INTERNAL SAFETY ORIFICE

Metal pipe nipples; metal mechanical valves and regulators, namely, metal mechanical valves and metal regulating valves, both not being parts of machines; metal mechanical valves and regulators for metering and controlling the flow and pressure of gases, fluids, and parts thereof

Gas, electric and water meters and parts thereof; temperature compensator for a gas meter for control of fluid and gas pressure and flow; metering valves, namely, electronic metering valves for control of fluid pressure and flow, and parts thereof