Chains & handles that indicate open/closed positions are provide, as required by the ASME BOILER CODE. Lower valves employ a 3/8" pipe tap for blowdown. A complete valve set included upper & lower valve, pyrex tubular glass & guard rods (if mounting centers are specified) & two 5ft. chain lengths. Valve model numbers are stamped on the top of upper valve.

NOTE: Gage Glass does not recommend tubular glass for use above 250 WSP