Data Sheet
Bulletin 71.1:1305
3
3
)
)
where,
Q = Gas ow, SCFH
(1)
(60°F and 14.7 psia)
P
1abs
= Absolute inlet pressure, psia (add 14.7 psi
to gauge inlet pressure to obtain absolute
inlet pressure)
C
g
= Wide-open gas sizing coefcient from
Specications Table
Installation
1305 Series regulators may be installed with any
orientation; however, the spring case vent must be kept
free of foreign material and weather conditions that could
clog the vent or vents, affecting regulator operation.
Typical installation is shown in Figure 4. Dimensions
are shown in Figure 5.
The regulator and its installation should be checked for
compliance with all applicable codes.
Optional materials are available for applications
handling sour gases. These constructions comply
with the recommendations of NACE International sour
service standards.
Figure 3. Typical 1305 Series Regulator Capacities
26A2513-B
A2532
Figure 4. Typical Regulator Installation
AE2715-E
A2531-1
mm
1. Multiply the ow obtained by 0.0268 to convert to normal cubic meters per hour (Nm
3
/h) at 0°C and 1,01325 bar.
mm
)
)
m
3
)
(103 )
)
)
)
10
30
50
0
(0)
500
1000
1500
2000
2500
m
3
)
The manufacturing processes and materials used by
Emerson assure that all products specied for sour
gas service comply with the chemical, physical, and
metallurgical requirements of NACE MR0175 and/or
NACE MR0103. Customers have the responsibility to
specify correct materials. Environmental limitations
may apply and shall be determined by the user.