(Superseding IS 11323 and 11335)

1. Scope

This standard specifies requirements for copper alloy, cast iron, spheroidal/nodular cast iron and cast steel, bolted bonnet, double flanged end connection gate valves from 25 to 400 mm nominal sizes of the following types used for shipboard, sea water, fresh water, fuel oil, lub oil, hydraulic oil and bilge services.

NOTES

1 Gate valves inside screw non rising stem from 25 to 400 mm are as shown in Fig. 1.

2 Gate valves outside screw, rising stem, non rising hand wheel from 40 to 400 mm are as shown in Fig. 2. The following standards 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 the standards indicated below:

2. REFERENCES

IS No. Title

210 : 2009 Grey iron castings - Specification (fifth revision)

318 : 1981 Specification for leaded tin bronze ingots and castings (second revision)

320 : 1980 Specification for high tensile brass rods and sections (Other than forging stock)

1030 : 1998 Carbon steel castings for general engineering purposes (fifth revision)

1363 Hexagon head bolts, screws and nuts of product grade ‘C’:

(Part 1) : 2002 Hexagon head bolts [size range M 5 to M 64 (fourth revision)]

(Part 3) : 2002 Hexagon nuts (size range M 5 to M 64) (fourth revision)

1865 : 1991 Iron castings with spheroidal or nodular graphite (third revision)

3444 : 1999 Corrosion resistant high alloy steel and nickel base castings for general applications - Specification (third revision)

4854 (Part 1) : 1969 Glossary of terms for valves and their parts: Part 1 Screw down stop check and gate valve and their parts

5414 : 1995 Gaskets and packing - Gland packing jute and hemp - Specification (first revision)

6392 : 1971 Steel pipe flanges

6603 : 2001 Stainless steel bars and flats - Specification (first revision)

7008 (Part 3) : 1988 ISO Metric trapezoidal screw threads: Part 3 Basic dimensions (first revision)