Outside Screw And Yoke Valve Supervisory Double Switch, 10 Amp At 125/250 Volt AC, 2 Amp At 30 Volt DC Resistive, 10 mA Minimum At 24 Volt DC, Die Cast Cover, Die Cast Base, Red Powder Coated Cover, Black Powder Coated Base

MFR PART #  1010202  | OSYSU-2
PART #  235234
Minimum 1 Each
Call for Availability


The OSYSU is used to monitor the open position of an OS and 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 and Y valves ranging in size from 2" - 12" (50 mm - 300mm). They will mount on some valves as small as 1/2 Inch (12.5 mm). 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.


  • NEMA 4X (IP 65) and 6P (IP 67)
  • Enclosure is 4X. For additional corrosion protection of mounting hardware, use model OSYSU-2 CRH
  • -40 to 60 deg C operating temperature range
  • Visual switch indicators
  • Two conduit entrances
  • Adjustable length trip rod
  • Acodates up to 12AWG wire
  • Three position switch detects tampering and valve closure
  • Knurled mounting bracket prevents slipping
  • Fine adjustment feature for fast, easy installation
  • One or two SPDT contact models (-1,-2)
  • All parts have corrosion resistaninishes
  • Tamper Resistant Screws, Optional Cover Tamper

Tech Info

callus Listed, FM Approved, CE Certified, RoHS Compliant


UNSPSC Code 46171600

Spec Sheet

Spec Sheet

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