3300 Series Rev C Vacuum Relief Vent End-Of-Line; Mates With ASME 150 Flange Connection; 2" Inlet Size; 316 Stainless Steel Body And Seat Ring; FEP Seal Material; 0.50 - 0.74 Oz/In2 Vacuum Pallet Configuration; Stainless Steel Weight Material; Standard Vacuum Protection Screen; Cleaned For Non-Oxygen Service Per Cashco Specification S-1542; Special For GO Model 73-13563-A2 Proximity Switch Mounted On Vacuum Relief; Only Wetted Surface of Switch To Be Cleaned To S-1542; Engineering Lab To Confirm Calibration