A Y M Insulated Three Part Unions
AY McDonald Insulated Three Part Unions
3 Part Insulated Union
FNPT OR MNPT INSULATED HEADPIECE – 150 PSIG
A.Y. McDonald Mfg. Co. carries Female Insulated 3 Part Unions, which are designed to prevent electrolysis or other corrosive action in 3/4” through 2” gas service lines. They are resistant to most chemical substances, including gas, water, and petroleum at normal temperatures. Create more safety to the gas meter set by choosing these ANSI B1.20.1 compliant Female Insulated 3 Part Unions!
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