Philmac CTS-OD Compression Reducing Coupling | ASTM D2737

The Philmac CTS-OD Compression Reducing Coupling provides a secure and dependable way to connect two different sizes of CTS-OD polyethylene water pipe. Designed for Copper Tube Size Outside Diameter (CTS-OD) polyethylene pipe manufactured to ASTM D2737, this compression fitting allows for easy transitions between larger and smaller HDPE water lines.

Ideal for livestock watering systems, rotational grazing setups, agricultural irrigation, and farm water distribution, this reducing coupling makes it easy to change pipe sizes without requiring additional adapters or specialized installation equipment.

Featuring Philmac's reliable compression connection technology, this fitting creates a strong mechanical connection between compatible polyethylene pipes without heat fusion, welding, or specialized tools.

Whether you're reducing a main water supply line to a smaller distribution line or modifying an existing livestock watering system, Philmac CTS-OD reducing couplings provide a practical solution for connecting different pipe sizes.

Key Features

• CTS-OD Compatibility: Designed for polyethylene pipe manufactured to ASTM D2737.
• Reducing Connection: Connects two different nominal sizes of CTS-OD polyethylene pipe.
• Compression x Compression: Provides secure mechanical connections on both ends.
• Easy Installation: No heat fusion, welding, or specialized equipment required.
• Durable Construction: Manufactured from corrosion-resistant engineered materials.
• Versatile Applications: Suitable for agricultural, livestock watering, and cold-water distribution systems.
• Multiple Sizes Available: Allows transitions between different CTS-OD pipe sizes.
• Reliable Connection: Designed to grip and seal compatible polyethylene water pipe.

Common Applications

• Livestock watering systems
• Rotational and regenerative grazing water systems
• Agricultural water distribution
• Connecting different sizes of HDPE water pipe
• Reducing main water lines to smaller distribution lines
• Farm and ranch plumbing systems
• Irrigation water supply lines
• Expanding or modifying existing water systems

Available Sizes

• 1" x 3/4" – SKU 01599
• 1 1/4" x 1" – SKU 01600
• 1 1/2" x 1 1/4" – SKU 01601
• 2" x 1 1/2" – SKU 01602

Why Use a Reducing Coupling?

A reducing coupling allows two different sizes of polyethylene pipe to be connected directly without requiring multiple fittings.

For example, a livestock watering system may use a larger HDPE main supply line to carry water across a farm, while smaller lines distribute water to individual paddocks or watering locations.

A Philmac CTS-OD Compression Reducing Coupling provides a convenient way to transition between these pipe sizes while maintaining a secure connection.

Important: Reducing pipe diameter can affect available water flow and pressure loss. Proper pipe sizing is important when designing livestock watering systems, especially over long distances.

Important Compatibility Information

This reducing coupling is designed for CTS-OD polyethylene pipe (ASTM D2737).

CTS-OD pipe uses different outside diameter dimensions than IPS-OD (ASTM D3035) and IPS-ID (SIDR ASTM D2239) polyethylene pipe.

Always verify your pipe's outside diameter and sizing standard before purchasing compression fittings.

Both ends of this reducing coupling are designed for CTS-OD pipe, with each end accommodating its specified nominal pipe size.