Product Description
The LEGEND VALVE 313-405 is a 1-inch CTS (Copper Tube Size) stainless steel insert stiffener designed to reinforce flexible tubing connections in potable water and plumbing systems. This internal support sleeve is inserted into the end of soft or flexible CTS tubing before a compression or grip-style fitting is applied. It prevents the tubing wall from collapsing under clamping force, maintaining a round, full-bore opening for a leak-free seat. Plumbers and water service technicians install this component as standard practice when working with flexible polyethylene or similar CTS-compatible tubing. Conforms to AWWA C 800, the standard governing underground service line materials.
The 313-405 insert stiffener is used in residential and light commercial water service applications where CTS flexible tubing connects to service valves, meters, or fittings. It is particularly common in underground water service line installations where polyethylene tubing transitions to brass or bronze fittings. The small profile and stainless steel construction make it well-suited for tight trenching or meter-pit environments. Available in case quantities of 1000 and carton quantities of 50, making it practical for contractors stocking service trucks or supply rooms.
Key Features
- Stainless steel construction resists corrosion in wet or buried service conditions
- Sized for 1-inch CTS tubing, maintaining full-bore diameter under compression fittings
- Conforms to AWWA C 800 for underground water service line components
- Lightweight at 0.06 pounds each — minimal added load in any installation
- Available in high-count case quantities for contractor and wholesale stocking
Compatibility
Designed for use with 1-inch CTS flexible tubing in compression or grip-style fitting assemblies conforming to AWWA C 800 service line standards.
Installation Notes
A licensed plumber or water service technician should install this stiffener in accordance with local plumbing codes and AWWA C 800 guidelines. Shut off the water supply and relieve line pressure before cutting or joining tubing. Insert the stiffener fully into the cut end of the CTS tubing before seating the compression fitting — do not overtighten fittings without the stiffener in place, as tubing collapse can result in a failed seal. Inspect the tubing end for clean, square cuts before assembly to ensure proper stiffener seating.
Technical Specifications
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Tubing Size: 1 inch CTS
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Material: Stainless Steel
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Weight Each: 0.06 pounds
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Each Dimension: 1 x 2.5 x 0.9 inches
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Carton Quantity: 50 each
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Case Quantity: 1000 each
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Carton Dimension: 8.2 x 13.8 x 2 inches
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Case Dimension: 14.4 x 16.7 x 13.1 inches
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Certification: Conforms to AWWA C 800
Standard Information
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Brand: LEGEND VALVE
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Manufacturer Part Number: 313-405
