BS ISO 9635-3-2014 PDF

Full title and description

STB BS ISO 9635-3:2014 — Agricultural irrigation equipment — Irrigation valves — Part 3: Check valves. This document specifies construction and performance requirements and test methods for check (non-return) valves used in agricultural irrigation systems (hydrically operated check irrigation valves of DN 15 and above), intended for use with water (including water containing fertilizers and similar agricultural chemicals) at temperatures up to 60 °C.

Abstract

ISO 9635-3:2014 defines requirements for design, materials, performance and testing of check valves for irrigation systems. It covers valves designed to operate fully open and fully closed but which may also remain in intermediate positions for extended periods; test methods to verify leakage, pressure resistance and operational behaviour are included. The standard is an updated second edition replacing earlier versions.

General information

• Status: Published / Confirmed international standard (adopted as a BS national publication).
• Publication date: ISO edition published November 2014 (ISO edition date 14 November 2014); BS adoption published 30 November 2014.
• Publisher: International Organization for Standardization (ISO); national adoption published by BSI as BS ISO 9635-3:2014.
• ICS / categories: 65.060.35 (Irrigation and drainage equipment).
• Edition / version: Edition 2 (2014).
• Number of pages: ISO core text: 7 pages; BS national publication typically issued with additional national front/back matter (document references show BS version paginated to around 16 pages).

Scope

This part of ISO 9635 applies to hydraulically operated check irrigation valves of nominal diameters DN 15 and greater, intended for use in irrigation systems with water up to 60 °C which may contain fertilizers and similar agricultural chemicals at the concentrations normally used in agriculture. It specifies construction and performance requirements and the associated test methods needed to ensure reliable, leak-tight operation in agricultural irrigation applications.

Key topics and requirements

• Definitions and terminology specific to irrigation check valves.
• Construction and material requirements appropriate for agricultural water and common fertilizers/chemicals.
• Performance criteria for leak tightness, opening/closing behaviour and endurance under typical irrigation pressures.
• Test methods to verify functional performance, pressure resistance and durability.
• Application limits (temperature up to 60 °C) and nominal diameter applicability (DN 15 and above).

Typical use and users

Primary users are manufacturers of irrigation valves and components, test laboratories, product certifiers, irrigation system designers and specifiers, agricultural equipment purchasers, and procurement/regulatory bodies that reference national/adopted standards for product compliance and selection. Farmers, irrigation contractors and maintenance personnel use the standard indirectly via specified, certified products.

Related standards

ISO 9635 is a multi-part series on irrigation valves; other parts and earlier editions (for example the 2006/2006-series parts and the original ISO 9635:1990) cover other valve types and related requirements. National adoptions such as BS ISO 9635-3:2014 reproduce the ISO text with national forewords. Users should consult the other parts of ISO 9635 for complementary requirements on different valve types.

Keywords

irrigation, irrigation valves, check valve, non-return valve, agricultural irrigation equipment, hydraulically operated valve, DN 15, test methods, leakage, ISO 9635, BS ISO.

FAQ

Q: What is this standard?

A: ISO 9635-3:2014 (published and also adopted nationally as BS ISO 9635-3:2014) is the International Standard that specifies construction, performance requirements and test methods for check (non-return) valves used in agricultural irrigation systems.

Q: What does it cover?

A: It covers hydraulically operated check irrigation valves of nominal diameter DN 15 and greater, intended for use with water (which may contain fertilizers and similar chemicals) at temperatures up to 60 °C, and it provides test methods to verify performance such as leak tightness and operational behaviour.

Q: Who typically uses it?

A: Valve manufacturers, test laboratories, product certifiers, irrigation system designers, procurement specialists, and regulatory/public bodies referencing product standards; farmers and contractors use compliant products specified to this standard.

Q: Is it current or superseded?

A: ISO 9635-3:2014 is the second edition published in 2014 and replaced earlier editions (the part of the ISO 9635 series has been revised from older 1990/2006 documents). ISO records indicate the 2014 edition as the current published/confirmed version. National adoptions such as BS ISO 9635-3:2014 correspond to that 2014 publication. Users should check the issuing bodies for any amendments or later revisions.

Q: Is it part of a series?

A: Yes — ISO 9635 is a multipart series covering hydraulically operated irrigation valves; Part 3 addresses check valves while other parts address different valve types and related requirements. See the ISO 9635 family for the other parts.

Q: What are the key keywords?

A: Irrigation valves; check valve; non-return valve; agricultural irrigation equipment; hydraulically operated valve; DN 15; test methods; ISO 9635; BS ISO.