Read all of the information in this Venturi Air Valve Installation Guide prior to installation.
Before you begin
Unpack the valve from the shipping container in the area where
you want to mount the valve and verify that the tag number on the valve matches
the mechanical engineering schedule.
- The central cone shaft extends out of the valve body outlet opening when it is in the fully open position. Do not stand a Venturi Valve on outlet opening side when it is in the fully open position.
- Do not carry a valve by the linkage, cone bracket, or any other control component that is mounted onto or into the valve body.
To verify the size, flow range, and orientation of the valve,
compare the data on the valve label to the specifications listed on the schedule
or architectural drawings.
Note: Valve outside diameter dimensions are sized to fit inside standard spiral and flexible duct.
Install all pressure independent valves horizontally or vertically
based on submittals, drawings and specifications.
Note: You cannot interchange or substitute the horizontal, vertical up, and vertical down valves for each other.
- Make sure to install the valve so that air flow direction corresponds to the arrow on the valve, for example, from short cylindrical section to longer cylindrical section. To verify the cone direction, check the label on the valve and compare the arrow on the label to the direction of cone. The cone moves freely forward and back in the direction that the arrow points.
- Before you mount the valve to the duct work, verify the direction of flow within the duct and align the valve accordingly.
Install a hanger stock to support the duct work within 12 in.
(305 mm) of the valve connection. Install the valve onto the duct after hanger
stock is in place. For precise operation, ensure the valve is level after
- The actuator and linkage operates in any position, it is not affected by the orientation of the installation. However, for future maintenance and adjustments, do not position the linkage or the valve with the actuator completely face down as potential condensation can run into the actuator. Allow a minimum of 14 in. (356 mm) of unobstructed space around the valve for best access.
- Do not position the electronic components below the valve in case of duct condensation build up.
- To provide for possible future changes, that require re-set of air flow, maintain 5.75 in. (146 mm) of unobstructed space in the duct on the valve's outlet side for the shaft to reach the maximum flow position.
- When equipped with an electric actuator, you need 24 VAC, separate from the controller, to power it. See Wiring options for more information.
- Do not use metal screws longer than 0.75 in. (19.05 mm) and do not screw them more than 1 in. (25.40 mm) from either end of the valve.
Seal all duct connections, in accordance with local codes, to
prevent leaks and provide the highest duct static pressure.
- Use ASHRAE approved duct sealant on all valve and duct connections or flange gaskets for circular flanges. Do not use a sealant that prevents valve removal.
- Do not remove or paint over the ID and calibration tags.
- Follow the appropriate installation diagram.
- Unless you specifically order for a particular job, Johnson Controls does not provide screws, fasteners, duct sealant, hanger stocks, companion flanges, or gaskets.