BVAA: Hot Spot - Approval of ISO 23632:2021 Design Validation Testing of Valves

What is it?

ISO 23632:2021 Industrial Valves- Design-validation testing of valves has been unanimously approved for publication by ISO following completion of the FDIS ballot stage. This new standard will soon be published and available to purchase.

ISO 23632:2021 specifies requirements and acceptance criteria for type testing, in compliance with design conditions, of metallic butterfly and ball valves used for isolating services for all industrial applications, and serves to validate the product design over 205 cycles. This document excludes testing for safety devices, control valves, thermoplastics valves and valves for water supply for human consumption (e.g. EN 1074-1 and EN 1074-2).

The standard defines the procedure for type testing of ¼ turn valves including the extension of the qualification of the tested valve to untested sizes and pressure designations of the same product range.

Why is it Important?

The purpose of this type test is to validate the seat performance within manufacturer given pressure/ temperature rating, provided by the manufacturer’s technical documentation of the product.

This type test verifies:

▪ Torque requirements and the maximum allowable stem torque (MAST), as given in the manufacturer's technical documentation.

▪ Validates the durability of seat performance and operating torque through mechanical and thermal cycles.

Type testing is the most reliable method to validate a product, covering many aspects, such as its design, material selection and manufacturing processes. It will also serve as a guide for valve selection, allowing customers to compare different valve types, designs and brands.

This standard is intended to reduce manufacturer's costs by decreasing the number of end user specific design validations that are currently required, in the absence of a current international standard.

Supersedes

First edition of the standard.

Continuous Improvement

Did we miss anything?

Hot Spots are intended to alert members and provide a brief overview of new standards, activities or procedures that are being introduced in the industry. If there is key information missing that would be helpful, please let us know so that we can improve our future service.

Please note: this Hotspot is for information purposes only. We invite comments from BVAA members only. Please also note that at time of publication ballots may be closed. For more information please contact the Secretariat: enquiry@bvaa.org.uk

Published: 30th April 2021