B & K 521-402hn Pipe Cap, 3/8 In. Fip, Malleable Iron

This B & K black pipe cap is a malleable iron fitting designed to seal 3/8-inch FIP (Female Iron Pipe) connections in gas, air, and LP piping systems. The cap closes the end of pipe runs and is factory pressure-tested to ensure consistent quality and reliable performance in these applications.

Constructed from durable malleable iron with a pressure rating of 150 psi at 300°F, this fitting is suitable for above-ground gas, air, and LP applications. It features IPS threads for compatibility with standard pipe fittings and components.

Features and Benefits

• Malleable Iron Construction: Provides durability for gas, air, and LP piping applications.
• Factory Pressure Tested: Each fitting is pressure tested at the factory to verify quality before shipment.
• 3/8-Inch FIP Connection: Standard female iron pipe thread fits with matching male fittings and pipe.
• 150 PSI Rated: Designed for 150 psi at 300°F operating temperature.

Specifications

• Brand: B & K
• Model: 521-402HN
• Nominal Size: 3/8 inch
• Connection Type: FIP (Female Iron Pipe)
• Material: Malleable Iron
• Pressure Rating: 150 psi
• Operating Temperature: 300°F at 150 psi rating
• Application: Gas, air, and LP piping only

Safety

• Not for Potable Water: This fitting is not designed for use with drinking water systems and should only be used for gas, air, and LP applications as intended.