Emerson Y600A Instruction Manual
Instruction Manual
Form 5458
December 2008
Y600A Series
Y600A Series Pressure Reducing Regulators
Introduction
Scope of Manual
This manual describes and provides instructions,
installation, maintenance, and parts lists for
Types Y600A, Y600AM, and Y600AR pressure
regulators. Instructions and parts lists for other
equipment used with these regulators are found in
separate manuals.
Product Description
The Y600A Series pressure reducing regulators may be
applied as switching valves, relay or pressure loading
regulators, or monitoring regulator pilots, and are
described as follows:
Type Y600A—Direct-operated regulator with internal
registration requiring no downstream control line.
Type Y600AM—Direct-operated regulator with blocked
throat, O-ring stem seal to prevent leakage around
the stem, and diaphragm casing tapped 1/2-inch NPT for
control line connection.
Type Y600AR—Type Y600A with internal relief valve.
Specications
Ratings and specications for the Y600A Series
regulators are given in the Specications section on
page 2. Individual regulator data is stamped on the
closing cap as it comes from the factory.
Installation
W7095
Figure 1. Type Y600A Pressure Regulator
regulator is over pressured or is installed
where service conditions could exceed
the limits given in the Specications
section, or where conditions 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.
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 and well
ventilated location.
WARNING
!
Personal injury, property damage,
equipment damage, or leakage due to
escaping gas or bursting of pressurecontaining parts may result if this
www.emersonprocess.com/regulators
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
condition. Key numbers referenced in this section are
shown in Figures 3 through 6.
D102511X012
Y600A Series
Specications
Body Sizes (Inlet x Outlet) and End
Connection Style
(1)
3/4 x 3/4 or 1 x 1-inch NPT
Maximum Inlet Pressure (Body Rating)
(2)
150 psig (10,3 bar)
Maximum Outlet Pressure (Casing)
(2)
20 psig (1,38 bar)
Maximum Operating Inlet Pressure
See Table 2
Maximum Operating Outlet Pressure to Avoid Internal
Parts Damage
(2)
2 psig (0,14 bar) above outlet pressure setting
1. End connections for other than U.S. standards can usually be provided; consult your local Sales Ofce.
2. The pressure/temperature limits in this instruction manual and any applicable standard or code limitation should not be exceeded.
Outlet Pressure Ranges
See Table 1
Flow Coefcients
See Table 2
Temperature Capabilities
–20° to 180°F (–29° to 82°C)
Spring Case Vent Connection
1/4-inch NPT
Diaphragm Case Connection
1/2-inch NPT
Approximate Weight
13 pounds (5,9 kg)
Table 1. Outlet (Control) Pressure Ranges
TYPE
NUMBER
Y600A,
Y600AM,
Y600AR
1. Minimum outlet pressure setting may be approximately 1-inch w.c. (2 mbar) lower if spring case is below diaphragm.
SPRING
COLOR
Red 1B653827052 4 to 8-inches w.c. (10 to 20 mbar) 10 to 24-inches w.c. (25 to 60 mbar)
Olive drab 1B653927022 7 to 16-inches w.c. (17 to 40 mbar)
Yellow 1B537027052 15-inches w.c. to 1.2 psig (37 to 83 mbar)
Light green 1B537127022 1.2 to 2.5 psig (0,08 to 0,17 bar) 0.5 to 2 psig (0,03 to 0,14 bar)
Light blue 1B537227022 2.5 to 4.5 psig (0,17 to 0,31 bar) 0.5 to 3 psig (0,03 to 0,21 bar)
Black 1B537327052 4.5 to 7 psig (0,31 to 0,48 bar) 1 to 4 psig (0,07 to 0,28 bar)
SPRING PART
NUMBER
OUTLET PRESSURE RANGE WITH
SPRING CASE ABOVE DIAPHRAGM
(1)
INTERNAL RELIEF STARTS TO DISCHARGE
(2)
(2)
APPROXIMATE POINT ABOVE PRESSURE
SETTING AT WHICH THE TYPE Y600AR
10 to 26-inches w.c. (25 to 65 mbar)
Table 2. Maximum Operating Inlet Pressures
MAXIMUM OPERATING INLET PRESSURE, PSIG (bar)
ORIFICE SIZE,
INCHES (mm)
1/8 (3,17) 150 (10,3) 150 (10,3) 150 (10,3) 150 (10,3) 12.3 0.35 35
3/16 (4,76) 150 (10,3) 150 (10,3) 150 (10,3) 150 (10,3) 27.6 0.79 35
1/4 (6,35) 75 (5,17) 150 (10,3) 150 (10,3) 150 (10,3) 50 1.43 35
3/8 (9,53) 35 (2,41) 60 (4,14) 60 (4,14) 60 (4,14) 110 3.14 35
1/2 (12,7) 8 (0,55) 10 (0,69) 12 (0,83) 12 (0,83) 200 5.71 35
9/16 (14,3) 5 (0,34) 6 (0,41) 8 (0,55) 8 (0,55) 250 7.14 35
If the regulator is shipped mounted on
another unit, install that unit according to
the appropriate instruction manual.
With 1.2 PSIG
(0,08 bar) or Less
Outlet Pressure
Setting
Note
With 1.2 to 2.5 PSIG
(0,08 to 0,17 bar)
Outlet Pressure
Setting
With 2.5 to 4.5 PSIG
(0,17 to 0,31 bar)
Outlet Pressure
Setting
1. Only personnel qualied through training and
experience should install, operate, and maintain a
regulator. For a regulator that is shipped separately,
make sure that there is no damage to, or foreign
material in the regulator. Also ensure that all tubing
With 4.5 to 7 PSIG
(0,31 to 0,48 bar)
Outlet Pressure
Setting
WIDE-OPEN FLOW COEFFICIENTS
FOR EXTERNAL RELIEF SIZING
C
g
C
v
and piping are free of debris.
2
C
1
Y600A Series
2. The regulator may be installed in any position as
long as the ow through the body is in the direction
indicated by the arrow cast on the body. If
continous operation is required during inspection or
maintenance, install a three-valve bypass around
the regulator.
WARNING
!
A regulator may vent some gas to the
atmosphere. In hazardous or ammable
gas service, vented gas may accumulate
and cause personal injury, death, or
property damage due to re or explosion.
Vent a regulator in hazardous gas service
to a remote, safe location away from air
intakes or any hazardous area. The vent
line or stack opening must be protected
against condensation or clogging.
3. Be certain that the vent (key 26) is not positioned
so that it can collect moisture which may drain into
the spring case. The diaphragm casing (key 4) may
be rotated to any of four positions with respect to the
body in order to obtain desired positioning. Perform
Body Area Maintenance procedure steps 1 and 4
through 8 to rotate the diaphragm casing.
2. Use a 1-inch (25,4 mm) hex rod or screwdriver to
turn the adjusting screw (key 35) either clockwise to
increase outlet pressure or counterclockwise to
decrease outlet pressure.
WARNING
!
To avoid personal injury, property
damage, or equipment damage caused
by bursting of pressure containing parts
or explosion of accumulated gas, never
adjust the control spring to produce an
outlet pressure higher than the upper
limit of the outlet pressure range for
that particular spring. If the desired
outlet pressure is not within the range
of the control spring, install a spring
of the proper range according to the
Diaphragm and Spring Case Area section
of the Maintenance procedure.
3. After making the adjustment and replacing the
closing cap (key 22), the closing cap can be wired to
the spring case (key 3) to discourage tampering.
Shutdown
4. The Type Y600AM regulator requires a downstream
control line. Be sure to install this control line before
putting the regulator into operation. The downstream
control line pipe should be at least 1/2-inch (12,7mm)
in diameter and connected to a straight section of
outlet piping at least 5 to 10 pipe diameters downstream
of the regulator. If instability due to turbulence exists,
a hand valve can be installed in a straight section of
the control line. This hand valve can be throttled down
to dampen out pulsations.
Startup and Adjustment
A Y600A Series regulator can be placed in operation by
slowly introducing inlet pressure. The regulator takes
control when downstream pressure is established.
The regulator has been adjusted at the factory to provide
approximately the reduced pressure requested on the
order. With a spring-loaded regulator, the pressure
setting may be adjusted within the spring range shown
in Table 1. To adjust the pressure setting, perform the
following steps (key numbers are referenced in Figures 3
through 6):
1. Remove the closing cap (key 22).
First close the nearest upstream shutoff valve and then
close the nearest downstream shutoff valve to vent the
regulator properly. Next, open the vent valve between
the regulator and the downstream shutoff valve closest to
it. All pressure between these shutoff valves is released
through the open vent valve, since a Y600A Series
regulator remains open in response to the decreasing
downstream pressure.
Maintenance
Regulator parts are subject to normal wear and must be
inspected and replaced as necessary. The frequency
of inspection and replacement of parts depends on
the severity of service conditions and upon applicable
codes and government regulations. Key numbers are
referenced in Figures 3 through 5 unless otherwise noted.
WARNING
!
To avoid personal injury, property damage,
or equipment damage caused by sudden
release of pressure or explosion of
accumulated gas, do not attempt any
maintenance or disassembly without
rst isolating the regulator from system
pressure and relieving all internal pressure
from the regulator.
3
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