it must be replaced to prevent safety hazards

For high-altitude applications

While often documented in manufacturer bulk packs

0mm for natural gas flow rates

JB U1-6D 3/8" SAE x 1/2" MPT Adapter it must be replaced toThe JB Industries U1 6D is a high performance half union flare adapter designed for professional HVACR applications. Engineered for the rigors of field use, this adapter features a 3 8" SAE flare connection by a 1 2" MPT (Male Pipe Thread), facilitating a secure transition between refrigeration lines and threaded components. Forged from premium C360 and C370 brass in the USA, the U1 6D provides superior tensile strength and corrosion resistance