627 Series
4
Personal injury, property damage, equip-
ment damage, or leakage due to escaping
gas or bursting of pressure-containing
parts may result if this regulator is over-
pressured or is installed where service
conditions could exceed the limits given
in tables 1, 2, 3, and 4, or where condi-
tions exceed any ratings of the adjacent
piping or piping connections.
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices (as required by the appropriate
code, regulation, or standard) to prevent
service conditions from exceeding those
limits. The Type 627R or 627MR regulator
with internal relief will provide down-
stream overpressure protection within the
limits given in tables 1, 2, 3 and 4. If these
limits are exceeded additional down-
stream overpressure protection must be
provided by the user.
Additionally, physical damage to the
regulator could cause personal injury or
property damage due to escaping gas. To
avoid such injury or damage, install the
regulator in a safe location.
Installation
Regulator operation within ratings does not preclude the
possibility of damage from debris in the lines or from
external sources. A regulator should be inspected for
damage periodically and after any overpressure condi-
tion. Key numbers referenced in this section are shown
in figures 7 through 12. Ensure that the operating tem-
perature capabilities listed in table 1 are not exceeded.
Like most regulators, 627 Series regulators have outlet
pressure ratings that are lower than their inlet pressure
ratings. A pressure relieving or pressure limiting device
must be provided by the user for the Type 627, 627H,
627M, and 627HM regulators if the inlet pressure can
exceed the outlet pressure rating, since these regula-
tors do not have internal relief.
Type 627R regulators provide internal relief which limits
the total outlet pressure buildup over setpoint. Use table
4 to determine the total outlet pressure. This internal
relief may be adequate for the application, if not,
provide additional pressure relief or a pressure limiting
device downstream.
Note
If the regulator is shipped mounted on
another unit, install that unit according to
the appropriate instruction manual.
Perform steps 1 through 6 for all types of regulators:
1. Only personnel qualified through training and
experience should install, operate, or maintain this
regulator.
2. For a regulator that is shipped separately, make
sure that there is no damage to, or foreign material in,
the regulator.
3. Ensure that all tubing and piping have been blown
free of foreign debris.
4. The regulator may be installed in any position as
long as the flow through the body is in the direction
indicated by the arrow cast on the body.
5. If continuous operation is required during inspection
or maintenance, install a three-valve bypass around the
regulator.
N
O
I
T
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D
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7
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.
1
Table 3. Maximum Spring and Diaphragm Casing Pressure(1)
Содержание 627M
Страница 14: ...627 Series 14 Figure 7 Type 627 Regulator Components 30B3092 D ...
Страница 15: ...627 Series 15 Figure 8 Type 627R Regulator Components 30B3089 D ...
Страница 16: ...627 Series 16 Figure 9 Type 627M Regulator Components 30B6433 C 1 4 INCH NPT CONNECTION ...
Страница 17: ...627 Series 17 Figure 10 Type 627MR Regulator Components 30B6434 D 1 4 INCH NPT CONNECTION ...
Страница 18: ...627 Series 18 Figure 11 Type 627H Regulator Components 31B5374 B ...
Страница 19: ...627 Series 19 Figure 12 Type 627HM Regulator Components 31B9872 B ...
