CaptiveAire 143-80-2 User Manual
7" w.c. Set Point – Blue Spring
3/4" Vent – No Vent Piping
2
1
⁄
2
2
1
1
⁄
2
1
1
⁄
2
0
OUTLET PRESSURE – in psi.
0 10 20 30 40 50 60 70 80 90 100
INLET PRESSURE – in psi
3/8"
Orifice
5/16"
Orifice
1/4"
Orifice
3/16"
Orifice
1/8"
Orifice
21⁄
2
2
1
1
⁄
2
1
1
⁄
2
0
OUTLET PRESSURE – in psi.
7" w.c. Set Point – Blue Spring
1" Vent – No Vent Piping
INLET PRESSURE – in psi
0 10 20 30 40 50 60 70 80 90 100
3/8"
Orifice
5/16"
Orifice
1/4"
Orifice
3/16"
Orifice
1/8"
Orifice
Sensus Metering Systems
Model 143-80 Service Regulator
TD-1301
THE GAS INDUSTRY
Models:
Technical Data
143-80-1
143-80-2
143-80-2HP
Diaphragm: Nylon fabric reinforced Buna-N with full 26 in2effective area
Vent and Valve: Precision-fit polyethylene valve and seat, threaded 3/4" or 1" NPT
Operating Temperature: -20° F to 150° F (-28.9° C to 65.5° C)
Corrosion Protection: Cases dip primed chromate conversion coating, topcoat enamel
Internal Relief Valve: Set to relieve at approximately 7" w.c. above normal outlet pressure setting
Spring Ranges
Outlet Pressure Spring Spring
Ranges Color Part Number
1
3
⁄2" to 61⁄2" w.c. Red 143-62-021-15
1
5" to 8
⁄2" w.c. Blue 143-62-021-16
6" to 14" w.c. Green 143-62-021-17
12" to 28" w.c. Orange 143-62-021-18
1
⁄2psi to 2 psi Black & White 143-62-021-22
1
⁄2psi to 3 psi Cadmium* 173-62-021-02
2 to 6 psi Black* 139-16-021-01
*For high pressure model 143-80-2HP
Valve Body: Cast Iron, 125 psig Working Pressure Straight Body
Spring and Lower Case: Die-Cast Aluminum 3/4" x 3/4"
Orifice: Stainless Steel 3/4" x 1"
Fulcrum Pin: Aluminum or Brass 3/4" x 1-1/4"
Buna-N seat pad and fiberglass reinforced nylon stem
Valve Seat/Stem: One piece molded
Throat/Support/Stem Guide: Cast Aluminum
integral to lower case
1" x 1"
1" x 1-1/4"
Diaphragm Plate: Plated Steel 1-1/4" x 1-1/4"
Orifice and Maximum Inlet Pressure
Orifice Part Number Pressure
1
⁄8" aluminum 143-62-023-37 125 psig
3
⁄16" aluminum 143-63-023-40 125 psig
1
⁄4" aluminum 143-62-023-42 60 psig
5
⁄16" aluminum 143-62-023-43 40 psig
3
⁄8" aluminum 143-62-023-44 40 psig
1
⁄2" aluminum 143-62-023-45 20 psig
5
⁄8" aluminum 143-62-023-46 10 psig
Relief Valve Performance: Lever blocked with valve disc in the wide open position
Maximum Emergency Pressure
The maximum pressure that the model 143-80-1, 143-80-2
and 143-80-2HP regulator inlets may be subjected under abnormal
conditions without causing damage to the regulator is the stated
Maximum Inlet Pressure + 50 psi
Note: For the Low Pressure Cut Off version model 143-80-6 it is
Maximum Inlet Pressure + 10 psi. See bulletin TD-1301-L
The maximum pressure to which the 143-80 diaphragm case may
be subjected under abnormal conditions without causing damage
to the internal parts of the regulator is the set point + 3 psi.
If the outlet pressure exceeds this pressure, the regulator must
be removed from service and carefully inspected. Damaged or
otherwise unsatisfactory parts must be replaced before returning
the regulator to service. The maximum outlet pressure that can
be safely contained in the 143-80 diaphragm case is 10 psi
(safely means no leakage as well as no bursting).
Full Open Capacity
Use the following formula for the full open capacity:
1. Q = K P
KP
2.Q =
I
2P
...................... (for
O(PI–PO
) .... (for
Q=maximum capacity of the regulator
(in SCFH of 0.6 specific gravity natural gas).
K=the “K” factor, the regulator constant from the table below.
P
= absolute inlet pressure (psia).
I
P
= absolute outlet pressure (psia).
O
Orifice
K 820 520 292 206 132 74 33
5
1
"
8
⁄
P
I
less than 1.894)
P
O
P
I
greater than 1.894)
O
3
"
2
⁄
5
"
8
⁄
1
3
"
16
⁄
"
4
⁄
1
"
16
⁄
"
8
⁄
B
C
A
D
E
F
Model 143-80
Technical Data
Capacities
Flow capacities in SCFH natural gas
(0.6 specific gravity – 14.65 psia – 60°F)
Capacities are based on the following maximum
variations in outlet pressure:
Red and Blue Springs – 1" w.c. droop
Orange Spring – 3" w.c. droop
Green Spring – 2" w.c. droop
Black Spring – 10% droop
Note: The 1/2 psig, 1 psig and 2 psig inlet pressures
apply only to Red and Blue springs.
Note: The last capacity figure in each column
indicates the maximum capacity for each
orifice at recommended pressure within
the optimum performance range.
The performance data is based on normal testing at
70°F flowing temperature.
Changes in performance can occur at extreme low
flowing temperatures.
Other Gases
143-80 Regulators are mainly used on natural gas.
However, they perform equally well on LP gas, nitrogen, dry CO
Other Gases Correction Factor
Air (Specific Gravity 1.0) 0.77
Propane (Specific Gravity 1.53) 0.63
1350 BTU Propane Air Mix (1.20) 0.71
Nitrogen (Specific Gravity 0.97) 0.79
Dry Carbon Dioxide
(Specific Gravity 1.52) 0.63
For other non corrosive gases: 0.6
CORRECTION FACTOR = Specific Gravity
Regulator A B C D E F
143-80 9
2
, air and others.
of the Gas
Dimensions
3
⁄8"15⁄16"37⁄16"67⁄8"53⁄4"131⁄32"
Body Size 3/4" x 3/4"
Inlet Orifice
psig 1/8" 3/16" 1/4" 5/16" 3/8" 1/2" 5/8"
1/2 ––––340450510
1–––480500510530
2––530560 570 580 600
3–420 600 620 630 650 670
5 250 560 700 720 730 770 790
7.5 310 700 840 860 880 900 900
10 370 830 950 970 1000 1020 1020
20 530 1200 1220 1240 1250 1270 –
40 860 1570 1330 1340 1450 – –
60 1200 1660 1520 ––––
80 1500 1710 –––––
125 1800 1900 –––––
Body Size 3/4" x 1" • 1" x 1"
Inlet Orifice
psig 1/8" 3/16" 1/4" 5/16" 3/8" 1/2" 5/8"
1/2 ––––350460520
1–––480550600650
2––530700 840 880 780
3–420 650 870 1000 920 810
5 250 580 890 1120 1160 950 970
7.5 310 700 1140 1340 1270 1140 1060
10 370 840 1360 1500 1330 1200 1180
20 530 1230 2000 1600 1480 1400 –
40 860 1700 2000 1640 1900 – –
60 1200 1900 2000 ––––
80 1540 2000 – – – –
125 2100 2100 –––––
Body Size 3/4" x 1-1/4" • 1" x 1-1/4" • 1-1/4" x 1-1/4"
Inlet Orifice
psig 1/8" 3/16" 1/4" 5/16" 3/8" 1/2" 5/8"
1/2 ––––350460520
1–––480550680760
2––530 700 840 1020 1030
3–420 650 870 1030 1200 1050
5 250 580 890 1180 1350 1490 1060
7.5 310 700 1140 1500 1610 1580 1060
10 370 840 1360 1700 1710 1800 1180
20 630 1230 1600 1800 1900 1900 –
40 860 1800 2200 1900 2000 – –
60 1200 2100 2400 ––––
80 1550 2200 –––––
125 2250 2400 –––––
Mounting Positions
6–12 POSITION 6 – 9 POSITION 12 – 12 POSITION 12 – 9 POSITION
6–6 POSITION 6 – 3 POSITION 12 – 6 POSITION 12 –3 POSITION
805 Liberty Boulevard
DuBois, PA 15801
800-375-8875
Fax: (814) 375-8460
www.sensus.com
(open “North America Gas”)
© Sensus Metering Systems 2006 Made in USA
09-06-Becken 50M
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