ASTM F1098-87(2019)
(Specification)Standard Specification for Envelope Dimensions for Butterfly Valves—NPS 2 to 24
Standard Specification for Envelope Dimensions for Butterfly Valves—NPS 2 to 24
ABSTRACT
This specification covers standard envelope dimensions for manual (lever and gear actuator) butterfly valves installed in shipboard piping systems. Materials covered by this specification are conventional and ANSI B16.34 class butterfly valves (from NPS 2 to NPS24) of both lug and wafer types.
SCOPE
1.1 This specification provides standard dimensions for manual (lever and gear actuator) butterfly valves installed in shipboard piping systems in NPS 2 to NPS 24, inclusive.
1.2 This specification covers conventional and ASME B16.34 class butterfly valves of both lug and wafer types.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
- Status
- Published
- Publication Date
- 30-Nov-2019
- Technical Committee
- F25 - Ships and Marine Technology
- Drafting Committee
- F25.11 - Machinery and Piping Systems
Relations
- Effective Date
- 01-Dec-2019
- Effective Date
- 01-Dec-2019
Overview
ASTM F1098-87(2019) is the standard specification for envelope dimensions of butterfly valves, specifically covering National Pipe Sizes (NPS) 2 to 24. Developed by ASTM International, this standard defines uniform envelope and face-to-face dimensions for manual butterfly valves (lever and gear actuator) installed in shipboard piping systems. It applies to both conventional and ASME B16.34 class butterfly valves, ensuring compatibility and interchangeability when used in marine environments.
Butterfly valves included under this standard are available in both lug and wafer types. ASTM F1098-87(2019) supports the optimization of piping designs, simplifies valve selection, and encourages efficient installation and maintenance throughout the lifecycle of marine piping systems.
Key Topics
Scope and Applicability
- Defines dimensional requirements for butterfly valves with lever or gear actuators
- Applies to valves in sizes from NPS 2 up to NPS 24 (approx. 50 mm to 600 mm)
- Covers both conventional and ASME B16.34 class valves, lug and wafer styles
Envelope and Face-to-Face Dimensions
- Presents standardized metal-to-metal measurements between valve body flange faces
- Ensures valves fit correctly in shipboard piping systems, supporting uniform design practices
- Values expressed in inch-pound units; SI conversions are provided for informational purposes
Actuator Envelope
- Specifies maximum permissible dimensions for levers and gear actuators
- Allows for mounting of handwheels and handles on either side of the valve
- Standardizes clockwise closure for operational consistency
Tolerances
- Provides tolerance guidelines (such as ±1/16 in. on face-to-face dimensions) for all valve sizes under the scope
Applications
ASTM F1098-87(2019) is widely used in the shipbuilding and marine industry to ensure compatibility and interoperability of butterfly valves within shipboard piping systems. Its practical applications include:
Shipbuilding and Marine Engineering
- Assures consistent fit of valves across different manufacturers and projects
- Facilitates specification and sourcing of valves during vessel design, construction, and retrofitting
Maintenance and Replacement
- Standardized dimensions enable easier replacements during ship maintenance, minimizing downtime
System Optimization
- Helps designers and engineers create reliable, space-efficient marine piping layouts
- Reduces the risk of dimensional discrepancies that can lead to installation issues
Regulatory and Quality Compliance
- Supports adherence to international shipbuilding standards
- Simplifies documentation and inspection processes
This standard is essential for stakeholders responsible for designing, installing, maintaining, or procuring butterfly valves in marine projects.
Related Standards
To ensure complete compliance and system compatibility, organizations often reference ASTM F1098-87(2019) alongside:
- ASME B16.34 - Valves - Flanged, Threaded, and Welding End: Specifies requirements for pressure-temperature ratings, dimensions, materials, and testing for various valves.
- ASTM F25 - Committee on Ships and Marine Technology: Oversees a range of marine and shipboard hardware standards.
- ISO and International Standards on shipboard piping and valve selection.
By adhering to ASTM F1098-87(2019) and related standards, marine engineers and shipbuilders promote safety, reliability, and efficiency in their piping systems. This standard plays a vital role in achieving interoperability for butterfly valves across shipboard applications, thus streamlining procurement, installation, and ongoing operations.
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Frequently Asked Questions
ASTM F1098-87(2019) is a technical specification published by ASTM International. Its full title is "Standard Specification for Envelope Dimensions for Butterfly Valves—NPS 2 to 24". This standard covers: ABSTRACT This specification covers standard envelope dimensions for manual (lever and gear actuator) butterfly valves installed in shipboard piping systems. Materials covered by this specification are conventional and ANSI B16.34 class butterfly valves (from NPS 2 to NPS24) of both lug and wafer types. SCOPE 1.1 This specification provides standard dimensions for manual (lever and gear actuator) butterfly valves installed in shipboard piping systems in NPS 2 to NPS 24, inclusive. 1.2 This specification covers conventional and ASME B16.34 class butterfly valves of both lug and wafer types. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ABSTRACT This specification covers standard envelope dimensions for manual (lever and gear actuator) butterfly valves installed in shipboard piping systems. Materials covered by this specification are conventional and ANSI B16.34 class butterfly valves (from NPS 2 to NPS24) of both lug and wafer types. SCOPE 1.1 This specification provides standard dimensions for manual (lever and gear actuator) butterfly valves installed in shipboard piping systems in NPS 2 to NPS 24, inclusive. 1.2 This specification covers conventional and ASME B16.34 class butterfly valves of both lug and wafer types. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM F1098-87(2019) is classified under the following ICS (International Classification for Standards) categories: 23.060.10 - Globe valves. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM F1098-87(2019) has the following relationships with other standards: It is inter standard links to ASTM F1098-87(2015), ASTM F2363/F2363M-17(2023). Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM F1098-87(2019) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:F1098 −87 (Reapproved 2019) An American National Standard
Standard Specification for
Envelope Dimensions for Butterfly Valves—NPS 2 to 24
This standard is issued under the fixed designation F1098; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Dimensions
1.1 This specification provides standard dimensions for
3.1 Face-to-Face Dimensions:
manual (lever and gear actuator) butterfly valves installed in
3.1.1 Valve body face-to-face dimensions are provided in
shipboard piping systems in NPS 2 to NPS 24, inclusive.
Table 1.
1.2 This specification covers conventional and ASME
3.1.2 The face-to-face dimensions are the metal-to-metal
B16.34 class butterfly valves of both lug and wafer types.
dimensions between the valve body flange faces that require
1.3 The values stated in inch-pound units are to be regarded
separate gaskets or the compressed or installed condition for
as standard. The values given in parentheses are mathematical
valves using liners that extend from the body contact faces and
conversions to SI units that are provided for information only
act as flange gaskets.
and are not considered standard.
3.2 Actuator Dimensions:
1.4 This international standard was developed in accor-
3.2.1 The maximum permissible dimensions for lever- and
dance with internationally recognized principles on standard-
gear-type actuators are provided in Fig. 1.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 3.2.2 The handwheel and handle may be on either side of
mendations issued by the World Trade Organization Technical the valve.
Barriers to Trade (TBT) Committee.
3.2.3 All handwheels and handles rotate clockwise to close
the valve.
2. Referenced Documents
2.1 ASME Standard:
4. Tolerances
B16.34 Valves — Flanged, Threaded, and Welding End
4.1 Face-to-FaceDimensions—Aplusorminustoleranceof
1 ⁄16 in. (1.6 mm) for all sizes shall be allowed (see Table 1).
This specification is under the jurisdiction of ASTM Committee F25 on Ships
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
5. Keywords
Current edition approved Dec. 1, 2019. Published January 2020. Originally
approved in 1987. Last previous edition approved in 2015 as F1098 – 87 (2015).
5.1 envelope dimensions; gear actuator butterfly valves;
DOI: 10.1520/F1098-87R19.
lever butterfly valves; manual butterfly valves
Available from American Society of Mechanical Engineers (ASME), ASME
International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
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