Keystone Figures AR1 and AR2 Resilient Seated Butterfly Valves0 pages

Keystone Butterfly Valves Figure AR1/AR2
General Purpose Valve

Resilient seated butterfly valves
AR1 (wafer) (2" to 36"), 2" to 12", to 175 psi
AR2 (lug) (2" to 24"), 14" to 36", to 150 psi
Features and Benefits
• Triple function resilient seat helps
provide bi-directional drop-tight
shut-off, designed to totally isolate
the valve body and stem from the
line media.
• Molded-in O-ring seat design serves
as flange seals, eliminating the need
for gaskets between the flanges and
the valve.
• Unique dovetail seat retention design
allows for convenient and economical
field replacement.
• Superior one-piece through shaft
design provides high strength and
positive disc control.
• Internal shaft seal is designed to
prevent external media from entering
valve and it also adjusts for pressure
and shaft rotation.
• Heavy-duty, corrosion resistant top
bushing delivers upper stem support,
absorbs actuator side-loading and
extends valve cycle life.
• Polished disc edge helps ensure
optimal performance and maximum
seat life.
• Stainless steel torque plug (2" to 12"),
disc screws (14" to 20") and taper
pins (24" to 36") provide positive leakproof connections while allowing for
quick and easy disassembly.
• One-piece body with extended
neck allows clearance for flanges
and insulation.
• Each valve is factory-tested to
110 percent of the manufacturer’s
pressure rating.

General Application

Technical Data

Ideally suited for many high
performance applications, such
as fire protection, water treatment,
cooling systems, food and beverage
and bulk product handling. Consult your
sales representative for appropriate
materials and specific services.

Size Range:
Figure AR1 (wafer style) 2" to 36"
Figure AR2 (lugged style) 2" to 24"

Copyright © 2014 Pentair. All rights reserved.

Flange Standard:
ANSI Class 125/150
(Consult your sales representative for additional
drilling standards.)

KEYMC-0025-US-1001