MSS SP-116-2025 饮用水系统用管线阀门和管件

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MSS SPxxx-202x

Standard Practice developed and approved by

the Manufacturers Standardization Society of

the Valve and Fittings Industry, Inc.

The Technical Voice of the Industry ®

441 North Lee Street

Alexandria, Virginia 22314

www.msshq.org

Manufacturers

Standardization Society

OF THE VALVE AND FITTINGS INDUSTRY

PROVIDING INDUSTRY STANDARDS SINCE 1924

MSS SP-116

2025 Edition

Service-Line Valves and

Fittings for Drinking

Water Systems

MSS SP-116-2025

This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 112, Water Works

Valves & Fittings, and the MSS Coordinating Committee. The content of this Standard Practice is the resulting efforts of

knowledgeable and experienced industry volunteers to provide an effective, clear, and non-exclusive standard that will

benefit the industry as a whole. This MSS Standard Practice describes minimal requirements and is intended as a basis

for common practice by the manufacturer, the user, and the industry at large. It is the responsibility of the user of this

Standard Practice to establish appropriate safety and health practices and determine the applicability of regulatory

requirements prior to use. The existence of an MSS Standard Practice does not in itself preclude the manufacture, sale,

or use of products not conforming to the Standard Practice. Mandatory conformance to this Standard Practice is

established only by reference in other documents such as a code, specification, sales contract, or public law, as

applicable. MSS has no power, nor does it undertake, to enforce or certify compliance with this document. Any

certification or other statement of compliance with the requirements of this Standard Practice shall not be attributable

to MSS and is solely the responsibility of the certifier or maker of the statement.

“Unless indicated otherwise within this MSS Standard Practice, other standards documents referenced to herein are

identified by the date of issue that was applicable to this Standard Practice at the date of approval of this MSS

Standard Practice (see Annex A). This Standard Practice shall remain silent on the validity of those other standards

of prior or subsequent dates of issue even though applicable provisions may not have changed.”

By publication of this Standard Practice, no position is taken with respect to the validity of any potential claim(s) or

of any patent rights in connection therewith. MSS shall not be held responsible for identifying any patent rights.

Users are expressly advised that determination of patent rights and the risk of infringement of such rights are

entirely their responsibility.

For all MSS Standard Practices, the term “shall” means “must” and “shall not” means “must not”.

In this Standard Practice, all text, notes, annexes, tables, figures, and references are construed to be “normative”

and essential to understand the standard’s message. All appendices and footnotes, or any other information

denoted as “supplemental”, that may be included within this Standard Practice, DO NOT involve mandatory or

normative requirements.

The U.S. customary units and SI (metric) units included within this Standard Practice are regarded separately as the

standard; each should be used independently of the other and may not be technically equivalent. Combining or converting

values between the two systems of measurement may result in non-conformance with this Standard Practice.

Non-toleranced dimensions in this Standard Practice are nominal unless otherwise specified.

Substantive changes in this 2025 edition are “flagged” by parallel bars as shown on the margins of this paragraph. The

specific detail of the change may be determined by comparing the material flagged with that in the previous edition.

Excerpts of this Standard Practice may be quoted with written permission. Credit lines should read ‘Extracted from MSS SP-

116-2025 with permission of the publisher, Manufacturers Standardization Society of the Valve and Fittings Industry’.

Reproduction and/or electronic transmission or dissemination is prohibited under copyright convention unless written

Originally Approved: April 1996

Originally Published: May 1996

Current Edition Approved: May 2025

Current Edition Published: August 2025

MSS is a registered trademark of the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.

MSS SP-116-2025

Foreword

In the mid 1990’s, the Manufacturers Standardization Society was requested to develop a Standard Practice for

line valves and assigned this as a project to the MSS Committee 112, Water Works Valves and Fittings. Many of

the significant components of service-lines for drinking water systems have not been specifically covered by

standards. The MSS Committee 112 decided to fill this need in the water works industry by creating this

Standard Practice, which has a broader scope than previous drinking water service line standards. However,

the tubing, pipe, water main, water meter, and machines associated with drinking water service-lines are not

covered by this Standard Practice.

The 2003 version was substantially revised from the original 1996 version.

The 2011 version was substantially updated and revised from the 2003 version; including an update of Sections

2, 4, 9, multiple Tables, and Annex A.

The 2014 version included minor editing of the text, formatting adjustments, the addition of several new

definitions in Section 2, approved revisions to Sections 1, 5, 6, and 9, errata corrections in Table 10 through 13,

the movement of the optional field testing instructions in Section 6 from the body of the Standard Practice to the

Appendix, and updating of references in Annex A.

The 2019 version was substantially revised for accuracy with other industry standards and nomenclature. It

incorporates additional materials in Section 4, the option of pneumatic testing in Section 6, approved revisions in

Sections 3, 4, 5, and 9, updating references in Annex A, and various editorial or formatting updates.

This 2025 version included minor editing of the text, formatting adjustments, and updates to reference standards

in Annex A.

WARNING:

All valves and fittings that are produced in compliance with this Standard Practice and

anticipated for drinkable (potable) water service must comply with the U.S. Federal

Safe Drinking Water Act (SDWA), as Amended, and other federal, state and provincial,

and local regulations as applicable.

General Note: There are different protocols to show compliance with the SDWA (as

Amended), including NSF 372.

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