ASTM F993-21

Standard Specification for Valve Locking Devices

ABSTRACT
This specification covers the application, design, and materials for valve locking devices. According to the method of locking, these devices are classified into three types: Type I using a wire rope assembly, Type II using a handwheel latch, and Type III using a locking shield. These devices are also grouped into three grades depending on material composition: Grade A is made of stainless steel, Grade B is made of anodized aluminum, and Grade C is made of carbon steel. Locking devices Types I and II described in this specification are designed to secure the valve in a fully opened or completely closed position. Materials to be used in the manufacture of Type I valve locking device shall consist of pipe clamp, ring link, common wire strand, tiller rope clamp, rigid eye spring hook, and sleeve. As for Type II valve locking device, the materials shall consist of modified pipe clamp, flat head rivet, single-acting quick release pin, lanyard, sleeve, lanyard clip, and lever arm. Type III devices shall consist of plate, single-acting quick release pin, lanyard, sleeve, lanyard clip, and lockbar. The locking device must be able to lock the valve in both the fully opened and completely closed positions.
SCOPE
1.1 This specification2 covers the application, design, and materials for valve locking devices.  
1.2 Locking devices Types I and II described in this specification are designed to secure the valve in a fully opened or completely closed position.  
1.3 This specification does not apply to valves equipped with locking devices from the valve manufacturer, unless this standard is invoked in the procurement ordering data for the valve or its locking device, or both.  
1.4 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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: 31-Aug-2021
• ICS: 47.020.30 - Piping systems
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.11 - Machinery and Piping Systems

Relations

• Refers: ASTM A668/A668M-20 - Standard Specification for Steel Forgings, Carbon and Alloy, for General Industrial Use
• Effective Date: 01-Mar-2020

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:F993 −21 An American National Standard
Standard Specification for
1
Valve Locking Devices
ThisstandardisissuedunderthefixeddesignationF993;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope B209 Specification for Aluminum and Aluminum-Alloy
2 Sheet and Plate (Metric) B0209_B0209M
1.1 This specification covers the application, design, and
B580Specification for Anodic Oxide Coatings on Alumi-
materials for valve locking devices.
num
1.2 Locking devices Types I and II described in this
F708Practice for Design and Installation of Rigid Pipe
specification are designed to secure the valve in a fully opened
Hangers
or completely closed position.
2.2 Other Documents:
1.3 This specification does not apply to valves equipped ASME B18.1.1Small Solid Rivets 7/16 Inch Nominal Di-
4
with locking devices from the valve manufacturer, unless this ameter and Smaller
5
AWS D1.1on Steel
standard is invoked in the procurement ordering data for the
valve or its locking device, or both.
3. Classification
1.4 The values stated in inch-pound units are to be regarded
3.1 Valve locking devices shall be classified by the follow-
asstandard.Nootherunitsofmeasurementareincludedinthis
ing types and grades in accordance with the method of locking
standard.
and material used.
1.5 This international standard was developed in accor-
3.2 Types:
dance with internationally recognized principles on standard-
3.2.1 Type I—Wire rope assembly (see Fig. 1 and Fig. 2).
ization established in the Decision on Principles for the
3.2.2 Type II—Handwheel latch (see Fig. 3 and Fig. 4).
Development of International Standards, Guides and Recom-
3.2.3 Type III—Locking shield (see Fig. 5).
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3.3 Grades:
3.3.1 Grade A—Stainless steel, Specification A240, Type
2. Referenced Documents
316.
3
3.3.2 Grade B—Anodized aluminum, Specification B209,
2.1 ASTM Standards:
Alloy 5052.
A36/A36MSpecification for Carbon Structural Steel
3.3.3 Grade C—Carbon steel, commercial quality steel (see
A240Specification for Chromium and Chromium-Nickel
Specification A36/A36M).
Stainless Steel Plate, Sheet, and Strip for PressureVessels
and for General Applications
4. Ordering Information
A492Specification for Stainless Steel Rope Wire
A668/A668MSpecification for Steel Forgings, Carbon and 4.1 Ordersformaterialunderthisspecificationshallinclude
the following:
Alloy, for General Industrial Use
4.2 ASTM Designation and year of issue.
1 4.3 Type.
This specification is under the jurisdiction ofASTM Committee F25 on Ships
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
4.4 Grade.
Machinery and Piping Systems.
Current edition approved Sept. 1, 2021. Published September 2021. Originally
4.5 Padlock Size (if necessary).
approved in 1986. Last previous edition approved in 2017 as F993–17. DOI:
10.1520/F0993-21. 4.6 Rubber Coating (if necessary).
2
This specification was developed to supersede NAVSEA Drawing S4824-
1385509, which has subsequently been cancelled and this specification has been
4
approved for use by agencies of the U.S. Department of Defense. Available from American Society of Mechanical Engineers (ASME), ASME
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM www.asme.org.
5
Standards volume information, refer to the standard’s Document Summary page on Available from American Welding Society (AWS), 8669 NW 36 St., #130,
the ASTM website. Miami, FL 33166-6672, http://www.aws.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F993−21
FIG. 1 Type I—Wire Rope Assembly
FIG. 2 Miscellaneous Type I Details
4.7 Necessary Dimensions: 4.7.2 Type II:
4.7.1 Type I: 4.7.2.1 Maximum height (fully opened).
4.7.1.1 Length of wire strand. 4.7.2.2 Minimum height (fully closed).
4.7.1.2 Diameter of pipe. 4.7.2.3 Handwheel thickness.
2

---------------------- Page: 2 ----------------------
F993−21
FIG. 3 Type II—Handwheel Latch
1
4.7.2.4 Handwheel depth. 5.1.2.4 Lanyard—Wire rope, ⁄8-in. diameter, seven strands
4.7.2.5 Diameter at location of attachment. of se
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F993 − 17 F993 − 21 An American National Standard
Standard Specification for
1
Valve Locking Devices
This standard is issued under the fixed designation F993; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
2
1.1 This specification covers the application, design, and materials for valve locking devices.
1.2 Locking devices Types I and II described in this specification are designed to secure the valve in a fully opened or completely
closed position.
1.3 This specification does not apply to valves equipped with locking devices from the valve manufacturer, unless this standard
is invoked in the procurement ordering data for the valve or its locking device, or both.
1.4 This specification is intended to supersede NASEA drawing S4824-1385509. However, cancellation of that drawing and
adoption of this specification can only be effected by the navy.
1.4 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this
standard.
1.5 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.
2. Referenced Documents
3
2.1 ASTM Standards:
A36/A36M Specification for Carbon Structural Steel
A240 Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for
General Applications
A492 Specification for Stainless Steel Rope Wire
A668/A668M Specification for Steel Forgings, Carbon and Alloy, for General Industrial Use
B209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric) B0209_B0209M
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.
Current edition approved May 1, 2017Sept. 1, 2021. Published May 2017September 2021. Originally approved in 1986. Last previous edition approved in 20112017 as
F993 – 86 (2011).F993 – 17. DOI: 10.1520/F0993-17.10.1520/F0993-21.
2
This specification is intendedwas developed to supersede NAVSEA Drawing S4824-1385509. However, cancellation of that drawing and adoption of this specification
can only be effected by the Navy.S4824-1385509, which has subsequently been cancelled and this specification has been approved for use by agencies of the U.S. Department
of Defense.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F993 − 21
B580 Specification for Anodic Oxide Coatings on Aluminum
F708 Practice for Design and Installation of Rigid Pipe Hangers
2.2 Other Documents:
4
ANSIASME B18.1.1 Small Solid Rivets 7/16 Inch Nominal Diameter and Smaller
5
American Welding Society AWS D1.1 on Steel
3. Classification
3.1 Valve locking devices shall be classified by the following types and grades in accordance with the method of locking and
material used.
3.2 Types:
3.2.1 Type I—Wire rope assembly (see Fig. 1 and Fig. 2).
3.2.2 Type II—Handwheel latch (see Fig. 3 and Fig. 4).
3.2.3 Type III—Locking shield (see Fig. 5).
3.3 Grades:
3.3.1 Grade A—Stainless steel, Specification A240, Type 316.
3.3.2 Grade B—Anodized aluminum, Specification B209, Alloy 5052.
3.3.3 Grade C—Carbon steel, commercial quality steel (see Specification A36/A36M).
4. Ordering Information
4.1 Orders for material under this specification shall include the following:
4.2 ASTM Designation and year of issue.
4.3 Type.
4.4 Grade.
FIG. 1 Type I—Wire Rope Assembly
4
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, Society of Mechanical Engineers (ASME), ASME International Headquarters,
Two Park Ave., New York, NY 10036, http://www.ansi.org.10016-599
...