Supervisory Switch

  • BT-OSY-1 Quick View
    • BT-OSY-1 Quick View
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    • BT-OSY-1

    • The BT OSY-1 is a supervisory switch designed to monitor whether an OS&Y gate valve is open or closed. Mount the switch on the valve so that it does not block valve movement. The switch must trigger within two full turns of the handwheel, or before the stem moves one-fifth of its total travel distance. The unit features one SPDT…
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  • BT-PIV-1 Quick View
    • BT-PIV-1 Quick View
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    • BT-PIV-1

    • The BT-PIV-1 supervisory switch is designed to monitor the open position of wall and yard Post Indicator Valves (PIVs) / Butterfly Valves used in fire protection systems. The switch must be installed ensuring it does not interfere with the normal operation of the valve. It must be adjusted to operate within two complete turns of the valve operating mechanism, or…
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  • BT-PSP-1 Quick View
    • BT-PSP-1 Quick View
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    • BT-PSP-1

    • The BT-PSP-1 Supervisory Switch is a special-purpose monitoring device designed for applications where conventional valve supervisory switches cannot be used, such as non-rising stem gate valves. During normal operation, the switch remains in the set position. When the valve handwheel is turned, the internal plug is withdrawn from the switch body, causing the normally open contacts to close and send…
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