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Safety Valve Standards

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Safety Valve Standards
CountryStandard No.Description
Germany A. D. Merkblatt A2 Pressure Vessel Equipment safety devices against excess pressure - safety valves
TRD 421 Technical Equipment for Steam Boilers Safeguards against excessive pressure - safety valves for boilers of groups I, III & IV
TRD 721 Technical Equipment for Steam Boilers Safeguards against excessive pressure- safety valves for steam boilers group II
United Kingdom, UK BS 6759 Part 1 specification for safety valves for steam and hot water
Part 2 specification for safety valves for compressed air and inert gas
Part 3 specification for safety valves for process fluids
France AFNOR NFE-E
29-411 to 416
Safety and relief valves
NFE-E-29-421 Safety and relief valves
Korea KS B 6216 Spring loaded safety valves for steam boilers and pressure vessels
Japan JIS B 8210 Steam boilers and pressure vessels - spring loaded safety valves
Australia SAA AS1271 Safety valves, other valves, liquid level gauges and other fittings for boilers and unfired pressure vessels
USA ASME I Boiler applications
ASME III Nuclear applications
ASME VIII Unfired Pressure Vessel Applications
ANSI/ASME PTC 25.3 Safety and Relief Valves - performance test codes
API RP 520 Sizing selection and installation of pressure relieving devices in refineries, Part 1 Design, Part 2 Installation
API RP 521 Guide for pressure relieving and depressurizing systems
API STD 526 Flanged steel pressure relief valves
API STD 527 Seat tightness of pressure relief valves
Europe EN ISO 4126 Safety devices for protection against excessive pressure
International ISO 4126 Safety valves - general requirements
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Related Topics

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Sizing and dimensions of control valves & equipment in steam and condensate systems.

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International valve standards for piping systems.

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ASME - International Boiler and Pressure Vessel Code

The International Boiler and Pressure Vessel Code safety rules governing design, fabrication, and inspection of boilers and pressure vessels, and nuclear power plant components during construction.

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Steam boilers output can be expressed in Boiler Horsepower, MBTU or in Pounds of Steam delivered per hour.

Factors of Safety - FOS

Factors of Safety - FOS - are important in engineering designs.

Heating Systems - Safety Valves Size vs. Boiler Power

Safety valves with boilers ranging 275 to 1500 kW.

High Pressure Steam Systems - Safety Valve Capacities

Sizing safety valves according boiler output power in high pressure systems (kW and Btu/hr)

Low Pressure Steam Safety Valves - Capacities

Sizing safety valves after boiler output power in low pressure systems (kW and Btu/hr).

Pilot Operated Safety Valves in Liquid Systems

Calculate pilot operated relief valves in liquid systems.

Relief Valves - Length of Vent Pipes

Calculate length of safety valves vent pipes.

Safety Signals - Recommended Colors

American National Standards Institutes schedule for safety colors marking physical hazards.

Safety Valves in Gas and Vapor Systems

Calculating relief valves in gas and vapor systems.

Spring Operated Safety Valves in Liquid Systems

Calculate spring operated relief valves in liquid systems.

Valve Selection Guide

Applications guide for selecting valves.

Valves - Specific Services

In case of a specific service - the choose of a valve may be simplified by following an established practice.

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