It is essentially the "anti-loose lock" of cold-expanded PEX, which relies on the rigid positioning of the brass nails to compensate for the creep of the plastic, ensuring that it will never loosen.

Brass Nail's Core function: mechanical locking (not sealing!)

Sealing: relying on the barbed flange of the PEX pipe to retract after expansion.
Copper pressure ring function: stuck between the expanded pipe wall and the flange of the pipe fitting to prevent the pipe mouth from coming out of the joint (resistance to pull-out force/resistance to pressure shock).

Working principle (three steps):

Expansion: Special tools expand the PEX pipe mouth.
Ring: Put the brass nail on the expanded pipe mouth.
Insert and retract: Quickly insert the pipe fitting → the pipe mouth retracts → the brass nail is locked between the pipe wall and the pipe fitting (forming a physical stopper).

Our advantages

1). Over 20 Years' Experience in production

2). Accept OEM Order

3). ISO9001 approved

4). We use All New raw material in products

5). Sufficient products with complete specifications for your choice

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