Carrier FIE4M4F Brass Adapter Pt Port 1 in Mpt X Fpt 90 Deg 2 Pack

Product Description

The CARRIER FIE4M4F is a brass adapter fitting designed for pressure-temperature (PT) port access on hydronic and HVAC piping systems. Each fitting transitions from a 1 inch male pipe thread (MPT) to a 1 inch female pipe thread (FPT) in a 90-degree configuration and includes an integrated PT port for gauge or probe insertion without system shutdown. This kit contains two fittings. Brass construction provides corrosion resistance and durability in wet system environments. Licensed HVAC technicians and plumbers install these fittings as part of commissioning, balancing, or diagnostic setups where test-point access is required.

These adapters are used in residential and light commercial hydronic heating and cooling systems, chilled water loops, condenser water circuits, and similar piping configurations where inline pressure or temperature readings are needed. The 90-degree orientation allows the fitting to route piping around corners while maintaining PT port accessibility. The two-piece kit supports simultaneous supply and return test-point installation, a common requirement for flow and Delta-T measurement during system commissioning.

Key Features

• Integrated PT port on each fitting allows non-invasive pressure or temperature testing
• 90-degree MPT to FPT configuration for directional piping changes in tight spaces
• 1 inch MPT x 1 inch FPT thread size fits standard pipe connections
• Brass construction resists corrosion in hydronic and water-based systems
• Two-fitting kit supports simultaneous supply and return test-point access

Compatibility

Designed as an OEM-style replacement fitting for CARRIER hydronic and water-source HVAC systems requiring PT port access at 1 inch pipe connections.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician. Shut off system flow and depressurize the piping before removing or installing any fittings. Apply thread sealant or PTFE tape to all threaded connections per IPC guidelines. Verify PT port plugs are fully seated before restoring system pressure.

Technical Specifications

• Thread Size: 1 inch MPT x 1 inch FPT
• Configuration: 90 Degree Elbow with PT Port
• Material: Brass
• Quantity: 2 fittings per kit

Standard Information

• Brand: CARRIER
• Manufacturer Part Number: FIE4M4F