Parker A4WO Product Bulletin

Outlet Pressure Regulator
Product Bulletin 22-05 A
Type: A4WO, A4WOB, A4WOS, A4WOBS, A4WOK,
A4WOBK, A4WOE, A4WOES
Size: 20 - 50 mm ( 3
Design Pressure Rating: 32 bar (464 psig)
Purpose:
The A4WO outlet pressure
regulators modulate the fl ow of
refrigerant gas or liquid to maintain
a constant downstream pressure.
This improved design has a higher
working pressure, greater working
temperature range than competitive
products, and minimizes the effects
of system impurities for a more
durable operation. The A4WOs most
benefi cial features are its stainless
steel and aluminum construction,
which allows it to withstand corrosive
environments and its overall light
weight minimizes installation costs.
Contact Information:
Parker Hannifi n Corporation
Refrigerating Specialties Division
2445 South 25th. Avenue
Broadview, IL 60155-3891
phone (708) 681-6300
fax (708) 681-6306
www.parker.com
⁄ " to 2")
4
Product Features:
•
Suitable for Ammonia, CO
R-404a, and other common
refrigerants
•
Designed with corrosion resistant
material – 304 stainless steel and
aluminum
•
No body wearing surfaces
•
Stainless steel components are
resistant to wiredrawing
•
Improved performance at low loads
with a turn down ratio of 10% of
capacity
Patent Pending
•
, R-22,
Design drastically reduces foreign
2
material to fl ow from inlet to
diaphragm/seat and piston cavity
•
Light weight
•
Can be mounted in a horizontal
and vertical position
•
Several control options available
•
Fluid temperature rating: -60
o o
116 C (-76 F to 240
•
Ambient temperature rating: -40
o
to 60 C (-40
•
Complies with Pressure Equipment
Directive 97/23/EC
A4WOB
o
C to
o
F)
o C
o o
F to 140 F)