Water meters (HS: 9026, 902820). (ICS: 91.140.60).
SI 63 part 1 - Measurement of water flow in fully charged closed conduits - Meters for cold potable water and hot water: Specifications (46 page(s), in English; 6 page(s), in Hebrew)
The existing Mandatory Standard, SI 63 part 1, dealing with the specifications of meters for potable water, shall be declared voluntary.