Pressure Reducing
Regulator
Veriflo’s APR-3 Series pressure reducing
regulator is designed with a larger
convoluted diaphragm than the APR-1.
This allows for greater sensitivity, and
provides precise outlet pressure control.
This regulator is suitable for applications
with corrosive media and environments.
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APR-3 Series
materials of construction
Wetted
Body . . . . . . . . . . . . . . . . . . . . . 316L Stainless Steel,
Hastelloy C-22®
Seat . . . . . . . . . . . . . . . . . . PCTFE(formerly Kel-F81®
Optional Vespel®
.
Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Viton®
Diaphragm. . . . . . . . . . . . . . . . . . . Hastelloy C-22®
Poppet . . . 316L Stainless Steel or Hastelloy C-22®
Poppet spring . . . . . . . . . . . . . . . . . . . . . . Inconel®
Non-Wetted
Cap . . . . . . . . . . . . . . . . . . . . . . Nickel Plated Brass
Cap nut. . . . . . . . . . . . . . . . . . . Nickel Plated Brass
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Knob . . . . . . . . . . . . . . . . . . . . . . 6061-T6 Aluminum
operating conditions
Inlet pressure . . . . . . . . . . . . . . . . . . . . . . . 3500 psig
(241 bar) maximum
Outlet pressure . . . . . . . . . . . . . . 0-5 psig (0-.3 bar)
0-30 psig (0-2 bar)
0-60 psig (0-4 bar)
0-100 psig (0-7 bar)
Temperature of
flow media. . . . . . . . . . . . . . . . . . . . . -40°F to 150°F
▼
(-40°C to 66°C)
functional performance
Design proof pressure . . . . . . . 5250 psig (363 bar)
Design burst pressure . . . . . . 10,500 psig (724 bar)
Flow capacity. . . . . . . . . . . . . . . . . . . . Cv 0.02, 0.2
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Instrumentation
Integral stop mechanism limits the
travel of the diaphragm and will also
provide an additional measure of
safety to the user.
Meets NACE standard MR-01-75.
(standard) .2 psi per 100 psi for .02 Cv
(optional) .8 psi per 100psi for .2 Cv
Design Leakage Rate
Outboard . . . . . . . . . . . . . . . . . 1 x 10-9 scc/sec He
Inboard . . . . . . . . . . . . . . . . . . . 1 x 10-9 scc/sec He
Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See curves
Internal volume . . . . . . . . . . . . . . . . . . . . . . 13.8 cc
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Convoluted diaphragm provides
outlet pressure stability with changes
in flow design.
Supply pressure effect . . . . . . . . . . . . . . . . . . . . . .
standard connections
1/8", or 1/4", female pipe threads (NPTF):
Standard Ra . . . . . . . . . . . . . . . 15 - 20 Micro Inch
(.38 to .5 Micro meter or less)
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Standard Hastelloy C-22® diaphragm
is superior in strength and corrosion
resistance, which minimizes the
hazards of a rupture.
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Oversized diaphragm provides more
sensitive pressure adjustments.
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features
approximate weight
4.2 lbs (1.9 kg)
LITP/N: 25000025 Revision 4 • 1/99
APR-3 Series
Cross Sectional Drawing
Flow Curves
APR3 .02Cv UNIT
.02 C(2000
v Unitpsig)
InletAPR3
Pressure
Outlet Pressure (PSIG
p g)
70.0
1.38 (35 mm) DIA HOLE
REQUIRED FOR PANEL
MOUNTING
5.29
(134.4 mm)
2.90
(73.2 mm)
2.29
(58.2 mm)
1/4-18NPT
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0
100
200
400
300
500
600
N2 Flow (lpm)
.69
(7.5 mm)
APR3 .02Cv UNIT
Inlet Pressure (100 psig)
.87
(22.2 mm)
Æ2.38
(60.5 mm)
Æ3.06
(77.7 mm)
75.0
10-32UNF
2 PL
70.0
Outlet Pressure (PSIG)
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
Ordering Information
APR3
S
K 2
0.0
0
10
4P 03
40
4
60
OPTIONAL FEATURES
2
MATERIALS
= 0.2 Cv
PORT STYLE
S = 316L Stainless Steel
H = Hastelloy C-22®
4 = 1/4" NPTF
2 = 1/8" NPTF
SEAT MATERIALS
K = PCTFE
V = Vespel®
INLET GAUGE
OUTLET GAUGE
PRESSURE RANGE
0 - 5 psig*
0 - 30 psig*
0 - 60 psig
0 - 100 psig
50
PM
APR3
=
=
=
=
40
N2 Flow (LPM)
BASIC SERIES
1
2
3
4
30
20
PORTING
2P
3P
4P
4BP
=
=
=
=
2 Ports
3 Ports
4 Ports
4 Ports
* Not available for units with .2 Cv
Panel Mount Ring is Standard
05 =
03 =
01 =
X =
0 - 15 psig
0 - 30 psig
0 - 100 psig
No Gauge
03 =
01 =
10 =
20 =
30 =
40 =
X =
0 - 30 psig
0 - 100 psig
0 - 1000 psig
0 - 2000 psig
0 - 3000 psig
0 - 4000 psig
No Gauge
Hastelloy C-22® is a registered trademark of Haynes International, Inc.
Kel-F 81® is a registered trademark of 3M Company.
Vespel® is a registered trademark of DuPont Company.
Viton® is a registered trademarks of DuPont Dow Elastomers.
Inconel® is a registered trademark of Inco Alloys International.
Parker Hannifin Corporation
Veriflo Division
250 Canal Boulevard, P.O. Box 4034
Richmond, CA 94804-0034
Phone (510) 235-9590 • Fax (510) 232-7396
Instrumentation