Bray SA16 (A16) is an external counterweight and lever accessory for Bray Rite Series single-door swing check valves, suitable for wafer-style or flanged valves in sizes from NPS 2" to 24". By adjusting the counterweight position on the lever arm, the opening pressure, disc closing force, and closing characteristics can be adjusted. It is suitable for wastewater, solids handling, and vacuum system pipelines.
Bray SA16 Series external weight and lever accessory product image
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Bray SA16 Check Valve External Counterweight and Lever Accessory
External counterweight and lever for check valves, suitable for wastewater and solids-handling pipelines
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Model confirmation
Confirm model, connection and key options before ordering.
After-sales support
After-sales communication support is provided according to the order agreement.
Specifications
- Compatible Nominal Size
- NPS 2" to 24" (50 mm to 600 mm)
- Compatible Valve Type
- Single-door swing check valve
- Compatible Valve Connection Type
- Wafer or flanged
- Opening Pressure Adjustment
- Can be lowered or increased by adjusting the counterweight position on the lever arm
- Closing Characteristic Adjustment
- Adjustable disc closing force and valve closing characteristics
- Counterweight Mounting Method
- External counterweight and lever, with the counterweight mounted to the valve shaft through a hexagonal connection
Application scenarios
Wastewater Treatment Pipelines
For pipelines in wastewater treatment systems equipped with Bray Rite series single-door swing check valves. The SA16 external counterweight and lever allow on-site adjustment of valve opening pressure and closing characteristics, while providing the torque required to close the valve.
Solids Handling Pipelines
For pipelines in solids handling systems equipped with Bray Rite series single-door swing check valves. The SA16 external counterweight and lever can adjust opening pressure and disc closing force by repositioning the counterweight to suit applications requiring adjustable closing characteristics.
Vacuum System Pipelines
For piping sections in vacuum systems equipped with Bray Rite series single-door wafer or flanged swing check valves. The SA16 provides the torque required to close the valve through an external counterweight and allows adjustment of opening pressure and closing characteristics within a certain range.
Selection points
External counterweight adjusts opening pressure and closing characteristics
By adjusting the position of the counterweight on the lever arm, the disc opening pressure can be reduced or increased within a certain range, while the disc closing force and valve closing characteristics can also be adjusted.
Hex-drive valve shaft connection to external lever
The SA16 disc, hinge, and valve shaft connection feature a hex-drive design. The external lever and counterweight are mounted to the valve shaft via a hex connection to transmit the torque generated by the counterweight.
Through-shaft and anti-friction ball bearing support structure
The valve shaft passes through the valve body, supported by the valve body at one end and by an internal bushing and an anti-friction ball bearing mounted on the opposite bracket at the other end.
Dimensions and connection types compatible with Rite single-door swing check valves
SA16 is compatible with Rite series single-door swing check valves from NPS 2 in. to 24 in. and can be used with wafer or flanged connections.
O-ring seal at valve shaft penetration
An O-ring seals the valve shaft, sealing bushing, and valve body to prevent leakage.
Installation & maintenance notes
Adjust the external counterweight to the specified position
The external counterweight is mounted to the valve shaft via a lever. Adjusting its position on the lever arm can reduce or increase the disc opening pressure and adjust the valve closing force and closing characteristics.
FAQ
How does the SA16 external counterweight and lever affect the opening pressure of a check valve?
The SA16 changes the torque required to open the disc by adding an external counterweight and adjusting its position on the lever arm, enabling precise opening-pressure adjustment. The specific configuration should be confirmed based on the on-site model and application conditions.
What connection types and size range are applicable to the SA16?
The product specification sheet indicates a size range of NPS 2" to 24" (50mm to 600mm), with models including 205, 211, and 212, for wafer or flanged single-door swing check valves.
How does the SA16 prevent leakage and maintain sealing performance?
O-ring seals are used between the valve shaft, bushing, and valve body. Combined with structural support through the valve shaft and low-friction ball bearings on the opposite bracket, this reduces leakage risk and maintains smooth operation.
What are the primary application scenarios for the SA16?
It is used in applications requiring flexible on-site adjustment of closing characteristics. The counterweight generates the required torque to control closing performance and is suitable for single-door check valves requiring opening-pressure adjustment. The specific configuration should be confirmed based on the actual model and application conditions.
What is the key difference between the SA16 and standard Rite Series check valves?
The SA16 is a modified version of the standard Rite Series single-door check valve, incorporating an external counterweight and lever mechanism. Its disc, hinge, and valve shaft use a hexagonal drive design, allowing fine adjustment of opening pressure on site through the counterweight position. The specific configuration should be confirmed based on the actual model and application conditions.