Product Description
The LEGEND VALVE 313-406 is a stainless steel insert stiffener designed for use with 1-1/4 inch CTS (Copper Tube Size) tubing that also fits 1 inch IPS (Iron Pipe Size) connections. Part of the T-4500 CTS series, this stiffener is inserted into the end of flexible plastic or composite tubing to maintain tube roundness and wall integrity when a compression or grip-style fitting is tightened down. Without proper stiffening, soft tubing can deform under compression load, causing leaks or fitting pullout. Plumbers and water service technicians rely on insert stiffeners to ensure consistent, leak-free connections on underground and above-ground service lines.
This stiffener is suited for residential and light commercial water service applications where CTS polyethylene, PEX, or similar flexible tubing is joined using compression-style service saddles, curb stops, or corporation stops. It is a standard component in water meter and service line installations where tubing transitions occur at the meter set or at the curb box. The T-4500 series is a widely recognized product line in municipal and utility water service work.
Key Features
- Stainless steel construction resists corrosion in wet, buried, and direct-contact soil environments
- Sized for 1-1/4 inch CTS tubing with compatibility noted for 1 inch IPS fittings
- Maintains tube roundness under compression load to prevent deformation and leaks
- Conforms to AWWA C800, the standard for underground service line fittings
- Lightweight at 0.07 pounds per piece, reducing handling fatigue on high-volume installs
- Available in case quantities of 500 units, suitable for contractor and utility stocking
Compatibility
Designed for use with 1-1/4 inch CTS flexible tubing and fits 1 inch IPS compression-style fittings within the LEGEND VALVE T-4500 CTS product series. Intended as an OEM-style component for water service line compression fitting assemblies conforming to AWWA C800.
Installation Notes
Insert stiffeners are installed by plumbers and water service technicians as part of a compression fitting assembly on flexible service tubing. Shut off water supply and depressurize the line before making any connections. Ensure the stiffener is fully seated to the tube stop before tightening the compression nut. Follow applicable local plumbing codes and AWWA C800 guidelines for underground service line work.
Technical Specifications
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Material: Stainless Steel
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Tube Size: 1-1/4 inches CTS
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Fitting Compatibility: 1 inch IPS
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Weight Each: 0.07 pounds
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Each Dimension: 1.2 x 2.4 x 1.2 inches
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Carton Quantity: 25 each
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Case Quantity: 500 each
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Standards: Conforms to AWWA C800
Standard Information
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Brand: LEGEND VALVE
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Manufacturer Part Number: 313-406
