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IS 14846:2018 is the Indian Standard (BIS) for cast iron gate, globe and check valves for industrial purposes - specification. This standard specifies the requirements for flanged cast iron gate, globe, and check valves used for industrial and general-purpose pipelines. It covers material specifications, pressure-temperature ratings (PN 1.0 & PN 1.6), dimensions, design, testing, and marking for valves from DN 40 to DN 1000. The standard ensures performance and interchangeability for valves in water, steam, oil, and other fluid applications.
Covers requirements for cast iron gate, globe, and check valves for industrial applications up to PN 16.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
Practical Notes
! Always verify the pressure (PN) rating and temperature suitability for the intended service; mismatches are a common cause of failure.
! Ensure correct gasket selection and bolt torqueing during installation to prevent flange leakage, a frequent issue on-site.
! For steam service, confirm the valve's pressure rating at the operating temperature using Table 2, as the permissible pressure decreases significantly at higher temperatures.
BS EN 1171:2015BSI (British Standards Institution) / CEN (European Committee for Standardization), UK/Europe
HighCurrent
Industrial valves — Cast iron gate valves
Covers design, materials, testing, and marking for cast iron gate valves, aligning with the gate valve portion of IS 14846.
BS EN 12334:2015BSI (British Standards Institution) / CEN (European Committee for Standardization), UK/Europe
HighCurrent
Industrial valves — Cast iron check valves
Specifies requirements for cast iron check valves, directly overlapping with the check valve section of IS 14846.
MSS SP-70-2022MSS (Manufacturers Standardization Society of the Valve and Fittings Industry), USA
HighCurrent
Gray Iron Gate Valves, Flanged and Threaded Ends
Defines requirements for gray iron gate valves, analogous to the gate valve specifications in the Indian Standard.
ASME B16.10-2017ASME (American Society of Mechanical Engineers), USA
MediumCurrent
Face-to-Face and End-to-End Dimensions of Valves
Provides standard valve dimensions, a critical aspect that IS 14846 also specifies for interchangeability.
Key Differences
≠IS 14846 consolidates specifications for gate, globe, and check valves into a single document. In contrast, European (EN) and American (MSS) standards typically have separate, dedicated standards for each valve type (e.g., EN 1171 for gate, EN 12334 for check).
≠Material grades are specified according to national standards. IS 14846 requires cast iron grades like FG 200/FG 260 per IS 210, while EN standards specify EN-GJL-250 (per EN 1561) and US standards use ASTM A126 Class B.
≠IS 14846 specifies a maximum allowable working temperature of 220°C for cast iron. Many European standards, referencing EN 1092-2 for flanges, limit the use of equivalent grey cast iron (EN-GJL-250) to 200°C for PN16 pressure class.
≠Marking requirements are country-specific. IS 14846 mandates the BIS Standard Mark (ISI Mark), whereas valves for the European market require a CE mark, and US standards have their own distinct marking protocols defined by MSS or ASME.
Key Similarities
≈The use of PN (Pression Nominale) pressure designations (PN 1.0 and PN 1.6) is consistent with the European system (PN10 and PN16), facilitating easier comparison and selection in international projects.
≈IS 14846 specifies face-to-face dimensions by referencing IS 14845, which is harmonized with international standards like ISO 5752 and BS EN 558. This ensures that valves are physically interchangeable with their international counterparts for a given size and pressure class.
≈The hydrostatic test pressure ratios are largely harmonized. Both IS 14846 and EN 12266-1 (the European testing standard) specify a shell test at 1.5 times the nominal pressure and a seat leakage test at 1.1 times the nominal pressure.
≈The fundamental design concepts and functions for gate valves (e.g., solid wedge, rising/non-rising stem), globe valves (e.g., T-pattern body), and check valves (e.g., swing type) are universally understood and are consistent across IS 14846 and its international equivalents.
Parameter Comparison
Parameter
IS Value
International
Source
Body Material (Standard Grade)
Grey Cast Iron FG 200 (as per IS 210)
Grey Cast Iron EN-GJL-250 (as per EN 1561)
BS EN 1171:2015
Pressure Class
PN 1.6 (1.6 MPa)
PN 16 (16 bar)
BS EN 1171:2015
Shell Hydrostatic Test Pressure (for PN 1.6 / PN 16)
2.4 MPa
24 bar (equivalent to 2.4 MPa)
EN 12266-1:2012
Seat Hydrostatic Test Pressure (for PN 1.6 / PN 16)
What is the standard body material for these valves?+
Grey cast iron conforming to at least Grade FG 200 as per IS 210 (Clause 4.1).
What hydrostatic tests are required?+
A shell test at 1.5 times the max permissible working pressure and a seat test at 1.1 times the max permissible working pressure (Clause 9).
What do the PN10 and PN16 ratings mean?+
They represent the nominal pressure rating in bar at ambient temperature. For example, a PN10 valve is rated for 10 bar (1.0 MPa) cold working pressure.
Are the flange dimensions specified in this standard?+
Yes, flange dimensions and drilling details are specified in Table 3, which references IS 1538.