BS 1963:1969

Specification for pressure operated relay valves for gas burning appliances

BSI Group , 02/13/1970

$95.00 $190.50

Requirements for general purpose relay valves for use in 1st and 2nd family gas systems up to 30 bar and in 3rd family gas systems up to 45 bar, with connections from ¼ in to 6 in BSP, including materials, constructional requirements, standards of performance and gas soundness with appropriate tests.