Brass Allen Head Plug 1/2" – OEM Replacement Fitting

Part Number: 2079
Category: Pressure Washer Parts → Fittings & Adapters → Brass Plugs & Caps
Type: Brass Allen Head Pipe Plug

The Brass Allen Head Plug 1/2" MPT (Part #2079) is a durable OEM replacement fitting designed to securely seal unused ports in pressure washer systems, pumps, plumbing assemblies, pneumatic equipment, and industrial fluid transfer applications. Featuring a 1/2-inch Male Pipe Thread (MPT) connection and an internal Allen (hex socket) drive, this plug provides a reliable, leak-resistant seal while allowing for easy installation and removal.

Key Features & Benefits

• Genuine OEM replacement fitting
• 1/2" Male Pipe Thread (MPT) connection
• Internal Allen (hex socket) drive
• Durable brass construction
• Corrosion-resistant material
• Leak-resistant threaded design
• Low-profile installation
• Easy installation and removal using a hex key
• Suitable for pressure, fluid, and air systems
• Long service life and dependable performance
• Ideal for sealing unused ports and openings

Technical Specifications

Part Number: 2079
Product Type: Allen Head Pipe Plug
Connection Size: 1/2" MPT
Thread Type: Male Pipe Thread (MPT)
Drive Type: Internal Allen / Hex Socket
Material: Brass
OEM Replacement: Yes
Application: Port Sealing, Fluid Systems, Pneumatic Equipment, and Pressure Washer Components

Common Applications

• Pressure washer systems
• Pump manifolds
• Pressure gauge ports
• Water supply systems
• Pneumatic and compressed air systems
• Hydraulic support systems
• Industrial fluid transfer equipment
• Chemical application equipment
• Agricultural machinery
• General plumbing and maintenance applications

Performance Benefits

• Provides a secure leak-resistant seal
• Protects unused threaded ports
• Helps maintain system pressure integrity
• Corrosion-resistant for long-term durability
• Compact low-profile design
• Easy serviceability with Allen wrench access
• Reliable performance in demanding environments
• Reduces risk of contamination entering open ports

Signs Replacement May Be Needed

Replace the plug if you notice:

• Damaged or stripped threads
• Rounded or worn Allen socket
• Corrosion or material deterioration
• Fluid or air leaks
• Cracks in the fitting body
• Difficulty achieving a proper seal
• Excessive wear from repeated installation

Installation Notes

1. Shut off system pressure before servicing.
2. Inspect port threads for wear or damage.
3. Apply appropriate thread sealant or PTFE thread tape.
4. Thread the plug into the port by hand.
5. Tighten using the correct size Allen wrench.
6. Avoid overtightening to prevent thread damage.
7. Pressurize the system and inspect for leaks.

Important: Verify compatibility with your system’s thread size, pressure requirements, and application before installation.

Maintenance Recommendations

• Inspect plugs regularly for leaks.
• Check thread integrity during routine maintenance.
• Replace damaged or worn plugs promptly.
• Keep threaded connections clean and free of debris.
• Verify proper sealing after servicing.
• Inspect Allen socket condition before reuse.