3 PLUG COUNTER SUNK BRASS

🔧 What it is

• A 3-inch brass plug fitting
• “Countersunk” means the head is recessed/flush or socketed for a wrench tool
• Typically threaded as 3" NPT male plug used in plumbing systems

⚙️ What it does

• Seals large pipe openings (usually drain, sewer, or water systems)
• Used for:
  • Cleanouts
  • Pressure testing piping systems
  • Closing unused main lines or tees
• Designed to be removable for maintenance access

🧱 Key characteristics

• Size: 3 inch nominal pipe size
• Material: brass (or sometimes bronze)
• Thread type: NPT male threads
• Head style: countersunk / recessed drive (for wrench or cleanout tool)
• Pressure rating: often DWV (low pressure) or up to ~1000+ psi depending on type

🏗️ Common uses

• Sewer and drain cleanouts
• Plumbing stack termination points
• Mechanical room pipe caps
• Industrial piping systems requiring service access

🧠 Simple explanation

It’s basically a big 3-inch brass “screw-in cap” with a recessed head so you can tighten or remove it with a special tool or wrench.