These Clark Reliance valves are designed and manufactured for demanding applications.  Designated as high-grade valves, all models feature valve bodies and packing nuts of ASME Code Bronze.  Additional design features include an 18-position gage lever, integral seats and choice of screwed or flanged connections.  Valve control is speeded by quadruple stem threads that allow full open/closed with only one-quarter turn. 

Specification Data ..... Chains and handles that indicate open/closed positions are provided, as required by the ASME Boiler Code.   Lower valves employ a 3/8" pipe tapfor blowdown.  A complete valve set includes upper and lower valve, Pyrex tubular glass and guard rods (if mounting centers are specified) and two 5-foot chain lengths.  Valve model numbers are stamped on the top of upper valve. *Note: Clark Reliance and Northeast Controls do not recommend tubular glass for use above 250 WSP.