ANSI AWWA C111 - A21.11-17 PDF

Full title and description

ANSI/AWWA C111/A21.11-17 — Rubber-Gasket Joints for Ductile‑Iron Pressure Pipe and Fittings. This AWWA standard establishes minimum requirements for rubber‑gasket joints used with ductile‑iron pressure pipe and ductile‑iron and gray‑iron fittings, valves, hydrants, and other appurtenances for potable water, raw water, nonaggressive wastewater, and reclaimed water supply service, including materials, design, inspection, testing, marking, and shipping.

Abstract

The standard specifies the types of rubber‑gasket joints (mechanical, push‑on, and flanged) and the requirements needed to ensure a positive, durable seal for ductile‑iron pressure piping systems used in water and related services. It includes requirements for gasket materials, dimensional tolerances, joint performance (working pressure and surge allowance), verification testing, and manufacturer documentation.

General information

• Status: Superseded (replaced by AWWA C111/A21.11:2023).
• Publication date: April 1, 2017 (designation “-17”).
• Publisher: American Water Works Association (AWWA); published as an American National Standard (ANSI/AWWA).
• ICS / categories: Installations in buildings — Water supply systems (ICS 91.140 / 91.140.60) and iron & steel products (ICS 77.140) — standards for piping, joints, and related components.
• Edition / version: ANSI/AWWA C111/A21.11-17 (2017 edition).
• Number of pages: 56 pages.

Scope

This standard covers rubber‑gasket joints for ductile‑iron pressure pipe and ductile‑iron and gray‑iron fittings and appurtenances used in potable water, raw water, nonaggressive wastewater, and reclaimed water systems. It applies to mechanical, push‑on, and flanged joint types and addresses material requirements, joint geometry and tolerances, gasket specification, installation considerations, performance testing (including combined working pressure and surge allowance), inspection, marking, and shipment. Appendices provide guidance on bolts, gaskets, installation, and effects of disinfectants/chloramines on elastomers.

Key topics and requirements

• Defined joint types: mechanical joints, push‑on joints, and flanged joints, with dimensional and assembly requirements.
• Gasket materials and properties (elastomer types, resistance to water treatment chemicals, allowable tolerances, and manufacture).
• Design verification: requirement that joints withstand combined working pressure plus surge allowance as specified by pipe/fitting standards.
• Inspection and testing protocols for acceptance, including dimensional checks, material verification, and performance testing.
• Marking, packaging, and shipping requirements to ensure traceability and protection of joint components.
• Installation guidance and appendices covering bolt selection, lubricant, special requirements for flanged joints, and effects of chloramines on gaskets.

Typical use and users

Used in specifications, procurement, manufacturing, and quality control for water utilities, municipal engineers, consulting engineers, pipe and fitting manufacturers, contractors, and inspection agencies. Typical applications include design and construction of water distribution mains, transmission lines, and appurtenances where ductile‑iron pipe and fittings are specified.

Related standards

Frequently referenced and used alongside other AWWA/ANSI standards such as AWWA C110/A21.10 (ductile‑iron and gray‑iron fittings), AWWA C151/A21.51 (ductile‑iron pipe), AWWA C104/A21.4 (cement‑mortar lining), AWWA C600 (installation of ductile‑iron mains), and NSF/ANSI 61 (health effects for drinking water system components). The 2017 edition superseded earlier editions and was later replaced by the 2023 edition of AWWA C111/A21.11.

Keywords

rubber‑gasket joints, ductile‑iron pipe, push‑on joint, mechanical joint, flanged joint, gasket materials, joint testing, AWWA C111, ANSI/AWWA, potable water, reclaimed water.

FAQ

Q: What is this standard?

A: ANSI/AWWA C111/A21.11-17 is the AWWA standard that sets minimum requirements for rubber‑gasket joints used with ductile‑iron pressure pipe, fittings, valves, hydrants, and appurtenances for water and related services.

Q: What does it cover?

A: It covers types of rubber‑gasket joints (mechanical, push‑on, flanged), gasket materials and properties, joint dimensions and tolerances, design verification (including working pressure plus surge allowance), inspection and testing, marking, and delivery. Appendices give installation guidance and address chemical effects on elastomers.

Q: Who typically uses it?

A: Water utilities, municipal and consulting engineers, pipe/fitting manufacturers, contractors, specifications writers, and inspection/QA personnel use the standard for procurement, design, manufacture, installation guidance, and acceptance testing.

Q: Is it current or superseded?

A: This 2017 edition is superseded. AWWA published a later edition (AWWA C111/A21.11:2023) that replaces the -17 version; organizations should reference the 2023 edition for the current requirements.

Q: Is it part of a series?

A: Yes — C111/A21.11 is part of AWWA’s series of ductile‑iron pipe and fittings standards (for example, C110/A21.10 for fittings, C151/A21.51 for ductile‑iron pipe, C150/A21.50 for thickness design, and others) that together define materials, joints, linings, coatings, and installation practices for waterworks piping.

Q: What are the key keywords?

A: Rubber gasket, joint, ductile iron, push‑on, mechanical joint, flanged joint, gasket material, AWWA C111, ANSI/AWWA, potable water.