Simple Set Max Pressure Independent Control Valve
Product Information
| Product Name | Simple Set Max |
|---|---|
| Manufacturer | Bray Controls Commercial Division |
| Address | 13788 West Road, Suite 200A Houston, Texas 77041 |
| [email protected] | |
| Phone | 1-888-412-2729 |
| Website | www.braycommercialdivision.com |
| Date of Manual | 09/14/22 |
Product Usage Instructions
Trapped Air Extraction in Pressure Independent Valves
During the normal operation of hydronic systems, pressure
independent valves may trap air in the pressure balancing part of
the valve. If the air is not removed, one of the effects is a valve
that may pulsate with a mild or violent shaking force. There are
simple procedures for removing this trapped air in the Simple Set
Max pressure independent valves.
Air Removal
- Identify the trapped air in the valve.
- Follow the simple procedures provided by Bray Controls
Commercial Division to remove the trapped air. - Repeat the air removal process if necessary.
Piping in Parallel
To achieve flows larger than the specified valve capacity, it is
recommended to connect two valves in parallel leading to a common
manifold. The valves should be connected so that they utilize one
common control signal in parallel (2-10 VDC) and the two valves
will control the flow in an identical pattern. The resulting flow
will be double, controlled by an individual valve. The alternative
of using a split signal will be less stable, result in less
accurate flow, and likely cause feedback signal errors.
Air Vent Hot or Chilled Water Coil
When installing the valve, ensure proper airflow by following
the below diagram:
Note: Tee, Strainer/Shut-Off Valve, and Air Vent are essential
components for proper airflow.
Bray Controls Commercial Division 13788 West Road, Suite 200A Houston, Texas 77041
Phone: 1-888-412-2729
www.braycommercialdivision.com
© 2021 Bray International, Inc.
09/14/22
Simple Set Max — Application Guide
Trapped Air Extraction In Pressure Independent Valves
During the normal operation of hydronic systems, pressure independent valves may trap air in the pressure balancing part of the valve. If the air is not removed, one of the effects is a valve that may pulsate with a mild or violent shaking force. There are simple procedures for removing this trapped air in the Simple Set Max pressure independent valves.
To vent trapped air, the valve needs to be cycled closed, wait 10-15 seconds, and then open it. This exhausts air out of the diaphragm chamber and into the pipe where it can later rise to a high point for extraction. In a building with several valves, it is most convenient to perform this from a central building automation control. We recommend sequentially closing one valve at a time to minimize the disruption to occupants. If the building is not occupied it is acceptable to cycle all of the valves at once as long as there is a method in place to keep the system pressure differential to within the valve differential pressure range.
Air Removal
Trapped Air
Air Removal Trapped Air
Air Removal Trapped Air
1
2
3
Piping in Parallel
To achieve flows larger than specified valve capacity, it is recommended to connect two valves in parallel leading to a common manifold. The valves should be connected so that they utilize one common control signal in parallel (2-10 VDC) and the two valves will control the flow in an identical pattern. The resulting flow will be double, controlled by an individual valve. The alternative of using a split signal will be less stable, result in less accurate flow and likely feedback signal errors.
Air Vent Hot or Chilled Water Coil
FLOW
Tee FLOW
Strainer/Shut-Off Valve/Air Vent
FLOW
