The C-126 SUP AW-430 Coupler is an essential component designed for connecting Argon Gas Hoses that feature 5/8" Male B Nuts. This coupler is equipped with a CGA-032, 5/8"-18 Right Hand Internal Thread "B" and a hex size of 3/4". Constructed from durable brass, it ensures long-lasting functionality and can accommodate pressures up to 200 psig. It is crucial not to overtighten this coupling during installation, as its effectiveness does not rely on the threads sealing the gas pressure but rather on the internal machined surface which contacts the hose fitting to create a leak-proof seal. Always ensure a snug fit and verify the integrity of the connection with a liquid leak tester after assembly. This coupler transitions from CGA-032 RH (F) to B-Size 5/8 in-18 RH (F), making it a versatile and reliable choice for gas hose applications.