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Gray PVC-coated threaded conduit plug with copper finish, 1/2 inch male threads, compact cylindrical shape

Killark

Killark CUP-1 Hazardous Location Conduit Plug 1/2 in Threaded Copper PVC Coated Gray

SKU CH-1FPJ-N8WX5

A hazardous-location conduit plug with 1/2 in male NPT threads, copper-coloured PVC coating and Class I, II, III ratings for sealing unused hub openings

  • TypeCable Management & Conduit
  • Seals hazardous conduit openings with 1/2 in MNPT threads
  • Copper-free aluminum body resists corrosion in harsh environments
  • PVC-coated gray finish adds chemical and abrasion protection
  • Certified for Class I Division 1 Groups A-D explosive atmospheres
  • Lightweight 0.04 lb design simplifies installation in tight spaces

Hazardous Location Conduit Plug

The Killark CUP-1 seals a 1/2 inch threaded conduit opening in classified areas. It carries Class I Division 1 and 2 ratings for Groups A through D and Zone ratings for Groups IIC, IIB and IIA. The copper body with PVC coating resists corrosion in harsh industrial environments.

Simple Threaded Installation

The plug uses male NPT threads on both ends and fits a compatible 1/2 inch trade size hub or taped hole. Overall length is 5/8 inch, so engagement depth is short and alignment is straightforward. The light weight of 0.04 lb means no special support is needed during fitting.

Verify Classification and Thread Match

Confirm the installation area matches the listed hazardous location classes and groups before ordering. Ensure the existing conduit entry is a 1/2 inch female NPT thread to accept the male ends. The plain aluminum finish under the coating may affect compatibility with certain chemical exposures.

Highlights

  • Seals hazardous conduit openings with 1/2 in MNPT threads
  • Copper-free aluminum body resists corrosion in harsh environments
  • PVC-coated gray finish adds chemical and abrasion protection
  • Certified for Class I Division 1 Groups A-D explosive atmospheres
  • Lightweight 0.04 lb design simplifies installation in tight spaces

Specifications

BrandHUBBELL KILLARK
TypeCable Management & Conduit

Questions about this item

How can I verify the CUP-1 plug is correctly sealing the hazardous-location conduit after installation?

Confirm the 1/2 in MNPT threads are fully engaged in the hub or tapped hole and that the gray PVC coating shows no gaps; the plug carries Class I Division 1/2 Groups A-D, Class II Division 1/2 Groups E-G and Class III ratings, so a proper thread fit is the visual check.

What comes with the CUP-1 plug and what must I supply separately?

The box contains the aluminum blank plug with plain finish and gray PVC coating; you must provide the 1/2 in threaded hub or tapped hole and any thread sealant required by your installation code.

Which version of the CUP-1 should I select for a 1/2 in hazardous-location conduit run?

Choose the CUP-1 model listed — it is the 1/2 in trade size, male-to-male threaded, copper-coloured PVC-coated gray plug rated for Class I, II and III hazardous locations.

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