Selector and lockout valve mistake-proof design features
Valve assemblies are described having a valve positioner, a ball valve assembly configured to be actuated by the valve positioner between an open state and a closed state, an indicator configured to provide visual indication of the state of the ball valve assembly, and a positioning pin configured between the valve positioner and the ball valve assembly, the positioning pin arranged to prevent installation of the valve positioner to the ball valve assembly in all but one orientation and to ensure installation in only one orientation.
1. A valve assembly for use in a fire suppression system, the fire suppression system including a piping system including a plurality of pipes for providing fluid from a plurality of cylinders, the valve assembly operable to control the flow of fluid from the plurality of cylinders, the valve assembly comprising:
a valve positioner;
a ball valve assembly fluidly connected to one of the plurality of pipes and configured to control the supply of fluid to a corresponding one of the plurality of pipes; a position indicator; and a positioning pin; wherein
the ball valve assembly is configured to be actuated by the valve positioner between an open state and a closed state so as to provide and shut off fluid, the ball valve assembly including a valve bracket comprising a single first positioning aperture and a pair of first through-holes, wherein the first positioning aperture is disposed between the pair of first through-holes;
the position indicator configured to provide visual indication of the state of the ball valve assembly;
the valve positioner including a single second positioning aperture, and a pair of second through-holes, wherein the second positioning aperture is disposed between the pair of second through-holes; and
a pair of fasteners configured to be seated within the pair of first through-holes and the second through-holes, wherein the positioning pin is configured to be seated in the first positioning aperture and the second positioning aperture so as to prevent installation of the valve positioner to the ball valve assembly in all but one orientation and to ensure installation in only one orientation.
2. The valve assembly of claim 1 , wherein the positioning pin is configured to align the valve positioner to the ball valve assembly in a correct orientation for normal operation.
3. The valve assembly of claim 1 , wherein the valve positioner and the ball valve assembly define a selector valve assembly.
4. The valve assembly of claim 3 , further comprising a valve shaft operably connecting the valve positioner to the ball valve assembly.
5. The valve assembly of claim 4 , wherein the valve shaft is part of the ball valve assembly.
6. The valve assembly of claim 4 , wherein the valve shaft has a double D-shape in cross-section.
7. The valve assembly of claim 4 , wherein the valve shaft is configured to threadedly connect to a female aperture of the valve positioner.
8. The valve assembly of claim 1 , wherein the valve positioner and the ball valve assembly define a lockout valve assembly.
9. The valve assembly of claim 8 , wherein the ball valve assembly comprises a handle for manual actuation thereof.
10. The valve assembly of claim 9 , wherein the handle is configured to rotate only 90 degrees between the open state and the closed state of the ball valve assembly.
11. The valve assembly of claim 8 , wherein the valve positioner comprises a position shaft operably coupled to the position indicator at one end and a valve shaft of the ball valve assembly at an opposite end, wherein rotation of the valve shaft causes rotation of the position shaft and changes a state of the position indicator.
12. The valve assembly of claim 1 , wherein the valve positioner comprises a mounting bracket, wherein the mounting bracket comprises a first arm and a second arm arranged in a U-shape.
13. The valve assembly of claim 12 , wherein the first arm comprises a cutaway surface to restrict rotation of a handle to a 90 degree rotation.
14. The valve assembly of claim 1 , wherein the valve bracket comprises a first recess and a second recess, wherein a handle is rotatable between the first recess and the second recess to securely position the ball valve assembly in a first state and a second state, respectively.
15. The valve assembly of claim 1 , wherein the valve positioner is a limit switch assembly.
16. The valve assembly of claim 15 , wherein the valve positioner comprises a position shaft operably coupled to the position indicator at one end and a valve shaft of the ball valve assembly at an opposite end, wherein rotation of the valve shaft causes rotation of the position shaft and changes a state of the position indicator.
17. The valve assembly of claim 15 , wherein the ball valve assembly comprises a handle for manual actuation thereof.