Jordan Valve Mark 630 Series - Gas Service/High Pressure Regulator - Manual (Page 3)

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Disconnect vent line if installed. 2.
Unscrew two cap screws (9) and four cap screws 3.
(10) with hex nuts (25).
Remove the spring housing (3).
4.
Remove from the lever assembly, as a unit, the dia- 5.
phragm (11), connector head assembly (12), lower
spring guide (7) and cap screw (6).
Unscrew the cap screw (6) from the connector
6.
head (12) and disassemble the diaphragm (11).
Install a new diaphragm, making sure that it is
7.
properly centered. Reassemble connector head
assembly and lower spring guide, securely tight-
ened with the cap screw.
Engage connector head in lever assembly.
8.
Reinstall the spring housing with cap screws and 9.
nuts finger-tight only. Assure proper diaphragm
slack by slightly compressing the spring with the
adjusting screw (tighten by turning clockwise). Fi-
nally, complete the tightening of all cap screws and
nuts.
Table 1: Maximum Pressure and Pressure Drops
Port Diameter 1/8” 1/4” 3/8” 1/2”
Max. Allowable Inlet
Pressure, psig
1
1500 1500 1000 750
Max. Allowable Pressure
Drop, psid
1500 1000 500 250
† The sum of the outlet pressure setting and the maximum allowable pressure
drop determines the maximum allowable inlet pressure for a given installation.
For example, with a 3/8” seat ring orifice (maximum pressure drop of 500 psi)
and a 275 psig outlet pressure setting, the maximum inlet pressure is 775 psig
(500 psi + 275 psi + 775 psi).
Table 2: Outlet Pressure Ranges
Outlet Pressure
Range psig
27-50 46-95 90-150 150-200 200-275 275-500
Max Outlet
Pressure over
Pressure
Setting †, psig
200 200 ‡
Max Emergency
Outlet (Casing)
Pressure, psig
550
† Internal parts of the regulator may be damaged if the outlet pressure
exceeds the pressure setting beyond the amounts shown.
‡ This applies to outlet pressure settings below 350 psig only. For pressure
settings above 350 psig, outlet pressure is limited to 550 psig, the maximum
emergency outlet (casing) pressure.
Table 3: Wide-Open Flow Coefficients
Orifice Size C
g
C
v
C
1
1/8” 13.9 0.49 28.4
3/16” 31.3 1.11 28.2
1/4” 55.1 2.03 27.2
3/8” 122.5 4.61 26.6
1/2” 216.0 8.18 26.4
Table 4: High Pressure Regulator Flow Capacities (scfh of
0.6 Specific Gravity Gas; based on 20% Droop)
Outlet
Pressure
Range
psig
Inlet
Pressure
psig
Outlet
Pressure
psig
Seat Ring Orifice Diameter (inches)
1/8 3/16 1/4 3/8 1/2
27-50
60
50
900 2000 3100 5200 8100
75 1300 28500 3800 7200 10000
100 1700 3500 5700 10500 13000
150 2600 5700 8700 13000 17000
200 3500 7800 11000 16000 19000
300 5300 10500 14000 20000 23000
400 6900 13000 17000 23000 ―
550 9600 16000 20000 26000 ―
600 9800 17000 21000 ― ―
1050 17000 23000 27000 ― ―
1500 19000 25000 ― ― ―
46-95
60
50
800 1500 2400 4300 6400
75 1200 2100 3100 5500 8000
100 1500 3100 4200 7500 10000
150 2400 4500 6700 11000 14000
200 3400 6600 9400 14000 17000
300 5200 8900 11000 16000 20000
400 6800 11000 15000 20000 ―
550 9500 13000 17000 23000 ―
600 9800 14000 19000 ― ―
1050 14000 19000 22000 ― ―
1500 18000 24000 ― ― ―
46-95
100
75
1700 3200 5000 8000 13000
125 2200 4300 6700 10000 15000
200 3500 7300 10000 16000 22000
250 4400 9400 1300 19000 24000
325 5700 11000 16000 23000 27000
400 7100 14000 19000 27000 ―
575 9700 18000 23000 30000 ―
600 9900 19000 25000 ― ―
1075 18000 27000 32000 ― ―
1500 23000 32000 ― ― ―
90-150
125
100
2000 3600 5500 9200 13000
150 2500 4600 6800 11000 16000
200 3600 6600 9400 13000 22000
250 4400 8500 11000 18000 26000
300 5300 9800 14000 21000 30000
350 6100 10000 16000 25000 32000
400 7000 13000 18000 27000 ―
600 9500 18000 23000 35000 ―
1100 19500 28000 35000 ― ―
1500 25000 35000 ― ― ―