Brochure

Catalog CIC-2003-1/US
Parker Hannifin Corporation
Climate & Industrial Controls Group
Cleveland, OH
349
Industrial Refrigeration Products: Pressure Regulators
Industrial
Refrigeration
Products
Pressure Setting Ranges
Approx.
Set Point Pressure Change Factory Set Point
Code Range per Turn of (unless otherwise
Adjusting Screw specified)
A 0 - 10.3 bar 1.7 bar 2.8 bar
(0 - 150 PSIG) (25 PSI) (40 PSIG)
V 500mm Hg to 8.3 bar 1.7 bar 1.0 bar
(20" Hg to 120 PSIG) (25 PSI) (15 PSIG)
D 5.2 to 19.3 bar 3.7 bar 9.7 bar
(75 to 280 PSIG) (53 PSI) (140 PSIG)
Pressure Regulators
The Refrigerating Specialties family of pressure
regulators includes valves that control inlet,
outlet or differential pressure. Each regulator is
available with an assortment of additional
variations which enable one regulator to perform
several functions.
The Type A2 are compact, small capacity
regulators. The Type A4 are heavy-duty, high-
flow regulators available in flanged body style in
sizes 20-100mm (¾" - 4") and weld end body
style in sizes 125-200mm (5" - 8"). The
Adaptomode® system makes it possible to
order the regulator and modules separately for
stock or field conversion.
Gauge valves and gauges may be purchased
with the regulator or separately (see pages
440-441).
Specifications
Type A2A A2B A2CK A4 A4 A4
Port Size
mm 20-32 40-100 125-200
inch ¾" - 1¼"1
5
⁄8" - 4" 5" - 8"
Seat Metal-to-Metal Lapped Lapped
(PTFE on A4K) Metal-to-Metal Metal-to-Metal
Pilot Seat Chrome Plated Chrome Plated Chrome Plated Chrome Plated Chrome Plated Chrome Plated
Lapped Lapped Lapped Lapped Lapped Lapped
Metal-to-Metal Metal-to-Metal Metal-to-Metal Metal-to-Metal Metal-to-Metal Metal-to-Metal
Body Material
Gray Gray Gray Gray Gray Cast
Iron Iron Iron Iron Iron Steel
Body Connection Flanged Flanged Flanged Flanged Flanged Weld End
Flow
Kv 1.28 0.43 (Inlet) 6.2 - 15 28.6 - 116 171 - 471
Cv 1.5 0.5 7.2 - 17.5 33.4 - 135 200 - 550
Fluid Temperature
°C -45° to 105° -45° to 105° -45° to 105° -45° to 105° -50° to 105° -50° to 105°
°F -50° to 220 -50° to 220° -50° to 220° -50° to 220° -60° to 220° -60° to 220°
Operation
Direct Direct Direct
Pilot Pilot Pilot
Diaphragm Diaphragm Diaphragm
Bulletin for Reference 21-02 21-02 21-03 See Page 356 See Page 356 23-20
A2
A4
20-100mm
(¾" - 4")
A4
125-200mm
(5" - 8")
For variations "K" and "BK", the set point is
factory set and sealed. Standard set point
for each range is shown in the table to the
left. A custom setting may be specified by
adding the set point in PSIG preceded by a
"-" at the end of the model number, i.e. -90.
Set point must be valid for the range
selected.
Overview
Pressure Regulators