Ball valve
The Illustrated Guide to Mechanical Building Services, Third Edition (BG 31/2017), by David Bleicher, published by BSRIA in 2017, suggests that a ball valve is: ‘Used as an isolation valve on pipework typically up to 50 mm nominal bore. Located either side of fittings that require regular maintenance, and for isolating sections of pipework.’
Guide to Controls (BG 83/2023) written by John Marrow and published by BSRIA in June 2023, suggests that ball valves: ‘…are used in applications where pipe sizes are from 15 mm to 20 mm. They are used to control the flow of hot or chilled water in terminal or fan coil units. They operate by moving a ball-shaped insert within the valve body to open or close the valve. These valves can have characterised shaped ports or characterised balls to offer a linear flow characteristic. Higher pressures on these valves can be closed off by low torque actuators.’
--BSRIA
[edit] Related articles on Designing Buildings
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Mayors are to be given planning call in powers
Mayors across England will be able to make the most important planning decisions.
The Master Builder: William Butterfield and his times. Book review.
Why construction can't afford to ignore the skills gap.
Building Safety Regulator, 19 August
Gill Kernick appointed Independent Chair of Residents’ Panel.
Connecting knowledge, technology and conservation
Building competence for the future of built heritage.
Building Regulations and Building Safety Act
CIOB publishes free advice for non-domestic clients.
Building Safety Newsletter from MHCLG.
An extraordinary record of steel engineering worldwide.
Households living near new pylons to save on bills.
ECA warns growth must not outpace grid capacity or skills.
The role of the client and decision making
CIOB response to built environment professions call for evidence.
Construction's sustainability reporting revolution
Tracking upfront embodied carbon with digital tools.