Overview
The Appleton PLG-150 1-1/2″ conduit plug is a close-up recessed head design manufactured from malleable iron with a mechanically galvanized finish. This explosionproof-rated fitting is engineered to seal conduit openings in electrical distribution, machinery control, and hazardous-location installations. The recessed head design allows flush mounting and reduces snag points in tight cabinet spaces.
Key Features
- Recessed head design for flush mounting and compact installation
- Malleable iron construction with zinc electroplated finish for corrosion resistance
- Tapered NPT threads for tight, rigid joints and ground continuity
- Smooth integral bushing in each hub to protect conductor insulation
- Explosionproof and dust-ignitionproof rated
- Supplied in box of 4 units
Technical Specifications
- Trade Size: 1-1/2 inch
- Material: Malleable Iron
- Finish: Mechanically Galvanized (Zinc Electroplated)
- Head Style: Recessed
- Connection Type: Tapered NPT Threads
- UL Listing: UL 886
- CSA Approval: CSA C22.2
- Hazardous Location Rating: Class I Div 1 and 2 Group B C
- Quantity per Package: 4
Typical Applications
- Sealing unused conduit entries in electrical enclosures and control panels
- Hazardous location installations (Class I Division 1 and 2)
- Industrial machinery wiring and junction box protection
- Chemical processing and flammable liquid/vapor environments
- Drilling rigs, gas compression stations, and petrochemical facilities
- Refineries and mining operations requiring explosionproof certification
Compatibility & Replacements
Compatible With
- Threaded Rigid Metal Conduit (RMC) 1-1/2″ size
- Intermediate Metal Conduit (IMC) 1-1/2″ size
- Appleton Unilet explosionproof enclosures and bodies
- Standard electrical distribution and control panel installations
Replaces / Drop-In Replacement For
- Appleton PLG-150 (all manufacturing runs)
- Other 1-1/2″ malleable iron recessed plugs meeting UL 886 specifications
Works With
- Threaded conduit systems (rigid metal and intermediate metal)
- Appleton Unilet close-up and outlet body systems
- Industrial electrical enclosure hardware and conduit fittings
- Hazardous location electrical installations and certification standards








