Normally Open (N.O.) Operation When coil !4 is energized, (already opened) pilot valve A is closed, pressure in pressure chamber B increases, and main valve C is closed. When coil !4 is de-energized, (already closed) pilot valve A is opened, pressure in pressure chamber B decreases, and main valve C is opened. Component Parts No. Description Body Bonnet Diaphragm assembly Spring O-ring Buffer Sleeve assembly Push rod assembly Stopper O-ring A O-ring B Adapter O-ring C Solenoid coil Model Material C37, Stainless steel, Aluminum, Resin (PBT) C37, Stainless steel CAC407 Stainless steel C37, Stainless steel CAC407 Stainless steel, NBR, FKM, EPDM Stainless steel NBR, FKM, EPDM PPS Stainless steel, Resin (PPS) Resin (PPS), Stainless steel, NBR, FKM, EPDM Stainless steel NBR, FKM, EPDM NBR, FKM, EPDM Resin (PPS) NBR, FKM, EPDM Cu + Fe + Resin VXD2A VXD2B to 2D VXD2E to 2G VXD2A, 2B VXD2C, 2D VXD2E to 2G VXD2A to 2G VXD2A to 2G VXD2A to 2D VXD2A, 2B VXD2A to 2G 1 2 3 4 5 6 7 8 9 10 11 12 13 14 OUT (P2) IN (P1) OUT(P2) IN(P1) IN(P1) IN(P1) OUT(P2) IN(P1) OUT(P2) IN(P1) IN(P1) VXD2B VXD2C, 2D VXD2E, 2F, 2G VXD2A q w e r B t y u i o !1 !3 !0 !2 w q e r t w e r u q i o o !0 !1 !4 !3 !1 !2 w q e r t y u i !0 !3 !2 !4 !4 !4 A C B A C A B C A B C i o !1 !3 !2 !0 u Construction Series VXD 123 VX2 VXK VXD VXZ VXS VXE VXP VXR VXH VXF2 VX3 VXA