Fire Protection System UL/FM approved Butterfly/Gate Valves

[GD2]

Dear Colleagues,
I am having a toughtime getting suppliers for UL/FM approved Al-Bronze large sizes valves (around 16 inch size).

Can someone help me on this?


GDD
Canada

 

[mk3223]

IMO, the size of the bronze valve is typically up to 10" or 12". May contact the vendor, such as Mueller, and request for the additional detail. Or, is it oaky to consider the alternative material for the large size valve, i.e. ductile iron?