Product Description
The LEGEND VALVE 313-404 is a 3/4 inch CTS (Copper Tube Size) stainless steel insert stiffener designed to reinforce flexible tubing connections at compression or barb fittings. The stiffener is inserted into the end of soft CTS tubing before a fitting is applied, preventing the tube wall from collapsing under compression force and maintaining a leak-free seal. Constructed from stainless steel for corrosion resistance, it is a standard component in potable water service and distribution assemblies. Plumbers and water service technicians install this fitting as part of routine tubing terminations in both new construction and repair work.
This insert stiffener is used wherever 3/4 inch CTS flexible tubing — including polyethylene (PE) and similar soft-wall pipe — terminates at a compression fitting or corporation stop. Typical applications include residential and light commercial water service lines, meter connections, and underground distribution piping. It is sized specifically for 3/4 inch CTS tubing and is packaged in high quantities, making it well suited for contractors managing volume installations or service van stock.
Key Features
- Stainless steel construction resists corrosion in buried and wet service environments
- Sized for 3/4 inch CTS flexible tubing, including polyethylene service pipe
- Prevents tube wall collapse at compression and barb fitting connections
- Conforms to AWWA C 800, the standard for underground service line fittings
- Compact profile at 0.8 x 2.4 x 0.7 inches fits standard CTS compression fittings
- Available in case quantities of 1,000 for high-volume contractor use
Compatibility
Designed as an OEM-style insert stiffener for use with 3/4 inch CTS flexible tubing at standard compression and barb-style water service fittings.
Installation Notes
Installed by licensed plumbers during water service line assembly. Shut off the water supply and depressurize the line before making any tubing terminations. Insert the stiffener fully into the cut end of the CTS tubing before sliding on the compression nut and ring. Follow local plumbing code and AWWA C 800 guidelines for underground service line installations.
Technical Specifications
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Material: Stainless Steel
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Tubing Size: 3/4 inch CTS
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Dimensions (Each): 0.8 x 2.4 x 0.7 inches
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Weight (Each): 0.05 pounds
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Carton Quantity: 50 each
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Case Quantity: 1,000 each
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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: 313-404
