This complete line of all steel bodied valves with bolt-on
bonnets is designed to maintain reliability both in their seating
and back seating functions. This product line is supplied with
stainless steel stems for maximum corrosion resistance and
back seating capability. A unique carbon filled PTFE seat is
standard throughout the product line, maximizing durability
to the seating surface. In addition, a dual O-ring stem packing
design coupled with a stem packing seal is standard on all
valves 6 thru 100 mm (1⁄4 thru 4”). This innovative design
seals both the valve stem and bonnet bore with independent
O-rings, which are captured in a carbon PTFE carrier. The
addition of the packing provides for backup sealing capability in
the unlikely event of an O-ring failure.