Potter OSYSU-2 Series Outside Screw and Yoke Valve Supervisory Switch

Potter OSYSU-2 is an outside screw and yoke (OS&Y) valve supervisory switch (double switch) with two sets of SPDT (Form C) contacts.

The OSYSU is used to monitor the open position of an OS&Y (outside screw and yoke) type gate valve. This device is available in two models; the OSYSU-1, containing one set of SPDT (Form C) contacts, and the OSYSU-2, containing two sets of SPDT (Form C) contacts. These switches mount conveniently to most OS&Y valves ranging in size from 2” to 12” (50mm to 300mm).

They will be mounted on some valves as small as ½” (12,5mm). The cover is held in place by two tamper-resistant screws that require a special tool to remove. The tool is furnished with each device.

Features

• NEMA 4X (IP 65) and 6P (IP 67).
• -40º to 140º (-40ºC to 60ºC) operating temperature range.
• Visual Switch Indicators and Two conduit entrances.

Compatibility

The OSYSU is available in two models:

• Potter OSYSU-1: the single-switch model, with one set of SPDT (Form C) contacts.
• Potter OSYSU-2-CRH: OSYSU-2 variant listed separately on this site.
• Potter KIT-COVER: tamper switch kit for the PS, OSYSU and PCVS series.

FAQ

What valve sizes does the OSYSU-2 fit?
It mounts to most OS&Y valves from 2" to 12" (50 to 300 mm), and some as small as 1/2" (12.5 mm).

How is the cover secured?
With two tamper-resistant screws that need a special tool to remove; the tool is furnished with each device.

Documents

• OSYSU Series Outside Screw and Yoke Valve Supervisory Switch — Data Sheet (PDF)