CaptiveAire 143-B User Manual
Sensus Metering Systems
Model 143-B Service Regulator
TD-1038
THE GAS INDUSTRY
Technical Data
Valve Body: Cast Iron, 125 psig Working Pressure Straight Body Angle Body
Spring and Lower Case: Die-Cast Aluminum 3/4" x 3/4" –
Orifice: Brass 3/4" x 1" 3/4" x 1"
Fulcrum Pin: Brass 3/4" x 1-1/4" 3/4" x 1-1/4"
Valve Seat/Stem: One piece molded
Buna-N seat and Zamak stem
Throat/Support/Stem Guide: Cast Aluminum
integral to lower case
Diaphragm Plate: Plated Steel 1-1/4" x 1-1/4" –
Diaphragm: Polyester fabric reinforced Buna-N with integral relief seat and case flange seal
Vent and Valve: Precision-fit polypropylene valve and seat, threaded 3/4" or 1" NPT
Adjustment Screw: ABS cycolac
Closing Cap: ABS cycolac with internal relief valve stop and a hole for available tamper seal wire
Operating Temperature: -20° F to 150° F (-28.9° C to 65.5° C)
Corrosion Protection: Dip primed chromate-based primer, topcoat enamel, optional E-coat
Internal Relief Valve: Set to relieve at 7" w.c. – 10" w.c. above normal outlet pressure setting
Regulator Spring Chart
Part number Color Normal Spring Range
071-1637-01 Silver 3.5" w.c. – 10.5" w.c.
071-1637-04 Green 3.5" w.c. – 14.0" w.c.
071-1637-06 Blue 6.0" w.c. – 8.0" w.c.
071-1637-05 Red 8.75" w.c. – 24.5" w.c.
071-1637-07 Black 1 psig – 2 psig
Orifice and Maximum Inlet Pressure
Part Number Size Pressure
018-01029-001 1/8" 125 psig
018-01029-002 3/16" 125 psig
018-01029-003 1/4" 60 psig
018-01029-035 5/16" 40 psig
018-01029-004 3/8" 30 psig
018-01029-005 1/2" 20 psig
Relief Valve Performance: Lever blocked with valve disc in the wide open position
90
1/2" 3/8"
80
70
60
50
40
30
20
10
OUTLET PRESSURE – INCHES W.C.
0
0 10 20 30 40 50 60 70 80 90 100 110
5/16"
1/4"
Set Pressure 7" w.c. 1" Vent
INLET PRESSURE – PSIG
3/16"
1/8"
90
1/2"
80
70
60
50
40
30
20
10
OUTLET PRESSURE – INCHES W.C.
0
0 10 20 30 40 50 60 70 80 90 100 110
5/16"
3/8"
1/4"
Set Pressure 7" w.c. 3/4" Vent
INLET PRESSURE – PSIG
1" x 1" 1" x 1"
1" x 1-1/4" –
3/16"
1/8"
Dimensions
Body Outlet Size A B C D E F
Straight 3/4" and 1" 1.0" 9.0" 3.0" 5.7" 5.2" 2.0"
Straight 1-1/4" 1.1" 9.0" 3.5" 7.4" 3.7" 2.0"
Angle All 1.2" 9.0" 3.5" 7.4" 3.7" 2.0"
143-B-20 143-B-10
E
F
A
D
C
E
F
B
A
D
B
For use on other compatible gases,
flow capacities must be adjusted using
the following correction factors:
TypeGas Sp Grav Corr Factor
Air 1.0 0.77
Propane 1.53 0.63
Propane-air 1.2 0.71
C
Nitrogen 0.97 0.79
Dry CO
2
1.52 0.63
For other non-corrosive gases,
the Correction
Factor is equal to:
0.6 / Specific Gravity
Model 143-B
Technical Data
Outlet Pressure Set Point 7.0" w.c. @ 50 scfh, variances
not to exceed +2.0" w.c. and -1.0" w.c. from set point.
Body Size Outlet: 3/4"
Inlet Orifice
Psig 1/8" 3/16" 1/4" 5/16" 3/8" 1/2"
1–200 225 400 450 500
2–300 350 500 550 650
5 300 525 625 650 875 900
10 400 700 1000 1025 1050 1175
15 600 900 1200 1225 1250 1300
20 775 1100 1450 1475 1500 1550
25 900 1250 1475 1500 1525 –
30 1000 1400 1525 1525 1550 –
40 1225 1575 1675 1700 – –
50 1350 1700 1800 – – –
60 1500 1825 1875 – – –
80 1650 1850 ––––
100 1700 1900 ––––
Body Size Outlet: 1"
Inlet Orifice
Psig 1/8" 3/16" 1/4" 5/16" 3/8" 1/2"
1–200 275 375 475 500
2–300 450 575 675 725
5 250 550 800 1050 1175 1200
10 400 825 1300 1550 1600 1625
15 525 1075 1600 2000 2025 2050
20 625 1300 2000 2200 2225 2300
25 700 1425 2200 2300 2325 –
30 775 1600 2325 2400 2425 –
40 950 2000 2400 2450 – –
50 1100 2200 2450 – – –
60 1300 2400 2500 – – –
80 1550 2450 ––––
100 1950 2500 ––––
Body Size Outlet: 1-1/4"
Inlet Orifice
Psig 1/8" 3/16" 1/4" 5/16" 3/8" 1/2"
1–200 275 375 400 450
2–275 425 525 550 650
5 300 525 650 775 900 1000
10 400 800 900 925 1000 1100
15 525 1050 1050 1075 1100 1200
20 625 1225 1200 1300 1400 1500
25 700 1425 1400 1425 1450 –
30 775 1600 1625 1625 1650 –
40 950 1750 1800 1900 – –
50 1100 1800 1900 – – –
60 1175 1900 1950 – – –
80 1550 2000 ––––
100 1900 2100 ––––
Flow capacities in SCFH of 0.60 specific gravity gas @ 60° F
and 14.7 psia.
For maximum performance, maximum inlet pressure should
not exceed maximum capacity rating for any given orifice size.
Outlet Pressure Set Point 2.0 psig @ 50 scfh, variances not
to exceed +/- 10% from pressure set point.
Body Size Outlet: 3/4"
Inlet Orifice
Psig 1/8" 3/16" 1/4" 5/16" 3/8" 1/2"
5 200 300 400 450 550 650
10 300 450 650 700 825 900
15 350 625 850 950 1100 1125
20 450 775 1000 1100 1250 1500
25 550 950 1200 1300 1425 –
30 625 1050 1400 1550 1700 –
40 825 1425 1625 1800 – –
50 1000 1600 1750 – – –
60 1150 1850 1950 – – –
80 1425 2200 ––––
100 1700 2250 ––––
Body Size Outlet: 1"
Inlet Orifice
Psig 1/8" 3/16" 1/4" 5/16" 3/8" 1/2"
5 200 300 400 525 575 725
10 275 500 700 875 1000 1150
15 400 650 950 1200 1300 1500
20 475 825 1250 1600 1700 1725
25 600 1050 1500 2000 2050 –
30 700 1200 1875 2200 2300 –
40 875 1600 2400 2850 – –
50 1050 1950 2700 – – –
60 1175 2325 3000 – – –
80 1450 2700 ––––
100 1700 –––––
Body Size Outlet: 1-1/4"
Inlet Orifice
Psig 1/8" 3/16" 1/4" 5/16" 3/8" 1/2"
5 200 275 400 500 525 675
10 300 450 650 750 775 900
15 375 600 825 900 950 1200
20 500 700 1000 1100 1150 1500
25 550 850 1200 1250 1350 –
30 650 1000 1400 1425 1600 –
40 775 1200 1750 1800 – –
50 900 1400 1950 – – –
60 1050 1600 2200 – – –
80 1425 1800 ––––
100 1700 2000 ––––
Straight Body
6–12 POSITION
6–9 POSITION 12 – 12 POSITION 12 – 9 POSITION
805 Liberty Boulevard Fax: (814) 375-8460
DuBois, PA 15801 www.sensus.com
800-375-8875 (open “North American Gas”)
© Sensus Metering Systems 2004 Made in USA
02-04-RV0-4M
6–6 POSITION
6–3 POSITION 12 –6 POSITION 12 –3 POSITION
Angle Body
9–6 POSITION 9– 9 POSITION 9 –12 POSITION 9 –3 POSITION
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