Bd Manufacturing N76-02 Pressure Temp Test Plug 1/4 Inch Mpt

Product Description

The BD MANUFACTURING N76-02 is a 1/4-inch male threaded (MPT) brass test plug fitting designed for pressure and temperature monitoring points in hydronic and geothermal flow center assemblies. Constructed from brass, this fitting accepts standard test probes and gauges at service ports on flow center manifolds. HVAC technicians and geothermal loop installers use it to gain quick access to system pressure and temperature readings without breaking the loop. Its 1/4-inch MPT end connection threads directly into compatible test port bosses on flow center housings.

This fitting is commonly installed in residential and light commercial geothermal heat pump systems, specifically at the flow center where the ground loop meets the unit supply and return lines. It is also applicable in closed-loop hydronic heating systems where monitoring points are required for commissioning, diagnostics, or routine service checks. The brass construction holds up to the temperatures and pressures typical of these closed-loop systems.

Key Features

• 1/4-inch MPT male threaded end connection for direct port installation
• Brass construction provides corrosion resistance in closed-loop hydronic and geothermal applications
• Serves as a dedicated pressure and temperature test access point on flow center assemblies
• Compatible with standard Schrader-style or push-in test probe instruments

Compatibility

Designed as an OEM-style replacement or service fitting for flow center pressure and temperature test port bosses with 1/4-inch MPT connections, typical of residential geothermal and hydronic flow center assemblies.

Installation Notes

Installation should be performed by a licensed HVAC or geothermal technician. Isolate and depressurize the loop circuit before removing or installing any test port fittings. Apply an appropriate thread sealant to the male threads and verify there are no leaks after pressurizing the system. Follow applicable mechanical codes and the flow center manufacturer guidelines for test port servicing.

Technical Specifications

• End Connection: Male Threaded (MPT)
• Nominal Pipe Size: 1/4 inch
• Material: Brass

Standard Information

• Brand: BD MANUFACTURING
• Manufacturer Part Number: N76-02