A.y. Mcdonald 4430-002 Flexible Gas Riser 1 in Cts X Mpt

Product Description

The A.Y. MCDONALD 4430-002 is a flexible gas riser designed to connect underground plastic gas distribution piping to above-ground gas appliances and meters. It transitions from 1-inch CTS (Copper Tube Size) to a 1-inch MPT (Male Pipe Thread) fitting, making it compatible with SDR12.5 plastic gas pipe with a 0.090-inch wall thickness. This riser is used in natural gas service installations where a flexible, durable transition from buried polyethylene pipe to a threaded service connection is required. Licensed gas piping contractors install this component as part of residential and light commercial gas service risers.

This riser is suited for residential and light commercial gas service applications where SDR12.5 polyethylene gas distribution pipe terminates at grade and transitions to a meter set or above-ground appliance connection. The 1-inch CTS x 1-inch MPT configuration is a common size for medium-volume gas service feeds. It is designed for use with 0.090-inch wall SDR12.5 gas plastic pipe and provides the flexible riser section needed to accommodate minor ground movement and thermal expansion at the service point.

Key Features

• Transitions 1-inch CTS polyethylene gas pipe to 1-inch MPT threaded connection
• Compatible with SDR12.5 plastic gas pipe at 0.090-inch wall thickness
• Flexible construction accommodates minor ground movement and thermal cycling
• Designed for natural gas service riser applications at meter sets and service entries
• 1-inch MPT outlet fits standard gas meter and appliance threaded fittings

Compatibility

Designed for use with SDR12.5 plastic gas distribution pipe with a 0.090-inch wall thickness in 1-inch CTS sizing. Intended as a gas service riser for residential and light commercial natural gas installations.

Installation Notes

Installation must be performed by a licensed gas piping contractor in accordance with IFGC requirements and applicable local codes. Shut off gas service and verify the line is depressurized before making any connections. Do not overtighten the MPT threaded connection; use an approved pipe thread sealant rated for gas service. Inspect all joints for leaks using an approved leak detection solution after restoring gas pressure.

Technical Specifications

• Inlet Size: 1 inch CTS
• Outlet Size: 1 inch MPT
• Compatible Pipe Standard: SDR12.5
• Pipe Wall Thickness: 0.090 inches
• Pipe Material: Plastic (Polyethylene) Gas Distribution Pipe
• Connection Type: CTS x MPT

Standard Information

• Brand: A.Y. MCDONALD
• Manufacturer Part Number: 4430-002