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Brass compression coupling for 3/8 inch PEX-AL-PEX tubing

Legend Valve

Legend Valve 830-142C 3/8 in PEX-AL-PEX Compression Coupling equipment

SKU CH-KXDB-GCS87

Connects 3/8-inch PEX-AL-PEX tubing to manifold systems using compression fittings

  • 3/8 in compression coupling joins PEX-AL-PEX tubing to manifold
  • Legend Valve 830-142C model built for industrial plumbing systems
  • Pair of connectors simplifies installation on composite tubing runs
  • New condition ensures clean threads and reliable sealing performance
  • California Prop 65 notice flags chemical content for installer awareness

3/8 in PEX-AL-PEX Coupling

This compression coupling connects 3/8 in PEX-AL-PEX composite tubing to a manifold in plumbing installations. It is designed for trade professionals and competent DIY installers working on hydronic heating or potable water distribution systems. The component is supplied new and carries the Legend Valve brand identifier 830-142C.

Push-fit compression install

Installation uses a compression method that does not require soldering, crimping tools or open flame. The tubing is inserted into the fitting and the nut is tightened to create the seal. Common issues include insufficient insertion depth, debris on the tube surface or over-tightening the nut which can deform the composite layers and cause leaks.

Hydronic and potable loops

This coupling suits installers joining 3/8 in PEX-AL-PEX tubing to manifold ports in radiant floor heating, snow-melt or domestic water loops. It is not intended for rigid copper, CPVC or standard PEX tubing without the aluminium core, nor for gas distribution lines. Buyers needing larger diameters, different connection types or gas-approved fittings should select alternative components.

How it compares

Measured against everything we stock in Drain Cleaners & Plumbing Tools, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 92% of the 1,087 comparable items (median $57.99).

Specifications

Product
Brand nameLEGEND VALVE

Questions about this item

How can I confirm the Legend Valve 830-142C coupling is sealing correctly after installation?

Pressurise the system and inspect each compression joint for leaks; a dry, secure connection on the 3/8 inch PEX-AL-PEX tubing indicates the 830-142C is working as intended.

What components are included with the Legend Valve 830-142C and what must I supply separately?

The package supplies the 830-142C composite connector pair for 3/8 inch M-8330/8300 tubing; you must provide the tubing, manifold and any required compression tools.

Which Legend Valve coupling version matches my 3/8 inch PEX-AL-PEX tubing?

Choose the 830-142C model; it is specified for 3/8 inch M-8330/8300 composite tubing to manifold connections.

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