Supervisory Switch, Explosion-proof, Post Indicator, Butterfly Control Valves

PART #  674377
Minimum 1 Each
Call for Availability


These units are ideal for installation in hazardous locations classified as follows: Class I, Groups C, D, Division 1 and 2 Class II, Groups E, F, G, Division 1 and 2.

Intended Use. The OSYEXP is intended for use with outside screw and yoke type valves, while the PIBVEXP monitors the open position of post indicator and butterfly type valves.

Robust Construction. The OSYEXP and PIBVEXP switches are contained in a compact and rugged NEMA 1, 7 and 9 rated enclosure. The enclosure operates across a wide temperature range, from -40ºF to 160ºF.

Simplified Operation. The OSYEXP and PIBVEXP covers are secured with four captured screws to prevent screw misplacement while the cover is removed. A single tapped conduit entrance and ample wiring space provide quick and easy electrical connection.

Must be a reseller to purchase this product.


  • Designed and approved to operate in hazardous locations
  • NEMA 1, 7 and 9 enclosure rating
  • Compact, rugged housing
  • Ample wiring space
  • Captured cover screws
  • Single conduit entrance


UNSPSC Code 46171600

Spec Sheet

Spec Sheet

Shipping and Fulfillment Policy

When you order products from, the order is processed within one to two business days. Orders received during non-business days are processed on the next business day.

You have several shipping options for parcel shipping: standard ground 5 to 7 business days, 2 to 3 business days, or next business day. orders ship to addresses within Canada. orders do not currently ship to addresses outside Canada or military/government APO/FPO locations. We are also not able to ship to Post Office Box addresses. If you wish to ship to an address outside Canada or a military/government location, please contact your local Anixter sales representative to discuss your options.

In addition, offers Less-Than-A-Truckload “LTL” option for products that cannot be shipped via parcel shipping. For products that will be shipped via LTL, you will be provided with a set of Accessorials to select from to provide Anixter with additional shipping considerations, such as residential delivery, inside delivery, liftgate or limited access.

  • Residential Delivery - A residential delivery charge applies to shipments to a home or private residence, including locations where a business is operated from a home, or to any shipment in which the shipper has designated the delivery address as a residence.
  • Inside Delivery - When requested, freight carrier unloads shipments from or to areas that are not next to the trailer, such as shopping malls or office buildings. An elevator must be available to provide service to floors above or below the trailer.
  • Liftgate - Freight carrier provides liftgate service, if needed, to load and unload a shipment when loading/unloading docks are not available.
  • Limited Access Locations - A limited access location is a site where pickup or delivery is restricted or limited.

Shipping charges are calculated based on the shipping option you select, and is prepaid by you at the time of shipment.