New Standard from Last Update.

1. SCOPE

1.1 This Indian Standard specifies the general requirements and test methods for manually operated serviceable plastics valves intended for operation in agricultural irrigation systems. It is applicable to manually operated plastics valves of diameter nominal (DN) 8 (1/4") to diameter nominal 110 (4") including angle, globe, diaphragm and ball valves.

1.2 The valves are intended for installation in irrigation piping networks, using water at temperatures from 5 °C to 60 °C. Nominal pressures of the valves are as designated by the manufacturer.

2. REFERENCES

The standards listed in Annex A contain provisions, which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of these standards.