Gas governors : part - 1 : specification for pressure governors with nominal connection size upto 50 mm for gas appliances
Gas governors : part - 1 : specification for pressure governors with nominal connection size upto 50 mm for gas appliances
-
- London BSI 1987
- 20 p.
- BSI 6448 : part - 1 : 1987 .
DBSI 6448 : part - 1 : 1987
DBSI 6448 : part - 1 : 1987