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2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 37 1 Seal Cap 2 Adjusting Screw 3 Top Housing 4 Regulating Diaphragm 5 Stem Valve 6 Bottom Housing 7 Seal Cap Gasket 8 Stack 9 Spring 10 Vent Connection 11 Balancing Diaphragm 12 Counter Spring 13 Bottom Plate R400Z R500Z R600Z 1 Seal Cap 2 Adjusting Screw 3 Top Housing 4 Regulating Diaphragm 5 Stem Valve 6 Bottom Housing 7 Seal Cap Gasket 8 Stack 9 Spring 10 Vent Connection 11 Diaphragm Plates 12 Balancing Diaphragm 13 Sensing Tube 14 Counter Spring 15 Bottom Plate 12 13 15 210DZ 210EZ 210GZ 210JZ 1 2 3 4 6 5 9 10 7 8 11 13 NOTE Diagrams are graphical representations only and may differ from actual product. 12 14 Zero Governor Design APPLIANCE REGULATORS 1 2 3 4 5 6 10 11 9 8 7