IS: 10805 - 1986; Foot-valves, reflux valves or non-return valves and bore valves to be used in suction lines of agricultural pumping systems
IS: 10805 - 1986; Foot-valves, reflux valves or non-return valves and bore valves to be used in suction lines of agricultural pumping systems
- New Delhi BIS 1991
- 7p
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