he B & K 164-304NL Transition Adapter is a precision-engineered fitting designed to connect CPVC piping to metal male pipe threads in potable water systems. This adapter features a 3/4-inch solvent weld socket on the CPVC side and a 3/4-inch male NPT threaded brass connection, making it ideal for joining dissimilar materials while maintaining a secure, leak-resistant seal.

Manufactured from lead-free brass and Schedule 40 CPVC, this adapter is compliant with all federal low-lead regulations and certified for potable water use. It is designed to accommodate the thermal expansion differences between plastic and metal piping systems, making it a trusted solution for residential, commercial, and industrial plumbing applications.

Key Features

• Model Number: 164-304NL
• Nominal Size: 3/4 inch
• Connection Type: Solvent weld CPVC socket x Male NPT brass thread
• Material Composition:
  • Plastic Side: CPVC (tan color), Schedule 40
  • Metal Side: Lead-free brass (C46400)
• Maximum Operating Pressure: 100 PSI
• Temperature Range: 32°F to 180°F
• Overall Length: Approx. 2 inches
• Weight: Approx. 0.33 lb
• Certifications:
  • NSF 61 & NSF 372 (Low Lead Compliance)
  • ASME B1.20.1
  • ASTM D2846
• Shelf Pack: 25 units
• Country of Origin: Taiwan (subject to change)

Applications

• Potable Water Systems: Certified for safe drinking water use
• Residential Plumbing: Ideal for connecting CPVC pipes to brass fixtures
• Commercial Installations: Suitable for mixed-material piping systems
• Industrial Systems: Reliable in environments with temperature and pressure variations
• Repair & Retrofit Projects: Perfect for replacing or upgrading existing connections

Why Choose the B & K 164-304NL Adapter?

• Stress-Reducing Design: Minimizes joint stress between metal and plastic pipes
• Certified for Safety: Meets all major standards for potable water and low lead compliance
• Durable Materials: Combines corrosion-resistant CPVC with high-strength brass
• Versatile Fit: Compatible with Schedule 40 piping and standard NPT threads