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PIPE
Edlon-3P Plastic Lined Pipe
Simtech
Micromold Solid Plastic
Hastelloy
Titanium
Alloy 20
Tantalum
VALVES
Durco Plastic Lined Valves
Inline Industries Steel Ball Valves
Tricentic High Perf. Butterfly Valves
Frisch Damper Valves
Prisemasson Sample Valves
Crane Duo-Chek II Check Valves
ACTUATORS
RCS/Dresser Electric Actuators
Automax Pneumatic Actuators
EXPANSION JOINTS/HOSE
Edlon-3P Lined Hose
Mercer Rubber Expansion Joints
FIBERGLASS
Fibergrate Molded, Pultruded,
Structural
Edwards Fiberglass Tanks
PUMPS
Wanner PVDF/PTFE Solid Plastic
STEAM TRAPS
Nicholson Steam Traps
LEVEL GAGES/SIGHT FLOW
Jogler, Inc.
TEFLON SHEET LININGS & COATINGS
Edlon-3P
ACID SAFETY SPRAY SHIELDS
Advance Products & Systems, Inc.
PLASTIC STORAGE TANKS
Chem-Tainer
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Evolution of the
Butterfly Valve Seal
Resilient Seal
Original
butterfly valve had shaft penetration through the seal
plane. Dowel pin through disc and shaft often
leaked. Note the interference between the seal and
the disc which is needed to effect a tight seal. This
will wear with use and eventually leak. |
High
Performance Seal
The next step in butterfly valve
evolution was to move the shaft from the seal plane.
Dowel pin parallel to disc does not leak. Note that
this design also relies upon interference for sealing
and will also eventually leak.
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TRICENTRIC® Metal Seal
The triple eccentricity with the
metal seal is the final step in the evolution. Square
keys are utilized for torque transmission. Since
there is no interference between mating parts during
closure, seal wear is eliminated and the seal actually
becomes tighter with use. Tight shut-off up to
1200°F. |
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Email:
info@chemicalpipingsystems.com
2090 Exchange Drive, St.
Charles, MO 63303
Phone (800)536-0043 or (636) 443-1200
Copyright©2004 Chemical Piping Systems, Inc., All Rights
Reserved
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