Valve Plug Stability— Rugged cage guiding provides
increased valve plug stability, which reduces
vibration and mechanical noise.
Full Pressure Drop Capability—Rugged construction
allows full pressure drop capability in HP series
valves.
Spiral-Wound Gaskets for Excellent Sealing Under
All Service Conditions—Premium materials are used
in the construction of spiral-wound gaskets for HP
Series valves. These premium materials, which
make up the standard spiral-wound gaskets, are
N06600 (alloy 600)/graphite or N07750
(alloy X750)/graphite.
Compliance with the Clean Air Act—Optional
ENVIRO-SEAL packing systems (figure 4) provide an
improved stem seal to help prevent the loss of
valuable process fluid or emission of hazardous
process fluid. The ENVIRO-SEAL packing systems
feature PTFE or graphite ULF.
Piping Economy—The availability of expanded end
connections on NPS 4 and 6 HP valves may
eliminate the need for line swages while
accommodating oversized piping arrangements.
Quick Change Trim—Maintenance is simple and can
easily be performed using common tools. Trim
components can be quickly removed and changed
with no need for special tools.