Construction, mounting, marking, testing, etc., of expansion vessels constructed in carbon steel up to 1000 litres in volume and operating at pressures up to 7 bar (grade 1) or 3 bar (grade 2); these two grades also reflect the mode of construction.
BS 4814:1976
Original price was: $264.16.$132.00Current price is: $132.00.
Specification for expansion vessels using an internal diaphragm, for sealed hot water heating systems
BSI Group , 10/29/1976
