Carson 12203001 Extension Valve Box Body

Product Description

The CARSON 12203001 is an extension valve box body designed for underground irrigation and utility valve installations. Constructed from structural foam high-density polyethylene (HDPE) with UV inhibitors, this box body resists degradation from sunlight, chemicals, and moisture over extended service life. It is intended to extend the depth of an existing valve box enclosure, giving technicians additional clearance around valves, wiring connections, or plumbing fittings. Irrigation contractors and landscape plumbing professionals are the primary installers of this component.

This extension body is suited for residential and light commercial irrigation systems where underground valve access is required. It pairs with compatible Carson valve box lids and bases to create a complete underground enclosure. The HDPE construction holds up in wet, chemically treated, or soil-contact environments without cracking or warping under typical ground-load and seasonal temperature cycling conditions.

Key Features

• Structural foam HDPE construction resists impact, chemicals, and water intrusion
• UV inhibitors reduce surface degradation from prolonged sun exposure during and after installation
• Extension design increases depth of existing valve box assemblies
• Suitable for a range of weather and soil conditions without special coatings
• Lightweight form factor simplifies handling and placement during installation

Compatibility

Designed as an OEM-style extension component for underground irrigation and utility valve box assemblies. Refer to the Carson 1220 series product line for compatible bases and lids.

Installation Notes

Installation is typically performed by licensed irrigation contractors or plumbing professionals. Shut off the irrigation system water supply and relieve line pressure before beginning work around any valve connections. Ensure the trench or pit is sized to allow proper seating of the box assembly without lateral soil pressure distorting the body. Local plumbing and irrigation codes should be consulted for minimum burial depth requirements in the service area.