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Valves Standards & Dimensions




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Prashaant Steel & Alloys is well-known on the international market and is eager to include high-quality Valves Products. Prashaant Steel & Alloys is a producer, supplier, stockiest, and exporter of Valves, and exports the material to global customers at reasonable prices. Valves are made in line with established manufacturing practises, allowing for the most effective use of raw materials. 

The valves are used in many industrial, commercial and residential applications. Because of this wide range of applications, there are several key regulatory organizations that provide standards to ensure proper functionality, compatibility, and safety for users. American Petroleum Institute (API), American Society of Mechanical Engineers (ASME), American National Standards Institute (ANSI), ASTM International (FKA American Society for Testing Materials), and Manufacturers Standardization Society (MSS). above were incorporated and headquartered in the United States. Today they have an international reach with their standards used worldwide.

Engineers who design a valve for worldwide use or who use a valve in a product or system design should read the standard documents available from the relevant national and international standards organization. 

  • The International Organization for Standardization (ISO) is a major international standardization body with several important valve standards. 
  • The European Committee for Standardization (CEN) creates or approves most of the European standards or Euro standards (EN) and technical specifications for the member countries of the European Union. 
  • Some valve standards from national standards bodies include ANSI valve standards (USA), BSI valve standards (UK), CSA valve standards (Canada), DIN valve standards (Germany), EEMUA valve standards (UK) and JSA valve standards (Japan) National standards bodies approve in primarily product standards for use in their future countries by other standardization organizations. In addition, they represent national accreditation. 

Engineers designing a valve for a particular industrial application or using a valve in a product or system design for a particular industrial application should review the standard documents available from the relevant industrial society organizations. The standards include: 

  • API valve standards 
  • ASHRAE valve standards
  • ASME BPVC Valves 
  • ASSE Valves 
  • AWWA Valves 
  • ISA Valves 
  • NFPA Valves 
  • SAE Valves

American Petroleum Institute (API):

The American Petroleum Institute (API) represents the oil and natural gas industry and creates more than 900 standards that serve as the basis for quality programs that adhere to regulations for production materials and lubricants, and certification programs for storage tanks, pressure vessels and pipes. Inspectors. API publishes reports that include best practices, investigation reports, and specifications for piping, valves, and procedures for the environment.

 There are more than 20 API standards covering valve manufacture, use, and safety. Specific standards include: 

  • API SPEC 6D – Specification for Pipeline Valves. API Specification 6D is an adoption of ISO 14313: 1999, Petroleum and Natural Gas Industries– Pipeline Transportation Systems-Pipeline Valves. This International Standard specifies requirements and gives recommendations for the design, manufacturing, testing, and documentation of ball, check, gate, and plug valves for application in pipeline systems.
  • API STD 598 – Valve Inspection and Testing. The standard covers inspection, supplementary examination and pressure test requirements for both resilient-seated and metal-to-metal seated gate, globe, plug, ball, check and butterfly valves. Pertains to inspection by the purchaser and to any supplementary examinations the purchaser may require at the valve manufacturer’s plant.
  • API STD 527 – Seat Tightness of Pressure Relief Valves R(2002). Describes methods of determining the seat tightness of metal and soft-seated pressure relief valves, including those of conventional, bellows and pilot-operated designs.
  • API STD 602 – Steel Gate, Globe, and Check Valves for Sizes NPS 4 (DN 100) and Smaller for the Petroleum and Natural Gas Industries-Ninth Edition
  • API STD 607 – Fire Test for Quarter-turn Valves and Valves Equipped with Nonmetallic Seats – Sixth Edition
  • API STD 609 – Butterfly Valves: Double-flanged, Lug- and Wafer-type-Seventh Edition This standard covers design, materials, face-to-face dimensions, pressure-temperature ratings, and examination, inspection and test requirements for gray iron, ductile iron, bronze, steel, nickel-based alloy, or special alloy butterfly valves that provide tight shutoff in the closed position. The standard covers the following Category A and B butterfly valves

American Society of Mechanical Engineers (ASME)

The American Society of Mechanical Engineers (ASME) is a professional membership organization focused on engineering, educational, and research issues in the engineering and technology community. In addition to holding technical conferences and development courses, ASME sets internationally recognized manufacturing and industrial standards. The pressure vessels and pipelines subsection includes the design, manufacture and operation of valves and other components as well as pressure vessels. 

ASME publishes hundreds of standards, and many of them apply to a particular instrument in a particular application. Valve standards are listed below.

  • ASME F1020- Standard Specification for Line-Blind Valves for Marine Applications
  • ASME B16.33 – EN-Manually Operated Metallic Gas Valves for Use in Gas Piping Systems up to 125 PSI (Sizes NPS 1/2 Through NPS 2)
  • ASME B16.34 INTERPRETATIONS – EN-Interpretations to B16.34-1996 Valves – Flanged Threaded and Welding End-Includes Interpretation No. 2
  • ASME B16.10 INTERPRETATIONS – EN-Interpretations to B16.10-1992 Face-to-Face and End-to-End Dimensions of Valves-Includes Interpretation No. 1


The ASME BPVC Code sets out the safety rules for the design, manufacture, inspection, testing and operation of boilers and pressure vessels and components of nuclear power plants during construction. The purpose of these rules is to create a margin for service degradation. The ASME BPVC code or standards are updated every two years to reflect advances in design and material based on evidence of experience. The ASME BPV Certificate Scopes (BPV Seal Holder Scopes) list the authorized activities for each type of ASME certificate or seal. ASME seals or approval certificates are required for safety or pressure relief valves in boilers, pressure vessels and pressure equipment, such as:

  • ASME High Pressure Vessel Safety Valve Accreditation Set
  • ASME Pressure Vessel Safety Valve Accreditation Set
  • ASME V Stamp – Power Boiler Safety Valves
  • ASME HV Stamp – Heating Boilers Safety Valves
  • ASME UV Stamp Div 1 – Pressure Vessels Safety Relief Valves
  • ASME UV Stamp Div 2 – Pressure Vessels Safety Relief Valves
  • ASME UV3 Stamp – Safety Valves for High Pressure Vessels
  • ASME TV Stamp – Transport Tanks Safety Valves
  • ASME NV Stamp – Nuclear Safety Valves and Nuclear Safety Relief Valves

ASTM International

ASTM International, originally known as the American Society for Testing of Materials (ASTM), is the world’s largest voluntary standards organization. In 67 volumes in 16 different areas, the organization has included standards in test procedures to determine chemical composition and performance indicators. 

ASTM develops valve standards for valves made of a specific material and for a specific application. Some examples of its standards are:

  • ASTM A961/A691M – Standard Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures.
  • ASTM B61 – Standard Specification for Steam or Valve Bronze Castings.
  • ASTM F1030 – Standard Practice for Selection of Valve Operators.
  • ASTM F1802 – Standard Test Method for Performance Testing of Excess Flow Valves.
  • ASTM F1793 – Standard Specification for Automatic Shut-Off Valves (Also Known as Excess Flow Valves, EFV) for Air or Nitrogen Service
  • ASTM F1794 – Standard Specification for hand-operated, globe-style valves for gas (except oxygen gas) and Hydraulic Systems

Fluid Control Institute (FCI)

The Fluid Control Institute (FCI) provides standards and other materials to assist buyers and users in designing fluid control and treatment equipment, such as:


International Society of Automation (ISA):

The International Society for Automation (ISA) publishes standards for automation professionals that are exclusively available through IHS. IHS standards, specifications and recommendations provide guidance on how to optimize processes and improve safety, efficiency and profitability in the industry.

  • ISA 75.02.01 – Control Valve Capacity Test Procedures
  • ISA 75.05.01 – Control Valve Terminology-Replaces 75.05-1983
  • ISA 75.07 – Laboratory Measurement of Aerodynamic Noise Generated by Control Valves
  • ISA 75.08.01 – Face-to-Face Dimensions for Integral Flanged Globe-Style Control Valve Bodies (Classes 125 150 250 300 and 600)
  • ISA 75.08.02 – Face-to-Face Dimensions for Flangeless Control Valves (Classes 150 300 and 600)
  • ISA 75.08.03 – Face-to-Face Dimensions for Socket Weld-End and Screwed-End Globe-Style Control Valves (Classes 150 300 600 900 1500 and 2500)
  • ISA 75.08.04 – Face-To-Face Dimensions for Buttweld-End Globe-Style Control Valves (Class 4500)
  • ISA 75.08.05 – Face-to-Face Dimensions for Buttweld-End Globe-Style Control Valves (Class 150 300 600 900 1500 and 2500)
  • ISA 75.08.06 – Face-to-Face Dimensions for Flanged Globe-Style Control Valve Bodies (Classes 900 1500 and 2500)-Formerly ISA 75.16
  • ISA 75.08.07 – Face-to-Face Dimensions for Separable Flanged Globe-Style Control Valves (Classes 150 300 and 600)
  • ISA 75.08.08 – Face-to-Centerline Dimensions for Flanged Globe-Style Angle Control Valve Bodies (ANSI Classes 150 300 and 600)
  • ISA 75.08.09 – Face-to-Face Dimensions for Sliding Stem Flangeless Control Valves (Classes 150 300 and 600)
  • ISA 75.10.01 – General Requirements for Clamp or Pinch Valves
  • ISA 75.10.02- Installed Face-to-Face Dimensions for Dual Pinch Flange Clamp or Pinch Valves (Classes 125 and 150)
  • ISA 75.11.01 – Inherent Flow Characteristic and Rangeability of Control Valves
  • ISA 75.13.01 – Method of Evaluating the Performance of Positioners with Analog Input Signals and Pneumatic Output-Second Printing

International Standards Organization (ISO):

The International Standards Organization (ISO) is composed of representatives from national standardization bodies. You are the greatest developer of technical and economic standards that cover a wide range of elements. ISO standards are numbered in the format “ISO nnnnn: yyyy: Title”, “Nnnnn” is the standard number, “yyyy” is the year of publication and “Title” is the description of the topic.

  • ISO 4411: Second Edition 2008 – Hydraulic fluid power, Valves; Determination of pressure
  • ISO 5208: 2008 – Industrial valves, pressure testing of valves
  • ISO 5209: 1977 – General purpose industrial valves; Marking First Edition
  • ISO 6264: 1998 – Hydraulic fluid power — Pressure-relief valves – Mounting surfaces

More information on ISO standards can be found at the International Standards Organization website.

Manufacturers Standardization Society (MSS) of the Valve and Fitting Industry

The Manufacturers Standardization Society (MSS) of the valve and fittings industry is a non-profit technical association. Their goal is to develop and improve industrial, national and international codes and standards for valves, valve actuators, pipe fittings, and valve modifications. MSS standards are used around the world and in many industries. Examples of their standards are below.

  • MSS SP-25 – Standard marking system for valves, fittings, flanges and unions
  • MSS SP-67 – Butterfly valves
  • MSS SP-82 – Valves pressure testing methods.

National Board of Boiler and Pressure Vessel Inspector (NBBI):

The National Board of Boiler and Pressure Vessel Inspectors (NBBI) created the National Board Inspection Code (NBIC) in 1946, which serves as one of the primary tools for compliance assurance. This code has been adopted by most states and cities in the United States, all Canadian provinces and someUS regulatory agencies, including the US Department of Transportation. It is the only code recognized worldwide for the in-service inspection of repairs and alterations of boilers and pressure vessels (BPV).

  • VRStamp – The National Board offers theCertificate of Authorization and symbol stamp for the repair pressure relief valves. The requirements the supplier must meet to be authorized are described in NBIC standards for Repairs and Alterations – NBBI NB-23 PART 3, Section 1.

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