Potter OSYSU-2-CRH


Outside Screw & Yoke Supervisory Switch (Double Switch). Corrosion resistant hardware of 316 stainless steel

Availability: Estimated 6 - 8 Business Days

  • Factory New
Brand: Potter FireAlarm.com Part #: 80949 Categories: , Manufacturer Part #: OSYSU-2-CRH Tags: ,


The OSYSU-CRH is used to monitor the open position of an OS&Y (outside screw and yoke) type gate valve in corrosive environments. The OSYSU-CRH provides additional corrosion protection on top of the NEMA 4X enclosure with corrosion resistant mounting hardware. These switches mount conveniently to most OS&Y valves ranging in size from 2″ to 12″ (50mm to 300mm). They will mount 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.


Weight 1.60 lbs
Dimensions 6.19 × 3.05 × 9.36 in



  • NEMA 4X* (IP 65) and 6P (IP 67) *Enclosure is 4X. For additional corrosion protection of mounting hardware, use model OSYSU-2 CRH
  • -40º to 140º (-40ºC to 60ºC) operating temperature range
  • Visual switch indicators
  • Two conduit entrances
  • Adjustable length trip rod
  • Accomodates up to 12AWG wire
  • Three position switch detects tampering and valve closure
  • Knurled mounting bracket prevents slipping
  • Fine adjustment feature for fast, easy installation
  • RoHS compliant
  • One or two SPDT contact models (-1,-2)


OSYSU Series; Outside Screw and Yoke Valve Supervisory Switch
Potter – Data Sheet


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