Emerson Y610A, Y611A, Y612A Instruction Manual
Instruction Manual
Form 1477
May 2012
Y610A, Y611A, and Y612A Series
Y610A, Y611A, and Y612A Series Vacuum
Service Equipment and Relief Valves
WARNING
!
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
re and/or chemical contamination
causing property damage and personal
injury or death.
®
Fisher
valves must be installed, operated
and maintained in accordance with
federal, state, and local codes, rules
and regulations, and Emerson Process
Management Regulator Technologies,
Inc. instructions.
If a leak develops or if the outlet
continually vents gas, service to the
unit may be required. Failure to correct
trouble could result in a hazardous
condition. Only a qualied person must
install or service the unit.
vacuum breakers or relief
W1094_1
Figure 1. Type Y610A Vacuum Breaker
Introduction
Scope of the Manual
This manual describes and provides instructions and
parts lists for Y610A, Y611A, and Y612A Series
vacuum service equipment and relief valves.
Instructions and parts lists for other equipment used
with these regulators are found in separate manuals.
Product Description
The Y610A, Y611A, and Y612A Series devices are
used in a wide variety of vacuum and relief service
applications. The Y610A Series devices (Figure 1)
are used as vacuum breakers, the Y611A Series
devices are used as either vacuum breakers or relief
valves, and the Y612A Series devices are used as
vacuum regulators, and are described as follows:
www.fisherregulators.com
Type Y610A—Direct-operated vacuum breaker
with upward pointing 1 NPT vent connection, and
internal registration requiring no downstream
control line.
Type Y610AP—Same as Type Y610A except with
blocked throat, diaphragm case assembly tapped
1/2 NPT for control line connection, and O-ring
stem seal.
Type Y611A—Direct-operated relief valve with
upward pointing 1 NPT vent connection, and internal
registration requiring no downstream control line.
Type Y611AP—Direct-operated vacuum breaker with
blocked throat, 1 NPT screened side vent, diaphragm
case assembly tapped 1/2 NPT for control line
connection, and O-ring stem seal.
D103116X012
Y610A, Y611A, and Y612A Series
Specications
The Specications section gives some general Y610A, Y611A, and Y612A Series ratings and other
specications. Individual regulator data as it comes from the factory is stamped either on the closing cap or
on a nameplate (Figure 2).
Body Sizes (Inlet x Outlet) and End
Connection Style
(2)
Type Y610A, Y610AP, Y611A, Y611AP,
Y612A, or Y612AP: 1-1/2 or 2 NPT,
or NPS 2 / DN 50 CL125 FF or
CL250 RF anged
Pressure Information
(1)
Type Y610A or Y610AP Vacuum Breaker:
See Table 1
Type Y611A or Y611AP Relief Valve:
See Table 2
Type Y612A or Y612AP Vacuum Regulator:
See Table 3
1. The pressure/temperature limits in this Instruction Manual and any applicable standard limitation should not be exceeded.
2. DIN (or other) end connections threaded to various national or international thread standards can usually be supplied; consult your local Sales Ofce.
Temperature Capabilities
-20 to 150°F / -29 to 66°C
Pressure Registration
Type Y610A, Y611A, or Y612A: Internal
Type Y610AP, Y611AP, or Y612AP: External
Approximate Weights
Type Y610A, Y610AP, Y611A, Y611AP,
Y612A, or Y612AP
With 1-1/2 NPT Body:
25 pounds / 11 kg
With NPS 2 / DN 50 Body:
30 pounds / 14 kg
(1)
Type Y612A—Direct-operated vacuum regulator with
upward pointing 1 NPT vent connection, and internal
registration requiring no downstream control line.
Type Y612AP—Same as Type Y612A except with
blocked throat, diaphragm case assembly tapped
1/2 NPT for control line connection, and O-ring
stem seal.
Installation
WARNING
!
Personal injury, property damage,
equipment damage, or leakage due to
escaping gas or bursting of pressurecontaining parts may result if this
equipment is overpressured or is
installed where service conditions could
exceed the limits given in Tables 1
through 3, or where conditions exceed
any ratings of the adjacent piping or
piping connections. To avoid such
injury or damage, provide pressurerelieving or pressure-limiting devices
(as required by the appropriate code,
regulation, or standard) to prevent
service conditions from exceeding
those limits.
2
11A5497_J
Figure 2. Nameplate
Additionally, physical damage to this
equipment could cause personal injury
or property damage due to escaping
gas. To avoid such injury or damage,
install the equipment in a safe and well
ventilated location.
Equipment operation within ratings does not
preclude the possibility of damage from debris in
the lines or from external sources. This equipment
should be inspected for damage periodically and
after any overpressure condition.
MAXIMUM
ALLOWABLE
TYPES
Y610A and
Y610AP
TYPES
Y611A and
Y611AP
1. Including buildup.
INLET (BODY)
PRESSURE
psig bar psig bar
13 0.90 15 1.0
Table 1. Types Y610A and Y610AP Vacuum Breaker Pressure Information
MAXIMUM
EMERGENCY
OUTLET
(CASING)
PRESSURE
(POSITIVE)
Table 2. Types Y611A and Y611AP Relief Valve Pressure Information
MAXIMUM
MAXIMUM
ALLOWABLE
INLET (CASING)
PRESSURE
psig bar psig bar
15 1.0
(1)
OPERATING
INLET (RELIEF)
PRESSURE TO
PREVENT PART
DAMAGE
5.1 0.35
5.2 0.36
5.3 0.37
5.5 0.38
6 0.41
6.5 0.45
7.5 0.52
SET PRESSURE
RANGE (VACUUM)
With Spring Case
Above Diaphragm
1 to 3 inches w.c. /
2 to 7 mbar
1.5 to 5 inches w.c. /
4 to 12 mbar
3 to 8 inches w.c. /
7 to 20 mbar
8 to 16 inches w.c. /
20 to 40 mbar
16 to 32 inches w.c. /
40 to 80 mbar
0.25 to 3 psig /
17 to 207 mbar
(1)
With Spring Case
Above Diaphragm
3 to 4 inches w.c. /
7 to 10 mbar
3.75 to 6 inches w.c. /
9 to 15 mbar
5 to 8 inches w.c. /
12 to 20 mbar
7 to 16 inches w.c. /
17 to 40 mbar
10 to 30 inches w.c. /
25 to 75 mbar
0.75 to 1.5 psig /
52 to 103 mbar
1 to 2.5 psig /
69 to 172 mbar
Y610A, Y611A, and Y612A Series
CHANGE IN OUTLET
(CONTROLLED)
PRESSURE
REQUIRED TO
FULLY OPEN
VACUUM BREAKER
0.043 3
0.078 5
0.143 1
0.181 12
0.378 26
1.944 134
BUILDUP OVER INLET
PRESSURE REQUIRED
TO FULLY OPEN
RELIEF VALVE
psig mbar
0.089 6
0.100 7
0.124 9
0.216 15
0.351 24
0.648 45
1.026 71
With Spring Case
Below Diaphragm
0 to 2 inches w.c. /
0 to 5 mbar
0.50 to 4 inches w.c. /
1 to 10 mbar
2 to 7 inches w.c. /
5 to 17 mbar
7 to 15 inches w.c. /
17 to 37 mbar
15 to 31 inches w.c. /
37 to 77 mbar
0.25 to 3 psig /
17 to 207 mbar
INLET RELIEF
SET PRESSURE RANGE,
With Spring Case
Below Diaphragm
2 to 3 inches w.c. /
5 to 7 mbar
2.75 to 5 inches w.c. /
6.9 to 12 mbar
4 to 7 inches w.c. /
10 to 17 mbar
6 to 15 inches w.c. /
15 to 37 mbar
9 to 29 inches w.c. /
22 to 72 mbar
0.75 to 1.5 psig /
52 to 103 mbar
1 to 2.5 psig /
69 to 172 mbar
MAXIMUM
ALLOWABLE
VACUUM
psig bar psig mbar
5.1 0.35
5.2 0.36
5.3 0.37
5.6 0.39
6.1 0.42
8.0 0.55
CONTROL
SPRING
COLOR CODE,
PART NUMBER
Brown Stripe,
1D892527022
Pink Stripe,
1D765427012
Purple Stripe,
0B019727052
Gray,
1B766627062
Unpainted,
1B883327022
Black,
1A630627022
CONTROL
SPRING
COLOR CODE,
PART NUMBER
Red,
1D892627022
Red,
1D892727012
Black,
1D892727012
White Stripe,
1D893227032
Green,
1D893327032
Blue,
1H975827032
Orange,
1H975927032
Note
If this equipment is shipped mounted on
another unit, install that unit according
to the appropriate instruction manual.
1. Only personnel qualied through training
and experience should install, operate, and
maintain this equipment. For Y610A, Y611A,
or Y612A Series equipment that is shipped
separately, make sure that there is no damage to
or foreign material in it. Also ensure that all tubing
and piping have been blown free.
2. This equipment may be installed in any position
as long as the ow through the body is in the
direction indicated by the arrow cast on thebody.
If continuous operation is required during
inspection or maintenance, install a three-valve
bypass around the equipment.
WARNING
!
This equipment may vent some gas
to the atmosphere. In hazardous or
ammable gas service, vented gas
may accumulate and cause personal
3
Y610A, Y611A, and Y612A Series
Table 3. Types Y612A and Y612AP Vacuum Regulator Pressure Information
MAXIMUM
ALLOWABLE
INLET
(CASING)
PRESSURE
psig bar psig bar
15 1.03
MAXIMUM
OPERATING
INLET
PRESSURE
TO PREVENT
PART
DAMAGE
5.1 0.35
5.2 0.36
5.3 0.37
5.6 0.39
6.1 0.42
8.0 0.55
SET PRESSURE
RANGE (VACUUM)
With Spring Case
Above Diaphragm
1 to 3 inches w.c. /
2.5 to 7 mbar
1.5 to 5 inches w.c. /
4 to 12 mbar
3 to 8 inches w.c. /
7 to 20 mbar
8 to 16 inches w.c. /
20 to 40 mbar
16 to 32 inches w.c. /
40 to 80 mbar
0.25 to 3 psig /
17 to 207 mbar
With Spring Case
Below Diaphragm
0 to 2 inches w.c. /
0 to 5 mbar
0.50 to 4 inches w.c. /
1.2 to 10 mbar
2 to 7 inches w.c. /
5 to 17 mbar
7 to 15 inches w.c. /
17 to 37 mbar
15 to 31 inches w.c. /
37 to 77 mbar
0.25 to 3 psig /
17 to 207 mbar
MAXIMUM
ALLOWABLE
VACUUM
psig bar psig mbar psig mbar psig mbar
5.1 0.35
5.2 0.36
5.3 0.37
5.6 0.39
6.1 0.42
8.0 0.55
CONTROL
SPRING
COLOR
CODE,
PART
NUMBER
Brown Stripe,
1D892527022
Pink Stripe,
1D765427012
Purple Stripe,
0B019727052
Gray,
1B766627062
Unpainted,
1B883327022
Black,
1A630627022
CHANGE IN OUTLET (CONTROLLED)
PRESSURE REQUIRED TO FULLY OPEN
VACUUM REGULATOR
5/8-inch /
16 mm
Port Diameter
0.089 6.1 0.053 3.6 0.076 5.2
0.124 8.6 0.074 5.1 0.106 7.3
0.189 13 0.112 7.7 0.161 11
0.227 16 0.134 9.3 0.193 13
0.405 28 0.240 17 0.345 24
1.944 134 1.152 79 1.656 11 4
1-inch /
25 mm
Port Diameter
1-3/16-inch /
30 mm
Port Diameter
injury, death, or property damage due
to re or explosion. Vent equipment 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. A Type Y610A or Y610AP vacuum breaker
(Figure 3) is used in applications where an
increase in vacuum must be limited. An
increase in vacuum (decrease in absolute
pressure) is transmitted to the lower side of the
diaphragm, opening the disk assembly. This
permits atmosphere, or an upstream vacuum
that has higher absolute pressure than the
downstream vacuum, to enter the system and
restore the controlled vacuum to its original
pressure setting. A Type Y610A direct-operated
vacuum breaker is self-contained and requires
no control line. A Type Y610AP vacuum breaker
requires a control line from the 1/2 NPT tapping
in the diaphragm case assembly (key 20,
Figure 4) to a point downstream of the body
(key 28, Figure 4).
4. A Type Y611AP vacuum breaker (Figure 3) also
is used in applications where an increase in
vacuum must be limited. An increase in vacuum
(decrease in absolute pressure) is transmitted
to the upper side of the diaphragm, opening the
disk assembly. This permits atmosphere, or
an upstream vacuum that has higher absolute
pressure than the downstream vacuum, to enter
the system and restore the controlled vacuum
to its original pressure setting. A Type Y611AP
vacuum breaker requires a control line from the
1/2 NPT tapping in the spring case assembly
(key 23, Figure 5) to a point downstream of the
body (key 28, Figure 5).
5. A Type Y611A relief valve (Figure 3) is used to
maintain a constant inlet pressure with the outlet
owing to atmosphere or to any system whose
pressure is lower than the pressure at the relief
valve inlet. An increase in inlet pressure opens
the disk assembly, relieving the excess pressure
and restoring the inlet pressure to its original
setting. A Type Y611A direct-operated relief valve
is self-contained and requires no control line.
6. A Type Y612A or Y612AP vacuum regulator
is used to maintain a constant vacuum at the
regulator inlet. A decrease in this vacuum
(increase in absolute pressure) beyond this value
registers underneath the diaphragm and opens the
disk. This permits a downstream vacuum of lower
absolute pressure than the upstream vacuum
to restore the upstream vacuum to its original
pressure setting. A Type Y612A (Figure 6)
direct-operated vacuum regulator is self-contained
and requires no control line. A Type Y612AP
vacuum regulator requires a control line from the
1/2 NPT tapping in the diaphragm case assembly
to a point upstream of the body.
4
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