The Bray SA-2 external limit switch for Rite Series check valves provides remote indication of valve closed and fully open positions. Suitable for NPS 2" to 60" (50mm to 1500mm) valves; when equipped with two switches, it can separately provide open and closed status feedback and help identify partially open conditions that may cause premature wear, making it suitable for automated control systems.
Bray SA2 Series external limit switch product image
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Bray SA-2 Check Valve External Limit Switch
External limit switch for check valves with remote valve position indication
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Specifications
- Size Range
- NPS 2" to 60" (50mm to 1500mm)
Application scenarios
Remote position indication of Rite check valves in automatic control systems
The SA-2 limit switch is installed on Rite series check valves to remotely indicate the valve's closed and fully open positions to an automatic control system. When two switches are installed, they can separately indicate the closed and fully open states and help identify partially open conditions that could cause premature wear.
Selection points
Wide Size Range
The SA-2 limit switch for check valves is suitable for sizes from NPS 2" to 60" (50 mm to 1500 mm) and can be selected for use with check valves within this range.
Dual Position Indication for Fully Open and Fully Closed
Two SA-2 limit switches can be installed to indicate the valve closed position and fully open position, enabling remote confirmation of valve open and closed status.
Remote Valve Position Feedback
As an external limit switch, the SA-2 can remotely indicate valve position and flow status, making it suitable for automatic control systems.
Installation & maintenance notes
Configure Dual Limit Switches for Fully Open and Fully Closed Indication
When both the fully closed and fully open valve positions need to be indicated, two SA-2 limit switches should be configured, corresponding to the fully closed and fully open positions respectively.
Confirm the Valve Size Is Within the Applicable Range
When installing the SA-2 limit switch, confirm that the associated check valve size is within the applicable range of NPS 2 to 60 inches (50 to 1500 mm).
FAQ
How does the SA-2 limit switch provide remote valve position indication?
The SA-2 limit switch uses a sensing device installed on the valve to provide remote indication of the valve's closed and fully open positions, helping automatic control systems accurately determine valve position and flow.
Can two SA-2 limit switches be connected in parallel in the same system to improve indication reliability?
Yes. When two SA-2 limit switches are installed on the same valve, the first indicates the closed position and the second indicates the fully open position, reducing the impact of wear caused by partial opening on position indication.
What valve size range is covered by the SA-2 limit switch?
The size range is NPS 2 to 60 (50 mm to 1500 mm), covering most valve applications in automatic control systems.
What are the typical applications of the SA-2 Series limit switch?
It is suitable for automatic control systems that require valve position information and flow indication, helping achieve accurate process control and monitoring.
What key factors should be considered during selection to ensure system compatibility?
Consider the valve size, the installation position and electrical interface of the limit switch, and the system's requirements for remote position indication to ensure accurate valve status feedback and reliable operation.