2 inch x 1-1/2 inch Proflex Reducing Coupling Connects Cast Iron to PVC, Steel,Extra Heavy Cast Iron

2" x 1-1/2" Proflex Reducing Coupling – Transition Fitting for Cast Iron, PVC, and Steel Piping

The 2" x 1-1/2" Proflex Reducing Coupling is designed for transitioning between different nominal pipe sizes and materials. This mechanical joint coupling is manufactured to provide a secure, code-compliant connection between 2-inch and 1-1/2-inch piping, including cast iron, PVC, and steel. It is commonly used in DWV (Drain, Waste, and Vent) systems and non-pressurized drainage applications.

Constructed with a corrosion-resistant stainless steel shield and clamp assembly over an elastomeric neoprene or EPDM gasket body, this coupling delivers uniform sealing pressure around the pipe circumference. It accommodates differences in outside diameter (O.D.) between dissimilar materials while maintaining a watertight seal under normal system conditions.

Application Advantages

• ✅ Transition Compatibility – Allows direct connection between cast iron and plastic (PVC/ABS) or steel piping of different sizes.
• ✅ No-Hub Design – Uses torque-balanced clamps to secure joints without solvent welding or threading.
• ✅ Vibration Absorption – Flexible gasket body absorbs pipe movement and minor misalignments.
• ✅ Time-Saving Installation – Installs with a torque wrench to recommended specifications; no special tools or adhesives required.
• ✅ UPC/IAPMO Listed – Complies with plumbing and mechanical codes for use in sanitary drainage and vent systems.

Installation Requirements

This coupling should be installed by a qualified technician using a calibrated torque wrench to achieve uniform clamping force—typically 60 in-lbs per manufacturer instructions. Pipe ends must be clean and square-cut. The coupling should not be used for pressurized applications unless specifically rated and approved for such use.

Technical Specifications

• Body Material: Flexible elastomeric sleeve (neoprene or EPDM)
• Shield: 300-series stainless steel with interlocking corrugation
• Clamps: 300-series stainless steel worm gear bands
• Size: Reducing – 2" x 1-1/2" nominal pipe size
• Use: DWV systems; not intended for pressurized fluid transport

Typical Use Cases

Frequently utilized in retrofit work, remodels, and repairs where cast iron piping is being replaced or extended with PVC. Also applicable in transitions between galvanized steel and plastic drainage lines, particularly in slab, wall cavity, or crawl space installations where rigid alignment is not feasible.

Code Compliance and Performance

Proflex couplings meet applicable standards such as ASTM C1460 and are certified by IAPMO for use in sanitary drainage and vent systems. Their flexibility and dimensional adaptability make them a reliable solution for field conditions where pipe material and sizing vary.

The 2" x 1-1/2" Proflex Reducing Coupling is engineered to deliver consistent sealing performance across mixed-material transitions, with fast installation and long-term reliability in gravity flow piping systems.