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IS 13114:1991 is the Indian Standard (BIS) for forged brass gate, globe and check valves for water works purposes. This standard specifies the requirements for materials, dimensions, construction, testing, and marking for forged brass gate, globe, and check valves of nominal sizes 15 to 100 mm. These valves are intended for use in water works and domestic plumbing systems with pressure designations PN 1.0 and PN 1.6.
forged brass gate, globe and check valves for water works purposes
Overview
Status
Current
Usage level
Frequently Used
Domain
Water Resources — Sanitary Appliances and Water Fittings
BS 5154:1991BSI (British Standards Institution), United Kingdom
HighWithdrawn
Specification for copper alloy globe, globe stop and check, check and gate valves
Covers the same valve types (gate, globe, check) in similar copper alloys for general purpose and plumbing use.
BS EN 12288:2010CEN (European Committee for Standardization), Europe
MediumCurrent
Industrial valves - Copper alloy gate valves
Direct successor to the gate valve portion of BS 5154, but with a broader industrial scope and updated material specifications.
MSS SP-80MSS (Manufacturers Standardization Society), USA
MediumCurrent
Bronze Gate, Globe, Angle, and Check Valves
Covers the same valve types for similar pressure classes, but primarily specifies bronze materials and US customary end connections (NPT).
Key Differences
≠IS 13114 mandates forged brass for the valve body, whereas standards like BS 5154 and MSS SP-80 permit a wider range of cast and forged copper alloys, including various bronzes and gunmetals.
≠IS 13114 uses the metric Nominal Pressure (PN) system (e.g., PN 1.0, PN 1.6), while the US equivalent MSS SP-80 uses a 'Class' system (e.g., Class 125, 150) based on pressure-temperature ratings in psi.
≠The Indian standard specifies screwed ends conforming to IS 554 (BSP threads). International standards like MSS SP-80 offer a wider variety of end connections, including NPT threads, solder joints, and flanges.
≠IS 13114 specifies gate valves to be of the inside screw, non-rising stem type. BS 5154 and MSS SP-80 provide for both non-rising stem and outside screw and yoke (OS&Y) rising stem designs.
Key Similarities
≈All standards cover the same fundamental valve designs (gate, globe, and check) intended for flow control in water systems.
≈The core testing requirements are conceptually identical, mandating hydrostatic pressure tests for the valve body (shell test) and seat (seat leakage test) to ensure pressure integrity.
≈The basic construction principle using a body, bonnet, stem, and obturator (wedge, disc, or plug) made from corrosion-resistant copper alloys is common across all standards.
≈All standards include marking requirements on the valve body that specify the manufacturer, pressure rating, and nominal size for identification.
Parameter Comparison
Parameter
IS Value
International
Source
Body Material Requirement
Forged Brass (IS 6912 or IS 8737)
Bronze (e.g., ASTM B62, B584)
MSS SP-80
Body Test Pressure (Shell)
1.5 times Nominal Pressure (e.g., 1.5 MPa for PN 1.0)
1.5 times the 100°F (38°C) pressure rating
MSS SP-80
Seat Test Pressure
Equal to Nominal Pressure (e.g., 1.0 MPa for PN 1.0)
1.1 times the 100°F (38°C) pressure rating
MSS SP-80
Pressure Rating System
PN (Nominal Pressure in MPa)
Class (Pressure rating in PSI at specific temperatures)
MSS SP-80
Standard End Connection
Screwed BSP (IS 554)
Threaded NPT (ASME B1.20.1)
MSS SP-80
Gate Valve Stem Design
Inside screw, non-rising stem
Permits inside screw (non-rising) and outside screw & yoke (rising)