The 401488 is a brass stamping water vent with a 1/2" inlet, a 3/4" outlet, a maximum pressure rating of 75 PSI, a maximum hydrostatic pressure rating of 200 PSI, and a maximum temperature rating of 250 degrees Fahrenheit from HOFFMAN SPECIALTY. This water vent ensures efficient and reliable venting of water. Its brass construction ensures excellent durability and resistance to corrosion. Ideal for water systems, this vent contributes to the efficient operation and maintenance of the system.