 988 is in operation, and its high air intake capacity can be clearly heard.
Max. operating venting: 258,97 cfm (440 m³/h)
ventilation cross-section: 12,63 in² (8.150 mm²)
The large Model 988 air release and vacuum valve in venting operation
The large Model 988 is in operation. The high venting capacity is clearly audible.
Max. operating venting: 258,97 cfm (440 m³/h)
ventilation cross-section: 12,63 in² (8.150 mm²)
On pipe in Texas
Here is an installation example showing how the Model 986 valve can be installed in a system.
Outdoor installation type 986
Here is an installation example showing how the Model 986 valve can be installed in a system.
Outdoor installation type 986
Here is an example of how a valve can be installed underground. The valve is covered with a street box.
Outdoor installation type 985 (Vancouver Island)
Example of an underground installation of an air release and vacuum valve with an underground assembly near a beach area. After installation, the valve is backfilled and remains completely below ground level.
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