CSST DN15 x 15mm compression coupler for connecting corrugated stainless steel tubing in heating and plumbing systems. Brass body with compression fitting design ensures secure, leak-free joints. Compatible with standard 15mm CSST tubing and compression fittings. Ideal for boiler installations, underfloor heating, and radiator connections where flexibility and reliability are essential. Easy to install without special tools — simply tighten the compression nut hand-tight then quarter-turn with a wrench.
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