4" G Thread British BSPP Female to NPT Male Adapter – Lead-Free Brass Plumbing Fitting

The 4" G Thread British BSPP Female to NPT Male Adapter is designed to connect 4-inch BSPP (British Standard Pipe Parallel) female threads to 4-inch NPT (National Pipe Taper) male threads. Made from lead-free brass, it’s a reliable solution for plumbing and hydraulic systems where durability and compatibility matter.

This adapter combines a parallel BSPP thread for consistent sealing and a tapered NPT thread for a tight, leak-free connection.

Key Features

• BSPP to NPT Compatibility
  Converts 4" BSPP female threads to 4" NPT male for seamless integration between British BSPP and imperial plumbing systems.
• Lead-Free Brass Construction
  Safe for potable water applications and highly resistant to corrosion and wear.
• Optional Washer Included
  While not required for BSPP threads, an optional washer is included for additional sealing if needed.
• Easy Installation
  Screw-in design for quick and secure installation by professionals or DIY users.
• Precision Threading
  Manufactured to exact standards to ensure a snug and leak-free fit.

Product Specifications

• Size: 4" British BSPP (G Thread) Female to 4" NPT Male
• Material: Lead-Free Brass
• Maximum Working Pressure: Up to 230 PSI
• Temperature Range: -65°F to +250°F (-53°C to +121°C)
• Installation Method: Screw-In
• Finish: Brass
• Item Weight: 4 lb
• Dimensions: 5 x 5 x 3 inches
• MPN: CSSL56162580

Package Includes

• 1 x 4" BSPP to NPT Adapter
• 1 x Optional sealing washer

Why Choose This Adapter

This 4" G Thread British BSPP to NPT Adapter is ideal for both residential and industrial plumbing setups requiring a strong, corrosion-resistant, and accurate fitting. Whether you're adapting systems across international standards or working with hydraulic components, it ensures performance and peace of mind.