Rubber Seated
Butterfly Valve
Series 100/200
S200-0504
401 S. Highland Avenue
Aurora, IL 60506
Phone: 877-436-7977
Fax: 630-844-4124
www.henrypratt.com
Construction Specifications:
Sizes: 2" through 48"
Body: Cast Iron — Wafer or Lug*
Disc: Ductile Iron
Epoxy Coated Stainless Steel
Aluminum Bronze
Stem: Stainless Steel
Resilient Seat: EPDM BUNA-N Viton
Actuation Options: Worm Gear Lever
Pneumatic Electric
Pressure Ratings: 2"-12" — 175 psi
14" and larger — 150 psi
*for installation between ANSI Class 125 flanges
Features:
a73 All cast body machined to high tolerances. Guaranteed
standard dimensions for interchangeability of parts and
actuators.
a73 Shaft bushings are impact and corrosion resistant
materials. Protects the shaft from side thrust of actuators.
a73 Special double-V-shape of stem seal self-adjusts to protect
the stem area for either vacuum or pressure use.
a73 Stem and body are isolated from line media by seal
created between disc flats and flat surface of seat.
a73 The special snap-in Resil-O-Seat design fixes seat in
place without bonding. The Resil-O-Seat is 100% field
replaceable — no tools required.
a73 Molded O-ring in the Resil-O-Seat forms a seal against all
standard flanges. Gasketing requirements are eliminated.
a73 Disc edge is machined and buffed, providing a bubble tight
shutoff and maximum seat life.
a73 All valves are factory tested at their rated pressure.