B38K Llc 102-003 Brass Boiler Drain 1/2 Inch Mpt

Product Description

The B38K LLC 102-003 is a brass male pipe thread boiler drain valve designed for hydronic heating systems and plumbing drain applications. It features a 1/2-inch external male pipe thread inlet, a 1/2-inch internal solder connection, and a 3/4-inch hose thread outlet for attaching a standard garden or drain hose. The cast iron handle provides a firm grip for manual operation during draining or system service. Pipe threads conform to ANSI B1.20.1 and hose threads conform to ANSI B1.20.7. Licensed plumbers and HVAC service technicians are the primary installers for this fitting.

This boiler drain is suited for residential and light commercial plumbing and hydronic heating installations where a low-point drain or service valve is required. It is commonly installed at the base of boilers, water heaters, and distribution piping to allow controlled system draining without full disassembly. The dual-connection design accommodates either a soldered copper pipe connection or a threaded pipe installation depending on the job requirement.

Key Features

• 1/2-inch external male pipe thread inlet compliant with ANSI B1.20.1
• 1/2-inch internal solder connection for copper pipe installations
• 3/4-inch hose thread outlet compliant with ANSI B1.20.7 for standard drain hose attachment
• Brass body construction for corrosion resistance in wet plumbing environments
• Cast iron handle for reliable manual operation during system drain-down

Compatibility

Designed as an OEM-style replacement or new-installation boiler drain for residential and light commercial plumbing and hydronic heating systems with 1/2-inch pipe or copper connections.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician in accordance with local plumbing codes and IPC guidelines. Shut off the water supply and depressurize the system before removing or installing any drain valve. For solder connections, use approved flux and lead-free solder per applicable codes. Do not overtighten threaded connections; use thread sealant tape on pipe threads as appropriate.