Printed version of this standard is available at Library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail.
This British Standard specifies requirements for the design and performance of pressure operated general purpose relay valves as follows:
(a) for use on plant and appliances burning 1st, 2nd and 3rd family gasses;
(b) up to and including DN 50 connection size;
(c) for declared operating pressures up to 30 mbar1) for 1st and 2nd family gasses and up to 45 mbar for 3rd family gasses.