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Bulletin 71.1: R622
Specifications
Body Size and End Connection Style(1) Pressure Registration
112 NPT inlet and outlet Internal
Maximum Allowable Inlet PressureM
Operating: 125 psig (8,6 bar)
Emergency: 125 psig (8,6 bar)
Except 1.8 to 2.2-inches w.c. (4 to 5 mbar) spring
range which has operating and emergency
pressures of 60 psig (4,1 bar)
Maximum Allowable Outlet (Casing) Pressure(')
Operating to Avoid Internal Part Damage:
3 psid (0.21 bar d) above outlet pressure setting
Emergency: 20 psi (1 A bar)
Outlet Pressure Ranges
See Table 1
Orifice Size
1/8-inch (3,2 mm) orifice
Flow Coefficients
Wide -Open C. for Relief Sizing: 12.5
Wide -Open C. for Relief Sizing: 0.36
Cl: 35
IEC Sizing Coefficients
Xf. 0.78
Fp: 0.82
FL: 0.89
Flow Capacities
See Table 2
Relief Performance
See Figure 4
Internal Relief Performance
Start -to -Discharge is 8 to 22-inches w.c.
(20 to 55 mbar) for setpoints from
1.8 to 20-inches w.c. (4 to 50 mbar)
Start -to -Discharge is 140 to 200% over setpoint
from 20-inches w.c. to 2.2 psig (50 to 152 mbar)
Spring Case Vent Connections
3/4 NPT with removable screen
Temperature Capabilities(')
-20° to 160°F (-29- to 71-C)
Approximate Weight
2.35 pounds (1 kg)
Construction Materials
Body, Spring Case, Diaphragm Plate, and
Orifice: Aluminum
Diaphragm, Disk, and O-ring: Nibile (NBR)
Adjusting Screw and Pushpost: Delrin®
Closing Cap: ASAThennoplastic (UV -Ray Resistant)
Control Spring: Zinc -plated steel
Machine Screw, Spring Seat,
and Lever: Zinc -plated steel
Valve Stem: Zinc
Relief Valve Spring, Relief Spring Retainer,
Lever Pin, and Vent Screen: Stainless steel
1. Tne Unft m tit 9ultM or any aWtaLie st mUM Wnstatl m VwA eat to exceeded.
OeavO is a mmti owned by E.I. du Pant de tynaas and Co.
In addition, Type R622 regulators have internal relief
across the diaphragm to help minimize overpressure.
Any outlet pressure above the start -to -discharge point
of the non-adjustable relief valve spring moves the
diaphragm off of the relief valve seat, allowing excess
pressure to bleed out through the screened spring
case vent.
Table 1. Outlet Pressure Ranges
Specifications
The Specifications section lists specifications farType R822
Pressure Reducing Regulators. As it originally comes
from the factory, specifications for a given regulator
are stamped on the spring case nameplate.
OUTLET PRESSURE RANGE
CONTROL SPRING PART
NUMBER
CONTROL SPRING
COLOR CODE
SPRING WIRE DIAMETER
INCHES (mm)
SPRING FREE LENGTH.
tNCNES (aim)
1.6 to 2.24nches w.c. (4 to 5 mbar)
T 14453TOD 12
Pugge
0.051 (1.30)
3.40 (IMA)
5 to 74ndles w.c. (12 to 17 mbar)
T 14398TOO 12
orange
0.062 (1.58)
3.40 (BSA)
6.5 to 94ndies w.c. (16 to 22 mttar)
T 14399TOW 2
Yellow
0.067 (1.70)
3.61 (91.7)
9 to 134ndles w.c. (22 to 32 mbar)
T 14400TOO 12
Silver
0.072 (1.83)
4.10 (104)
13 to 204ndtes w.c. (32 to 50 mbar)
T1440IM012
Gray
0.060 (2.03)
3.60 (91.4)
16 to 354ndies w.c. (40 to 67 mbar)
T 14402TOO 12
Pint
0093(2.36)
3.52 (89.4)
1 to 2.2 psig (69 to 152 mbar)
T14403TOO12
Upt Blue
0105 (2.67)
3.66 (93.0)
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Bulletin LP-T R122H
Type R122H First -Stage Regulator
Introduction
The Type R122H is an Underwriters Laboratories listed
regulator designed for T:vo-Stage LP -Gas systems.
The unit is designed to reduce the tank pressure to an
outlet pressure of 10 psig. The compact size makes it
ideal for small domestic applications and underground
tanks. The outlet pressure setting is nonadjustable
and is factory set at a nominal 10 psig. Screened drip -
lip vents are oriented over the outlet as standard.
Features
• 20 Year Recommended Replacement Life — The
R122H is designed using rugged time proven
design concepts and constructed of corrosion
resistant materials, both internally and externally.
With proper installation and periodic inspection and
maintenance the R122H regulator will meet a 20
Year Recommended Replacement Life.
• Dual Gauge Taps — Built-in 118 inch NPT gauge
taps orificed to a number 54 drill size on both
the inlet and outlet side of the regulator allow for
easy testing.
• Durability — A fluorocarbon valve disc is utilized
to improve lockup performance in systems with
contaminated gas.
• improved Regulation — A large fabric -reinforced
diaphragm and stabilizer clip deliver accurate and
stable regulation.
• Easy Installation — The units compact size and
easily accessible inlet and outlet wrench flats make
installation easy even in the tightest installations.
FISHER
Figure 1. Type R 122H Frrst-5tage Regulator
Superior Overpressure Protection — The
combination of a high capacity relief valve and large
vent provide overpressure protection that exceeds
IJL standards. When used in conjunction with a
R622 or R652. the two -stage system will limit the
downstream pressure from the second -stage to 2
psig even in a double failure situation.
• Corrosion -Resistant — Added corrosion resistance
from an internal and external coating process for all
castings prior to painting, stainless steel relief valve
spring and retainer and a corrosion resistant relief
valve seat.
• Positive Draining Spring Case — When installed
properly with the spring case vent pointed down,
the design allows moisture formed in the spring
case to drain out limiting the problems with
corrosion and freezing water in the spring case.
EMERSON.
Process Management
PIPE AND TUBING SIZING TABLES
58-97
Table G.l (o)
Polyethylene
Plastic Pipe
Sizing Between First -Stage and Second -Stage
Regulators: Vominal Outside Diameter (IPS)
Gas: tindiluted Propane
Inlet Pressure:I 10.0 psi
Pressure Drop: 1.0 psi
Specific Gtasity: 1.52
Plastic Pipe
52 in.
4,1 in.
I in.
Pit in. I'Ve in.
2 in.
Length
SDR 9.33
SDR 11.0
SDR 11.00 SDR l0.00 SDR I L.00
SDR 11.00
(it)
10.660)
(0.860)
(1.077)
(1.328) (1554)
(1.943)
30
2143
4292
7744
13416 20260
36402
40
1535
3673
6628
11482 17340
31155
50
1626
3256
5874
10176 15368
27612
60
1473
2950
5322
9220 13924
25019
70
1355
2714
4896
848:1 12810
23017
SO
1261
2523
4555
7891 11918
21413
90
1183
2369
4274
7404 11182
20091
100
1117
2238
4037
6994 10562
18978
125
990
1983
3578
6199 9361
16820
6 150
897
1797
3242
5616 8482
15240
175
826
1653
2983
5167 7803
14020
200
778
1539
2775
4807 7259
13043
225
721
1443
2603
4510 6811
12238
250
681
1363
2459
4260 6434
11560
275
646
1294
2336
4046 6111
10979
300
617
1235
2228
3860 5830
10474
350
567
1136
2050
3551 5363
9636
400
528
1057
1907
330.1 4989
8965
430
495
992
1789
3100 4681
8411
500
468
937
1690
2928 4422
7945
600
424
849
1531
2653 4007
7199
700
390
781
1409
2441 3686
6623
S00
363
726
1311
2271 3429
6161
900
340
682
1230
2131 3217
5781
1000
322
644
1162
2012 3039
5461
1500
258
517
933
1616 2441
4385
2000
221
443
798
1383 2089
3753
IPS: Iron pipe size. SDR Standard dimension ratio
Notes:
(1) Capacities are in 1000 Bw. hr.
(2) Dimensions in parentheses are inside diameter
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