3" Grooved Inline valveManufacturer's Product Number: DTS Inline Valve Dimensions: 12 x 8 x 18 in OD is 3 1 2" This 3 Air to Close Grooved Inline Valve is used for controlling water flow to Deflector and other style spray heads. Aluminum construction and thick diaphragms ensure a lightweight and durable valve for your water distribution needs. This valve requires a 1 4" air hose fitting to operate (not included). Looking for a replacement diaphragm? Check out our 3 Inline