This Korean Industrial Standard specifies sluice valves(hereinafter referred to as "valves") for waterworks the maximum working pressure of which is 0.74MPa{7.5kgf/cm2}. Remarks 1. The international standard correoponding to this standard is as follows : ISO 7259 : 1998 Predominantly key-operated cast iron gate valves for under ground use 2. The units and numerical values given in { } in this Standard ared and are appended for reference.