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AY McDonald Mfg. Co.

By-Pass Meter Bars

By-Pass Systems that Make Sense Full flow even in by-pass mode. Read More

Brass Body Ball Valves

Full Port Ball Valves AY McDonald Mfg. Co. full port ball valves are constructed of heavy duty brass. Read More

Lubricated Gas Meter Valves

Tamperproof | 175 PSIG | Flat Head | Lockwing These valves are designed for use with natural, manufactured or LP gas only. Read More

Meter Nuts and Swivels

Meter nuts are used to connect straight and/or offset swivel gas fittings to the gas meter. Read More

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