supply of water locking unit 3/4 inch designed.water locking unit 3/4 inch designed.,water locking unit 3/4 inch designed for pressurized flushing system as per addendum-1 of mmdts 19027 rev 01. make = spac item code. s pac 0011042 or equivalent make functionally compatible in pressured flushing system of indian railway coaches fitted with pressurized flushing system. mate rial of unit shall be of stainless steel as per aisi-304 [ warranty period: 30 months after the date of delivery ] ] , water locking unit 1/2 inch designed for pneumatic pressurized flushing system as per addendum-1 of mmdts 19027 rev 01 oasis ofepps1000 0-2 or equivalent. equivalent means it should functionally compatible in pressured flushing system of indian railway coaches fitted with pressurized flushing s ystem. material of unit shall be of stainless steel as per aisi-304 [ warranty period: 30 months after the date of delivery ] ]