The Eastman 1/2" OD gas connector is designed to connect most major brands of water heaters, dryers, and moderate usage appliances to a shut-off valve. The connector is certified for use with most water heaters and dryers with gas ratings up to 71,100 BTUs. DuraCoat Epoxy Coating provides extra protection from corrosion, chemical stains from common household products, and UV rays and is approved for indoor/outdoor use.