Versa Valve VSG-3521-316-XXL4-D024: Solenoid valve, V: pneumatic service, S: spring return left hand inlet, G: solenoid pilot actuated right end inlet, 3: three way function type of valve, 5: 1/2" valve port size, 2: side Ported InPilot, 1: normally closed two position spool detail, 316: 316 stainless steel valve, blank: standard spring, XXL4: (D14, PC, XX) solenoid vent/ water proof nut, potted coil, explostion proof, 24VDC
Features: 
"¢ 24VDC
"¢ Spring return
"¢ Solenoid pilot
"¢ Three way
"¢ 1/2" valve port size
"¢ Side ported inPilot
"¢ Normally closed two position spool detail
"¢ 316 Stainless steel valve
"¢ XXL4 (D14, PC, XX) solenoid vent/ water proof nut
"¢ Potted coil
"¢ Explosion proof