Page 15 - Apollo - Butterfly Valves: Resilient Seated & Doubled Offset High Performance

BUTTERFLY VALVES – Double Offset High Performance

Advantages

ISO 5211 Mounting Flange Stem (blowout proof)
Universal mounting dimensions 17-4 PH stainless steel stem with
simplify valve actuation. Allows for high strength, and good corrosion
direct mounting of several actuators. resistance. Designed per API 609
standard.
Rocker Packing Gland
Shaped packing gland compensates
for uneven adjustment of gland nuts.
Anti-Extrusion Ring (under stem seals)
Stem Packing Prevents the extrusion of stem seals,
V-ring PTFE or flat graphite maintaining optimum seal.
provides positive sealing.
Bearing (upper)
Extended Neck Full length provides maximum stem
Allows for 2” of support. Made of 316 SS/PTFE
pipe insulation.

Body Seat
Robust one-piece casting in WCB An advanced free floating, pressure assisted, solid
carbon steel or CF8M stainless steel. seat design provides an interference and pressure
Available in wafer & lug style. assisted seal. This creates a positive seal under
both low and high pressure requirements. The
seat does not rely on any secondary components
to hold it in place, assuring longer service life with
less maintenance.

Positive Cast
Disc Stop
Prevents seat damage
from over-travel of the
disc beyond the closed Tangential Disc Pins
position. (not visible) 17-4 PH stainless steel disc pins are
tangentially positioned, placing them
in compression rather than shear. This
Jacking Taps robust joint design eliminates potential
Allows the use of seat failure of the disc-stem connection.
retainer bolts to aid in
retainer removal.
Disc
Standard material is 316 stainless steel.

Seat Retainer
Reliable multi-bolt retainer holds Bearing (lower)
and supports the seat. Standard Full length provides maximum stem support.
valves are suitable for bi-directional Made of 316 SS/PTFE
dead-end service at the full pressure-
temperature rating of the valve.
Same material as body material.
Thrust Ring
Centers the disc. Ensures tight shutoff
Corrosion Protection and long service life. Made of 316 SS.
Polyamide epoxy primer with high
performance polyurethane topcoat End Cap Seal
is the standard finish for carbon steel Made of PTFE or graphite.
valve bodies.

For additional information, submittal sheets and manuals, visit www.apollovalves.com
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Customer Service (704) 841-6000