nonflammable

MB23A & MB24

Each features spring-loaded spray disk to prevent particle clogging and thumb-screw volume control

Mechanical features help provide long life in high-tension

Faucet Part Type: Flow Control Valves

Watts 4 1/8 in x 5 3/8 in Boiler Feed Valve, FNPT x Sweat Union - S1156F PIATTO nonflammableFor use in hydronic heating systems, this boiler feed valve helps to maintain water pressure at all times by filling boilers and piping systems with water. The cast iron valve also helps to permit rapid system fill and sustained air purge flow. In the event of system leaks, it helps to provide make up water to the system.