The B & K 164-313NL Transition Adapter is a precision-engineered fitting designed to connect CPVC piping to brass components in potable water systems. This adapter features a 1/2-inch female socket connection on the CPVC side and a 1/2-inch female NPT threaded connection on the brass side, making it ideal for joining dissimilar materials while maintaining a secure, leak-resistant seal.

Manufactured from C46400 low-lead brass and Schedule 40 CPVC, this adapter compensates for the expansion and contraction differences between plastic and metal piping systems. It is certified for low lead compliance and meets rigorous standards for potable water use, making it a trusted solution for residential, commercial, and industrial plumbing applications.

Key Features

• Model Number: 164-313NL
• Connection Type: Socket (CPVC) x FNPT (Brass)
• Nominal Pipe Size: 1/2 inch
• Material Composition:
  • Metal Side: Brass (C46400), Female NPT
  • Plastic Side: CPVC, Female Socket
• Schedule Compatibility: Schedule 40
• Maximum Operating Pressure: 100 PSI
• Temperature Range: 32°F to 180°F
• Overall Length: 1-9/16 inches
• Metal Side Outside Diameter: 27.5 mm
• Plastic Side Outside Diameter: 27.8 mm
• Hex Size: 25 mm
• Threaded Insert Material: Brass
• Non-Threaded Insert Material: CPVC
• Color: Tan
• Certifications:
  • NSF 61 & NSF 372 (Low Lead Compliance)
  • ASME B1.20.1
  • ASTM D2846
• 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 164-313NL Adapter?

• Stress-Reducing Design: Minimizes stress at the joint 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