IS 7451 Pt.6-1974

标准号：IS 7451 Pt.6-1974
发布日期：1975/3/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：Specifies the direction of motion of hand operated devices for speed regulation and reversing of reciprocating internal combustion engines, having particular regard to reciprocating internal combustion engines for marine and rail propulsion — irrespective of whether the operator's position is near the engine or remote from it.1.1 It does not apply to valves for control of liquids and gases.