Fisher ACE95Sr User manual

ACE95 Series
D102775X012
Instruction Manual
Form5667
04/01 www.FISHERregulators.com
Figure1.TypeACE95TankBlanketingValve
Introduction
Scope of Manual
This instruction manual provides installation, startup,
andmaintenance procedures for theACE95 Series
(TypeACE95andType ACE95Sr)tankblanketing
valves. See figures 1 and 2.
Product Description
ACE95 Series tank blanketing valves are self-con-
tained, balanced, pilot operated, and used for accurate
pressure control on gas blanketing systems.These
valves help control emissions and provide protection
againstatmospheric contamination. ACE95 Series
Figure2.TypeACE95SrTank BlanketingValve
Type ACE95 andType ACE95Sr
Tank BlanketingValves
valves maintain a positive pressure and thereby reduce
the possibility of tank wall collapse during pump out
operations, in addition to preventing liquid from vaporiz-
inginto the atmosphere.
Specifications
The following page lists specifications and ratings for
ACE95 Series tank blanketing valves.Factory specifi-
cations are stamped on a nameplate fastened to the
upper actuator case of the valve.
W8156
W8155
Patent Numbers 5,884,655 and 5,836,348

ACE95 Series
2
Size and End Connection Style
1-inch:NPT
1-inch:ANSICL150 RF
1-inch:ANSI CL 150 RF,Weldneck
1-inch: NPT x 2-inch ANSI CL 150 RF
2-inch:NPT
2-inch:ANSI CL 150 RF
2-inch:ANSI CL 300 RF
2-inch:NPT x 3-inchTank Flange
Maximum Operating Inlet Pressure
200psig (13,8 bar)
Maximum Outlet (casing) Pressure
20psig (1,4 bar)
Maximum Operating Outlet Pressure
1.5psig (103 mbar)
Outlet Pressure Ranges
-5.0-inch w.c.to 1.5 psig
(-12mbarto 103 mbar)
see table 1
PressureRegistration
External
MainValve Flow Characteristic
Linear
Specifications
Flow Coefficients for ReliefValve Sizing
(110%of rated Cv)
TypeACE95:Type ACE95Sr:
Cv 1 use Cv 1.1 Cv 20 use Cv 22
Cv 2 use Cv 2.2 Cv 45 use Cv 50
Cv 4 use Cv 4.4 Cv 60 use Cv 66
Cv 7.5 use Cv 8.25
Cv 10 use Cv 11
Temperature Capabilities
Nitrile(NBR):
–20°to 180°F (–7° to 82°C)
Flourelastomer:
0°to 212°F (–0°to 100°C)
EPDM(FDA):
–20°to 212°F (–7° to100°C)
FFKM:
–20°to 212°F (–7° to100°C)
ApproximateWeight
With all accessories:
Type ACE95 - 40 lbs (18 kg)
Type ACE95Sr - 60 lbs (27 kg)
Principle of Operation
ACE95 Series tank blanketing valves are pilot oper-
ated, activated by the diaphragm, and control the vapor
space pressure over a stored liquid.The unit is con-
trolled by a very large diaphragm actuator.The over-
sized actuator offers high sensitivity to changes in tank
Table 1.Outlet (Control) Pressure Ranges
ERUSSERP)LORTNOC(TELTUO EGNAR LAIRETAMGNIRPS ,HTGNELEERFGNIRPS )mm(SEHCNI ,RETEMAIDERIWGNIRPS )mm(SEHCNI
)rabm2,1-ot21-(cwni-5.0-ot5-leetSsselniatS )58,96(57.2 )253,22(88.0
)1(
)230,2(080.0 )951,2(580.0
)1(
)rabm2ot2-(cwni-1ot1-leetSsselniatS )58,96(57.2 ))46,04(06.1
)1(
)230,2(080.0 )156,1(560.0
)1(
)rabm21ot2,1(cwni-5ot5.0 )rabm52ot01(cwni-01ot4 )rabm63ot02(cwni-51ot8 )rabm301ot43(gisp5.1ot5.0 leetSsselniatS leetSsselniatS leetSsselniatS leetSsselniatS )58,96(57.2 )8,05(00.2 )8,05(00.2 )58,96(57.2 )230,2(080.0 )548,2(211.0 )571,3(521.0 )517,5(522.0
.ylbmessamgarhpaidehtrednudetacolsignirpsdnocesehT.1
pressure.When a storage tank cools and tank vapors
condense, ACE95 Series valves replace the condens-
ing vapors with an inert gas to prevent internal tank
pressure from decreasing.Positive tank pressure
prevents outside air from contaminating the product and
reduces the possibility of atmospheric pressure collaps-
ing the tank. As demand is satisfied, the valve closes.

ACE95 Series
3
ACE95 Series valves respond to slight decreases in
internaltank pressure byopening and increasing the
flow rate of inert gas into the tank.When the tank’s
liquid level has been lowered to the desired point and
the vapor pressure set point is re-established, the valve
closes.
Installation and Startup
Personal injury, equipment damage, or
leakage due to escaping accumulated gas
or bursting of pressure-containing parts
may result if this gas blanketing system
is over pressured or installed where
service conditions could exceed the
limits given in the Specifications section
and on the appropriate nameplate, or
Figure3. ACE95 Series Operational Schematic(valve open)
INLET PRESSURE
TANK PRESSURE
INLET BLEED PRESSURE
PILOT SPRING
DIAGNOSTIC PORT
ORIFICE
PILOTVALVE (OPEN)
ROLLING DIAPHRAGM
ATMOSPHERIC PRESSURE
RANGE SPRING
SENSING
LINE
E0622
E0623
where conditions exceed any ratings of
the adjacent piping or piping connec-
tions.
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices (as required byTitle 49,Part 192,
of the U.S. Code of Federal Regulations,
by the National Fuel Gas CodeTitle 54 of
the National Fire Codes of the National
Fire Protection Agency,or by other
applicable codes) to prevent service
conditions from exceeding those limits.
Additionally,physical damage to the tank
blanketing system could result in per-
sonal injury and property damage due to
escaping accumulated gas.To avoid such
injury and damage, install the tank
blanketing valve in a safe location.

ACE95 Series
4
Figure4.ACE95SeriesTank BlanketingValveInstallation
SENSING LINE
SHUT-OFFVALVE
TANK
SHUT-OFFVALVE
SHUT-OFFVALVE
LINE STRAINER
BLANKETING GAS
SUPPLY LINE
TANKVENT
GAS
LIQUID
BLANKETING
GASTO TANK
This ACE95 Series valve was assembled and preset to
the customer specified pressure and set point.The
outlet pressure range of the valve is stamped on the
nameplate fastened to the upper actuator case.The gas
blanketing set point is the only adjustable feature on
this unit.
1. Use qualified personnel when installing, operating,
and maintaining valves. Before installing, inspect the
valve and tubing for any shipment damage or foreign
material that may have collected. Make certain the
body interior is clean and the pipelines are free of
foreign material. Apply pipe compound only to the male
pipe threads with a screwed body, or use suitable line
gaskets and good bolting practices with a flanged body.
2. Inspect the nameplate on the upper actuator case.
It displays the model number, serial number, a blanket-
ing gas supply pressure range, and the maximum inlet
pressure and set pressure.These must agree with the
system that you are blanketing.The serial number will
be needed in any communication with your Fisher Sales
Representative or the Fisher Sales Office.
3.Clean the gas blanketing supply lines of all dirt and
foreignmaterial before connectingthem to theACE95
Series tank blanketing valve.
4.The valve must be mounted so the actuator case
is horizontal.The valve should be mounted above the
tank.Three connections are required:a) blanketinggas
supply to valve, b) valve outlet to tank, and c) sensing
line to tank.
Piping Considerations
Undersized piping may inadequately
deliver blanketing gas at the specified
inlet pressure under full flow conditions.
This may result in unacceptable perfor-
mance under high demand conditions.
Unnecessarily long or restricted outlet
piping may result in poor set point
control.
Inlet Piping
Theblanketing gas supplyline should beequipped with
a Number 100 mesh strainer to remove dirt and pipe
scale. Inlet piping must be sized to adequately deliver
E0623
EMERGENCY
TANK VENT

ACE95 Series
5
blanketing gas at the specified inlet pressure under full
flowconditions.
Outlet Piping
Type ACE95 orType ACE95Sr valve outlet is piped into
the tank vapor space. Outlet piping must be full size
and self-draining to the tank.The valve should be
situated above and as close as possible to the tank
vaporspace for bestperformance.
Sensing Line
The sensing line should be 1/2-inch tubing or pipe,
must slope toward the tank, and should not contain low
points (or traps) that could catch liquid.The sensing line
must enter the tank above the liquid level at a point that
senses the vapor space pressure and is free from
turbulence associated with tank nozzles or vents.
Note
Best control is obtained when both
connections to the tank are separate. If
the tank has only one available nozzle,
contact Fisher Controls for alternate
methods of installation. A single array
manifold is available for such situations.
Gauges and Shut-OffValves
Inlet gas shut-off valves are desirable for servicing. If
this ACE95 Series tank blanketing valve was not
ordered with an inlet pressure gauge, it is advisable to
install a gauge between the inlet shut-off valve and the
blanketingvalve.
Note
Safety considerations may dictate full
port shut-off valves between the tank and
blanketing valve, and at the valve inlet.
Startup, Adjustment, and Shutdown
Note
Tank vents and safety relief valves must
be in place and operating.
Always open the outlet valve before the
inlet valve. Operation in the reverse
order could result in inlet pressure being
applied to the actuator casing, poten-
tially damaging it.
Startup
1. Open shut-off valves between the blanketing valve
andthetank(bothsensingandoutlet).Seefigure4.
2. Slowly open the supply line shut-off valve (to the
blanketing valve) and leave it fully open.
3. Monitor the tank vapor space pressure.
Adjustment
The set point of this unit is factory set. If an adjustment
is to be made, it should be done so in small increments
while the unit is supplying gas to the tank.To change
the set point:
1. Unscrew and remove the actuator cap (key 1) from
the top of the spring case (key 7). See figure 5.
2. Loosen the lock nut (key 3) and turn the adjusting
screw (key 2) clockwise to raise the set point. (Turning
the screw counter-clockwise lowers the set point.)
3. Observe the effects of the change.
4.When the adjustment is complete, tighten the lock
nut (key 3) and replace the actuator cap (key 1).
ADJUSTING SCREW
(KEY 2)
LOCK NUT
(KEY 3)
ACTUATOR CAP
(KEY 1)
SPRING CASE
(KEY 7)
VENT
(KEY 6)
Figure5.SpringCase,Adjusting Screw,andActuator Cap
W8160

ACE95 Series
6
ERUSSERP(CITSONGAID )REBMAHC SUTATS
erusserpylppustelniotlauqE .desolcerasevlavniamdnatoliP .erusserptesevobarotaknaT
ylppustelniwolebylthgilS erusserp
.knatotsagseilppusevlavtoliP teswolebtsujsierusserpknaT .erusserp
ylppustelniwoleblleW erusserp
htoberasevlavniamdnatoliP knaT.knatehtotsaggniylppus .tniopteswolebsierusserp
Table 2.Diagnostic Analysis Pressure Ranges
In order to evaluate a valve, examine the valve name-
plate to determine the Cv and inlet pressure range main
valve spring.The inlet pressure gauge indicates actual
pressure supplied to the valve.
Follow these steps and refer to the diagnostics tables
on the following pages to evaluate a valve under actual
operatingconditions:
1. Select the table (tables 3 through 8) that corre-
sponds to the Cv and inlet pressure range of your
valve.
2. Determine the actual valve operating inlet pressure
in the first column of the diagnostics table.
3. In the second column of the table, determine the
pressure of the pilot as it opens.
4.Determine the diagnostic pressure for the start to
open pressure of the main valve in the third column.
5.The fourth column displays the diagnostic pressure
for the full open pressure of the main valve.
There are four pressures involved in evaluating a valve:
actual inlet pressure, pressure to start opening pilot
valve, pressure to start opening main valve, and
pressure to fully open main valve.
Actual Inlet Pressure:The gas pressure supplied to
the inlet of the valve.This is the maximum diagnostic
pressure.
Pressure to Start Opening PilotValve:The diagnostic
pressure drops to this value as the valve senses
decreasing tank pressure.The main valve remains
closed at this pressure.
Pressure to Start Opening MainValve:The diagnostic
pressure drops to this level as the tank pressure
decreases and reaches the valve set point.The pilot is
fully open at this pressure.
Pressure to Fully Open MainValve: At this point, both
the main valve and pilot valve are fully open and
supplying gas to the tank.
Maintenance
Valve 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 the requirements of
local, state, and federal regulations. Due to the care
Fisher Controls takes in meeting all manufacturing
requirements,use only replacement partsmanufactured
or furnished by Fisher Controls.
All O-rings, gaskets, and seals should be lubricated
witha good grade ofgeneral purpose lubricant and
installed gently rather than forced into position. Ap-
proved lubricant, sealant, and adhesive are as follows:
Lubricant: Dow Corning

111
Sealant: Loctite

PST #592, Teflon

Tape
Adhesive: Loctite

#222
Be certain that nameplates are updated to accurately
indicate any field changes in equipment, materials,
service conditions, or pressure settings.
Shutdown
Installation arrangements vary, but in any installation it
is important to open and close valves slowly and to
close the upstream shut-off valve first when shutting
down the system.
Diagnostics
Note
If a diagnostics pressure gauge was not
ordered with the unit, a pressure gauge
must be installed in the diagnostic port to
perform diagnostic analysis.
Diagnostics are an optional feature of the ACE95
SeriesTank Blanketing valves that aid in evaluating
valve operation.The diagnostic analysis relies on the
relationship of pilot pressure and pressure in the main
valve chambers (see figure 3).The basic relationships
are as follows:

ACE95 Series
7
Monthly Maintenance
1.Visually inspect the unit to ensure tight connec-
tions, tight seals, and safe operation.
2. Observe the blanketing pressure.
3. Inspect the inlet pressure for the proper pressure
range(stamped on the valvenameplate).
Annual Maintenance
1.Visually inspect the unit to ensure tight connec-
tions, tight seals, and safe operation.
2. Observe the blanketing pressure.
3. Inspect the inlet pressure for the proper pressure
range(stamped on the valvenameplate).
4.Visually inspect valve for any external wear.
5. If there is evidence of leakage or unstable internal
motion, a rebuild with seal replacement and
relubricationmaybe in order.
Disassembly and Assembly
Before removing the valve from the line,
ensure that it is isolated from the gas
YLPPUSTELNILAUTCA ,EVLAVOTERUSSERP )rab(GISP
ERUSSERPTROPCITSONGAID
TOLIPNEHW)rab(GISP NEPOOTSTRATS EVLAVNIAMNEHW)rab(GISP NEPOOTSTRATS SIEVLAVNIAMNEHW)rab(GISP NEPOYLLUF
)rab7,1(52)rab6,1(42)rab6,0(9)rab1,0(2
)rab1,2(03)rab0,2(92)rab9,0(31)rab4,0(6
)rab4,2(53)rab3,2(43)rab1,1(61)rab6,0(9
)rab8,2(04)rab7,2(93)rab4,1(02)rab9,0(31
)rab1,3(54)rab0,3(44)rab7,1(42)rab2,1(71
)rab5,3(05)rab4,3(94)rab9,1(82)rab5,1(12
YLPPUSTELNILAUTCA ,EVLAVOTERUSSERP )rab(GISP
ERUSSERPTROPCITSONGAID
TOLIPNEHW)rab(GISP NEPOOTSTRATS EVLAVNIAMNEHW)rab(GISP NEPOOTSTRATS SIEVLAVNIAMNEHW)rab(GISP NEPOYLLUF
)rab6,3(15)rab5,3(05)rab0,2(92)rab3,0(5
)rab1,4(06)rab0,4(95)rab5,2(63)rab8,0(21
)rab8,4(07)rab7,4(96)rab0,3(34)rab3,1(91
)rab5,5(08)rab4,5(97)rab6,3(15)rab9,1(72
)rab2,6(09)rab1,6(98)rab0,4(95)rab3,2(43
)rab9,6(001)rab8,6(99)rab6,4(66)rab9,2(24
)rab6,7(011)rab5,7(901)rab1,5(47)rab5,3(05
)rab3,8(021)rab2,8(911)rab6,5(18)rab9,3(75
Table 3.Type ACE95 DiagnosticsTable: Cv 1through 4, Inlet Pressure Range Spring25 to 50 psig (1,7 to3,5 bar)
Table 4.Type ACE95 DiagnosticsTable:Cv 1through 4, Inlet PressureRange Spring 51 to 120 psig (3,5 to 8,3 bar)
supply pressure and that all pressure has
been released from the valve. (The drain
on the inlet filter is convenient to bleed
off gas.) All tank connections must be
closed or sealed in accordance with your
plant’s operating and safety procedures. If
installed, electrical connections to the
explosion proof switch must be deacti-
vated before opening the enclosure or
disconnecting the wiring (in accordance
with codes and safety practices).
It is recommended that all seals and diaphragms be
replaced as a matter of good practice whenever a valve
is disassembled and re-assembled.Parts kits are
availablethrough either your Fisher SalesRepresenta-
tive or the Fisher Sales Office.
If you are performing disassembly or assembly opera-
tions on a Type ACE95Sr valve, refer to the Parts List
and see figure 8.If you are working on aType ACE95
valve, refer to the Parts List and see figure 9.
Note
Have your model number,serial number,
inlet pressure and set pressure range, Cv
value, and tank vent/relief setting avail-
able when ordering parts.Valve informa-
tion is on the nameplate (on the upper
actuatorcase).

ACE95 Series
8
YLPPUSTELNILAUTCA ,EVLAVOTERUSSERP )rab(GISP
ERUSSERPTROPCITSONGAID
TOLIPNEHW)rab(GISP NEPOOTSTRATS EVLAVNIAMNEHW)rab(GISP NEPOOTSTRATS SIEVLAVNIAMNEHW)rab(GISP NEPOYLLUF
)rab3,8(121)rab2,8(021)rab1,5(47)rab1,2(03
)rab0,9(031)rab9,8(921)rab6,5(18)rab6,2(73
)rab7,9(041)rab6,9(931)rab1,6(88)rab1,3(54
)rab3,01(051)rab2,01(941)rab6,6(69)rab7,3(35
)rab0,11(061)rab9,01(951)rab2,7(401)rab1,4(06
)rab7,11(071)rab6,11(961)rab7,7(111)rab7,4(86
)rab4,21(081)rab3,21(971)rab2,8(911)rab2,5(57
)rab1,31(091)rab0,31(981)rab8,8(721)rab7,5(38
)rab8,31(002)rab7,31(991)rab2,9(431)rab3,6(19
YLPPUSTELNILAUTCA ,EVLAVOTERUSSERP )rab(GISP
ERUSSERPTROPCITSONGAID
TOLIPNEHW)rab(GISP NEPOOTSTRATS EVLAVNIAMNEHW)rab(GISP NEPOOTSTRATS SIEVLAVNIAMNEHW)rab(GISP NEPOYLLUF
)rab7,1(52)rab6,1(42)rab8,0(11)rab0,0(0
)rab1,2(03)rab0,2(92)rab0,1(41)rab2,0(3
)rab4,2(53)rab3,2(43)rab2,1(71)rab4,0(6
)rab8,2(04)rab7,2(93)rab5,1(12)rab6,0(9
)rab1,3(54)rab0,3(44)rab7,1(42)rab9,0(31
)rab5,3(05)rab4,3(94)rab9,1(72)rab1,1(61
Table 5.TypeACE95 DiagnosticsTable:Cv 1through 4, Inlet Pressure Range Spring121 to200 psig (8,3 to13,8 bar)
Table 6.Type ACE95 DiagnosticsTable:Cv 5through 10, Inlet Pressure Range Spring 25 to50 psig (1,7to 3,5 bar)
2. Remove the upper and lower diaphragm plates
(keys 10 and 48) and the diaphragm (key 11). (The
actuator gasket (key 12) sits on top of the diaphragm.)
In cases where the pressure range is positive, the
upperdiaphagm plate is larger thanthe lower diaphragm
plate.
3. Remove the internal bonnet screws (key 28) that
attach the lower actuator case (key 30) to the bonnet.
Remove the lower actuator case and the actuator
gasket (key 27).
4. If you are performing disassembly operations on a
Type ACE95Sr, remove the cap screws (key 50) that
attach the bonnet (key 17) to the body (key 18).
5. Lift the bonnet (key 17) from the body (key 18).
Note
Slightly rotating the bonnet may help
loosen the O-ring (key 19).
Main Valve Disassembly
1. Remove the main valve (key 25) along with the
main valve spring (key 26), spring shim (key 34, 25 to
50 psig,Type ACE95 only), and spring guide (key 49,
Type ACE95Sr only) from the bonnet (key 17).
2. Unthread the screw (key 20) from the main valve.
Disassembly
To avoid personal injury resulting from
sudden release of pressure, isolate the
valve from all pressure and cautiously
release trapped pressure from the pilot or
valve before attempting disassembly.
Spring Case Disassembly
1. Remove the actuator cap (key 1) and the spring
load by unthreading the adjusting screw (key 2). See
figure 5.
2. Unthread the hex-head screws, lock washers, and
nuts (keys 32, 28, and 31) from the upper and lower
actuator cases (keys 33 and 30). Lift the upper actuator
case from the lower actuator case.
3. Remove the spring seat and range spring (keys 5
and8).
Actuator/Diaphragm Disassembly
1. Disassemble the diaphragm by unthreading the
diaphragmretaining nut (key 13)fromthe diaphragm
bolt (key 15).

ACE95 Series
9
YLPPUSTELNILAUTCA ,EVLAVOTERUSSERP )rab(GISP
ERUSSERPTROPCITSONGAID
TOLIPNEHW)rab(GISP NEPOOTSTRATS EVLAVNIAMNEHW)rab(GISP NEPOOTSTRATS SIEVLAVNIAMNEHW)rab(GISP NEPOYLLUF
)rab5,3(15)rab5,3(05)rab7,1(42)rab2,0(3
)rab1,4(06)rab0,4(95)rab1,2(03)rab6,0(9
)rab8,4(07)rab7,4(96)rab5,2(63)rab0,1(51
)rab5,5(08)rab4,5(97)rab9,2(24)rab5,1(22
)rab2,6(09)rab1,6(98)rab4,3(94)rab9,1(82
)rab9,6(001)rab8,6(99)rab8,3(55)rab3,2(43
)rab6,7(011)rab5,7(901)rab2,4(16)rab8,2(14
)rab3,8(021)rab2,8(911)rab7,4(86)rab2,3(74
YLPPUSTELNILAUTCA ,EVLAVOTERUSSERP )rab(GISP
ERUSSERPTROPCITSONGAID
TOLIPNEHW)rab(GISP NEPOOTSTRATS EVLAVNIAMNEHW)rab(GISP NEPOOTSTRATS SIEVLAVNIAMNEHW)rab(GISP NEPOYLLUF
)rab3,8(121)rab2,8(021)rab3,4(36)rab2,2(13
)rab0,9(031)rab9,8(921)rab8,4(96)rab6,2(73
)rab7,9(041)rab6,9(931)rab2,5(57)rab0,3(34
)rab3,01(051)rab2,01(941)rab7,5(28)rab4,3(94
)rab0,11(061)rab9,01(951)rab1,6(88)rab9,3(65
)rab7,11(071)rab6,11(961)rab5,6(49)rab3,4(26
)rab4,21(081)rab3,21(971)rab0,7(101)rab7,4(86
)rab1,31(091)rab0,31(981)rab4,7(701)rab2,5(57
)rab8,31(002)rab7,31(991)rab8,7(311)rab6,5(18
Table 7.Type ACE95 DiagnosticsTable:Cv 5through 10, Inlet PressureRange Spring51 to 120 psig (3,5 to8,3 bar)
Table 8.Type ACE95DiagnosticsTable:Cv 5through 10, Inlet PressureRange Spring121 to 200 psig (8,3 to 13,8 bar)
3. Remove the plug (key 22) from the main valve (key
25).See figure 7.
4.Insert wooden dowel rod (or similar blunt tool)
through the bottom of the bonnet bore to remove the
cage (keys 35 and 40) sub-assembly.
Pilot/Cage Disassembly
Do not wrench or bend the stem of the
poppet (key 42). Use soft-jawed pliers to
hold the piston without damaging it.
1.The upper cage (key 40) will readily separate from
the lower cage (key 35). See figure 6.
2. Gently press the poppet stem (key 42) to remove
the pilot from the upper cage (key 40).
3.Insert a small drill bit into the cross-drilled hole on
the poppet (key 42) to turn and loosen. Unthread the
poppet from the piston (key 37). Remove the rolling
diaphragm(key38).
Assembly
When assembling theType ACE95 orType ACE95Sr
tank blanketing valve, clean all parts, inspect for
unusual wear, and lightly lubricate all O-rings and the
groovethat locates the rollingdiaphragm bead. See
figures 8 and 9.
Bonnet Sub-Assembly
Prepare the bonnet (key 17) by installing two (2) internal
O-rings(key 16).
Pilot/Cage Sub-Assembly
Refer to figures 6, 8, and 9 when performing pilot/cage
sub-assemblyoperations.
1. Apply Loctite

#222 to the piston threads. Place
the rolling diaphragm (key 38) over the threaded portion
of the piston (key 37).Position the bead as shown in
figure 6.
2.Thread the poppet (key 42) onto the piston (key
37). Use soft-jawed pliers to restrain the piston so it is
not damaged. Do not hold the poppet by the poppet
stem.Insert a small drill bit into the cross-drilled hole
on the poppet stem (key 42) to turn and tighten.
3. Slide the O-ring (key 39) onto the poppet (key 42).
4. Place the pilot sub-assembly into the upper cage
(key 40).

ACE95 Series
10
YLPPUSTELNILAUTCA ,EVLAVOTERUSSERP )rab(GISP
ERUSSERPTROPCITSONGAID
TOLIPNEHW)rab(GISP NEPOOTSTRATS EVLAVNIAMNEHW)rab(GISP NEPOOTSTRATS SIEVLAVNIAMNEHW)rab(GISP NEPOYLLUF
)rab7,1(52)rab6,1(42)rab1,1(61)rab3,0(5
)rab1,2(03)rab0,2(92)rab4,1(02)rab6,0(9
)rab4,2(53)rab3,2(43)rab7,1(42)rab0,1(41
)rab8,2(04)rab7,2(93)rab0,2(92)rab2,1(81
)rab1,3(54)rab0,3(44)rab3,2(33)rab6,1(32
)rab5,3(05)rab4,3(94)rab6,2(83)rab9,1(72
Table 9.Type ACE95Sr DiagnosticsTable:Cv 20 through 60,Inlet Pressure RangeSpring 25 to 50 psig(1,7 to 3,5 bar)
YLPPUSTELNILAUTCA ,EVLAVOTERUSSERP )rab(GISP
ERUSSERPTROPCITSONGAID
TOLIPNEHW)rab(GISP NEPOOTSTRATS EVLAVNIAMNEHW)rab(GISP NEPOOTSTRATS SIEVLAVNIAMNEHW)rab(GISP NEPOYLLUF
)rab5,3(15)rab4,3(05)rab7,2(93)rab8,0(11
)rab1,4(06)rab0,4(95)rab3,3(84)rab3,1(91
)rab8,4(07)rab7,4(96)rab9,3(75)rab9,1(82
)rab5,5(08)rab4,5(97)rab6,4(66)rab6,2(73
)rab2,6(09)rab1,6(98)rab2,5(57)rab2,3(64
)rab9,6(001)rab8,6(99)rab8,5(48)rab8,3(55
)rab6,7(011)rab5,7(901)rab4,6(39)rab4,4(46
)rab3,8(021)rab2,8(911)rab0,7(201)rab0,5(37
Table 10.Type ACE95Sr DiagnosticsTable:Cv 20 through 60, Inlet PressureRange Spring51 to 120 psig (3,5 to 8,3 bar)
5. Press the lower cage (key 35) and upper cage (key
40) together to ensure the groove in the lower cage
engagesthe bead on the rolling diaphragm (key38).
Note
Ensure that the rolling diaphragm bead is
positioned so that it sits in the groove of
the lower cage (see figures 8 and 9). If it
does not, the rolling diaphragm was
installed upside-down in Cage Sub-
Assembly step 2.
6. Remove the lower cage (key 35).
7. Lubricate the piston (key 37) and lower cage (key
35)groove.
8. Install the pilot spring (key 36) into the piston (key
37) and re-install the lower cage (key 35).
9. Hold the pilot sub-assembly together and insert it
into the bonnet (key 17). Press firmly (the bonnet O-
rings will offer resistance).
10. Press the poppet stem. It should freely move up
and down. If it does not, repeat the procedure to this
point to determine the cause.
Note
Use soft-jawed pliers to restrain the main
valve (key 25) while applying Loctite


#222 to the threads of the screw (key 20).
Main Valve Sub-Assembly
1. Prepare the main piston (key 25) by installing the
plug and O-ring (keys 22 and 23) with the screw (key
20) and lock washer (key 21). Apply Loctite

#222 to
the screw threads.
2. Install the main valve spring (key 26), spring shim
(key 34, 25-50 psig,Type ACE95 only), and spring
guide valve (key 49, 25-50/51-120 psig,Type ACE95Sr
only) into the piston (key 25).
3. Place the main valve sub-assembly (piston, spring,
and plug (keys 25, 26, and 22)) into the body (key 18).
4. Place an O-ring (key 19) into the body (key 18).
Body Sub-Assembly
1. Place the bonnet (key 17) onto the body (key 18)
and main valve (key 25).
2. Press firmly to seat the bonnet O-ring joint. If you
areperforming assemblyoperations forthe ACE95Sr,
attach the bonnet (key 17) to the body (key 18) with
four cap screws and lock washers (keys 50 and 51).

ACE95 Series
11
YLPPUSTELNILAUTCA ,EVLAVOTERUSSERP )rab(GISP
ERUSSERPTROPCITSONGAID
TOLIPNEHW)rab(GISP NEPOOTSTRATS EVLAVNIAMNEHW)rab(GISP NEPOOTSTRATS SIEVLAVNIAMNEHW)rab(GISP NEPOYLLUF
)rab3,8(121)rab3,8(021)rab1,7(301)rab1,4(06
)rab0,9(031)rab9,8(921)rab7,7(111)rab7,4(86
)rab7,9(041)rab6,9(931)rab3,8(021)rab3,5(77
)rab3,01(051)rab3,01(941)rab9,8(921)rab0,6(68
)rab0,11(061)rab0,11(951)rab5,9(831)rab6,6(59
)rab7,11(071)rab7,11(961)rab1,01(741)rab2,7(401
)rab4,21(081)rab3,21(971)rab8,01(651)rab8,7(311
)rab0,31(091)rab0,31(981)rab4,11(561)rab4,8(221
)rab8,31(002)rab7,31(991)rab0,21(471)rab2,9(431
Table 11.Type ACE95Sr DiagnosticsTable:Cv 20 through60,InletPressure Range Spring121 to 200 psig (8,3 to 13,8 bar)
3. Place the actuator gasket (key 27) and the lower
actuator case (key 30) onto the bonnet (key 17).
4. Install lock washers (key 28), sealing bushings
(key 46,Type ACE95 only), and hex-head screws (key
29).
5.Tighten all hex-head screws (key 29) uniformly.
Diaphragm Sub-Assembly
1. Place an O-ring (key 14) into the groove of the
diaphragmbolt (key 15).
2. Build the diaphragm sub-assembly with the lower
diaphragmplate (key 48), diaphragm(key 11), and
upper diaphragm plate (key 10).Fasten the plates
together with the diaphragm bolt (key 15) and the
diaphragmretaining nut(key 13).The diaphragm
retaining nut sits on the upper diaphragm plate. Apply
Loctite

#222 to the diaphragm bolt.
Note
Two different diaphragm plates are used
when the pressure range is positive. In
cases where the pressure range is posi-
tive, the upper diaphagm plate (key 10) is
larger than the lower diaphragm plate
(key48).
3. If you are using a negative spring range, install the
lowerrange spring (key162) into the loweractuator
case (key 30).
4. Place the diaphragm sub-assembly into the lower
actuator case (key 30) with the diaphragm retaining nut
(key 13) on top. Place the actuator gasket (key 12) on
top of the diaphragm (key 11) and align the holes with
those on the lower actuator case (key 30).
5. If it was removed, place the spring case gasket
(key 9) between the spring case (key 7) and upper
Figure6. Cage Sub-Assembly
UPPER CAGE
(KEY 40)
POPPET (STEM)
(KEY 42)
PISTON
(KEY 37)
CROSS-DRILLED HOLE
ROLLING DIAPHRAGM
(KEY 38)
LOWER CAGE
(KEY 35)
W8162
W8161
O-RING
(KEY 39)
actuator case (key 33) before attaching the spring case
to the upper actuator case. Attach the spring case to
the upper actuator case with hex-head screws (key 29).
6. Place the range spring (key 8) and spring seat (key
5)onto the diaphragmsub-assembly over thedia-
phragmretaining nut (key 13).
7. Place the upper actuator case (key 33) over the
range spring (key 8), spring seat (key 5), and the lower
actuator case (key 30).
8. Build the actuator case by installing hex-head
screws, lock washers, and nuts (keys 32, 28, and 31)
into the upper and lower acutator cases (keys 33 and
30). Use a washer (key 47) on steel cases.
9.Thread the range spring adjusting screw (key 2) in
about halfway.

ACE95 Series
12
Key Description Part Number
3 Lock Nut
0.5 to 5 in wc / (1,2 to 12 mbar) GC060314X02
4 to 10 in wc / (10 to 25 mbar) GC060313X02
8 to 15 in wc / (20 to 36 mbar) GC060313X02
0.5 to 1.5 psi/ (34 to 103 mbar) GC060313X02
-1.0 to 1.0 in wc / (-2 to 2 mbar) GC060314X02
-5 to -0.5 in wc (vac) / (-12 to 1,2 mbar) GC060314X02
4* O-Ring
Nitrile 1F463606992
EPDM/FDA 1F4636X0082
FKM 1N571406382
FFKM 1F4636X0052
5 Spring Seat
0.5 to 5 in wc / (1,2 to 12 mbar) GC050501X02
4 to 10 in wc / (10 to 25 mbar) GC050501X02
8 to 15 in wc / (20 to 36 mbar) GC050501X02
0.5 to 1.5 psig / (34 to 103 mbar) GC050502X02
-1.0 to 1.0 in wc / (-2 to 2 mbar) GC050501X02
-5 to -0.5 in wc (VAC) / (-12 to -1,2 mbar) GC050501X02
6 Vent (Y602-A12) 27A5516A012
7 Spring Case
Stainless Steel GC053101X02
Steel GC053101X32
8 Range Spring
0.5 to 5 in wc / (1,2 to 12 mbar) GC220701X22
4 to 10 in wc / (10 to 25 mbar) GC220702X22
8 to 15 in wc / (20 to 36 mbar) GC220703X22
0.5 to 1.5 PSI / (34 to 103 mbar) GC220708X22
-1.0 to 1.0 in wc / (-2 to 2 mbar) GC220701X22
-5 to -0.5 in wc (VAC) / (-12 to -1,2 mbar) GC220701X22
9* Gasket (spring tower) GC070428X02
10 Diaphragm Plate (upper) GC260104X02
11 Diaphragm (main) - FEP GC070234X72
12* Gasket (actuator) GC070427X02
13 Diaphragm Retaining Nut
0.5 to 5 in wc / (1,2 to 12 mbar) GC053208X02
4 to 10 in wc / (10 to 25 mbar) GC053208X02
8 to 15 in wc / (20 to 36 mbar) GC053208X02
0.5 to 1.5 PSI / (34 to 103 mbar) GC053215X02
-1.0 to 1.0 in wc / (-2 to 2 mbar) GC053208X02
-5 to -0.5 in wc (VAC) / (-12 to -1,2 mbar) GC053208X02
14* O-Ring
Nitrile GC070173X02
EPDM/FDA GC070173X52
FKM GC070173X12
FFKM GC070173X62
15 Diaphragm Bolt GC053210X02
16* O-Ring (2 required)
Nitrile 1F115306992
EPDM/FDA 1F1153X0062
FKM 1F1153X0022
FFKM 1F1153X0032
Figure 7. Typical MainValveand Spring(Type ACE95Srshown)
10.Tighten all nuts (key 31) uniformly.
11. Reinstall the valve according to the instructions in
the Installation section of this manual.
11. Adjust the setpoint according to the instructions
in the Adjustment section.
12. Replace the actuator cap (key 1).
Parts Ordering
Each ACE95 Series valve is assigned a serial number
printed on the nameplate on the main valve actuator.
Refer to this number when contacting your Fisher Sales
Office or Fisher Sales Representative for assistance, or
whenorderingreplacementparts.When orderinga
replacement part, be sure to reference the key number
for each needed part and include the complete 11-
character part number from the following parts list.
Key Description Part Number
1Cap
Stainless Steel GC053301X02
Steel GC053301X32
2 Adjusting Screw
0.5 to 5 in wc / (1,2 to 12 mbar) GC060216X12
4 to 10 in wc / (10 to 25 mbar) GC060216X12
8 to 15 in wc / (20 to 36 mbar) GC060216X12
0.5 to 1.5 psi / (34 to 103 mbar) GC060221X12
-1.0 to 1.0 in wc / (-2 to 2 mbar) GC060216X12
-5 to -0.5 in wc (vac) / (-12 to 1,2 mbar) GC060216X12
PLUG
(KEY 22)
SCREW
(KEY 20)
SPRING (MAINVALVE)
(KEY 26) O-RING (KEY 23)
PISTON (MAIN)
(KEY 25)
O-RING
(KEY 24)
LOCKWASHER
(KEY 21)
W8160
* Recommended Spare Part

ACE95 Series
13
Key Description Part Number
17 Bonnet
Cv 1 through 4 GC052901X02
Cv 5 through 10 GC052901X12
Cv 20 through 60 GC050919X62
18 Body
Cv 1 through 4 GC052902X02
Cv 5 through 10 GC052902X12
Cv 20 through 60 GC050927X62
19* O-Ring
Type ACE95
Nitrile 1C415706992
EPDM/FDA 1C4157X0092
FKM 1C4157X0032
FFKM 1C4157X0082
Type ACE95Sr
Nitrile 1F3581X0082
EPDM/FDA 1F3581X0102
FKM 1F3581X0022
FFKM 1F3581X0092
20 Round-Head Machine Screw
Type ACE95 GC060218X02
Type ACE95Sr GC060225X02
21 Lock Washer
Type ACE95 GC060903X02
Type ACE95Sr GC060906X02
22 Plug
Type ACE95
Cv 1 GC050206X02
Cv 2 GC053205X02
Cv 4 GC053204X02
Cv 7.5 GC053213X02
Cv 10 GC053212X02
Type ACE95Sr
Cv 20 GC053220X02
Cv 45 GC053221X02
Cv 60 GC053218X02
23* O-Ring
Type ACE95, Cv 1 through 4
Nitrile 1D2888X0032
EPDM/FDA 1D2888X0042
FKM 1D2888X0052
FFKM 1D2888X0022
Type ACE95, Cv 5 through 10
Nitrile 18A1088X022
EPDM/FDA 18A1088X042
FKM 18A1088X052
FFKM 18A1088X032
Type ACE95Sr Cv 20 through 60
Nitrile 1C782206992
EPDM/FDA 1C7822X0122
FKM 1C7822X0132
FFKM 1C7822X0112
Key Description Part Number
24* O-Ring
Type ACE95 Cv 1 through 4
Nitrile 1C782206992
EPDM/FDA 1C7822X0122
FKM 1C7822X0132
FFKM 1C7822X0112
Type ACE95 Cv 5 through 10
Nitrile 1D2375X0062
EPDM/FDA 1D2375X0082
FKM 1D237506382
FFKM 1D237506372
Type ACE95Sr Cv 20 through 60
Nitrile 1D785306992
EPDM/FDA 1D7853X0032
FKM 1D7853X0042
FFKM 1D7853X0012
25 Piston (main valve)
Type ACE95: Cv 1 through 4 GC053203X02
Type ACE95: Cv 7.5 through 10 GC053219X02
Type ACE95Sr: Cv 20 through 60 GC053211X02
26 Spring (main valve)
Type ACE95
Cv 1 through 4, 25 to 50 psig GC220704X22
Cv 1 through 4, 51 to 120 psig GC220705X22
Cv 1 through 4, 121 to 200 psig GC220706X22
Cv 5 through 10, 25 to 50 psig GC220705X22
Cv 5 through 10, 51 to 120 psig GC220706X22
Cv 5 through 10, 121 to 200 psig GC220709X22
Type ACE95Sr
Cv 20 through 60, 25 to 50 psig GC220714X22
Cv 20 through 60, 51 to 120 psig GC220712X22
Cv 20 through 60, 121 to 200 psig GC220713X22
27* Gasket (bonnet/actuator) GC070429X32
28 Lock Washer (24 required) GC060906X02
29 Hex-Head Machine Screw
Type ACE95 (24 required) GC060220X02
Type ACE95Sr (28 required) GC060220X02
30 Actuator Case (lower)
Stainless Steel GC260105X02
Steel GC260105X32
31 Hex Nut (20 required) GC060316X02
32 Hex-Head Machine Screw (24 required) GC060220X02
33 Actuator Case (upper)
Stainless Steel GC260102X02
Steel GC260102X12
34 Spring Shim (Type ACE95 only)
25 to 50 psig (1,7 to 3,5 mbar) GC053209X02
35 Lower Cage GC053002X02
36 Spring (cage) GC220707X22
37 Piston (pilot) GC053202X02
* Recommended Spare Part

ACE95 Series
14
* Recommended Spare Part
Key Description Part Number
38* Rolling Diaphragm
Nitrile GC071101X02
EPDM/FDA GC071101X22
FKM GC071101X12
FFKM GC071101X32
39* O-ring
Nitrile 1D2888X0032
EPDM/FDA 1D2888X0042
FKM 1D2888X0052
FFKM 1D2888X0022
40 Cage (upper) GC053001X02
41* O-Ring
Nitrile 10A0042X052
EPDM/FDA 10A0042X072
FKM 10A0042X012
FFKM 10A0042X062
42 Pilot (poppet) GC053201X02
43 Pilot Filter (optional, not shown)
Aluminum GC040701X02
Stainless Steel GC040708X02
46 Seal Bushing (4 required, Type ACE95 only)
Nitrile GC071202X32
EPDM/FDA GC071202X32
FKM GC071202X32
FFKM GC071202X32
47 Flat Washer
(20 required, steel actuator only) GC060804X22
48 Diaphragm Plate (lower)
Positive Spring Range
(3 inch / 76 mm - diameter) GC260113X02
Negative Spring Range
(9 inch / 229 mm - diameter) GC260104X02
49 Spring Guide (Type ACE95Sr only)
25 to 50 psig / 51 to 120 psig GC050505X22
50 Hex Head Cap Screw (4 required) GC060224X02
51 Lock Washer (4 required) GC060905X02
162 Lower Range Spring
(neg. pressure range only, used with upper spring (key 8))
-1.0 to 1.0 in wc / (-2 to 2 mbar) GC220717X22
-5 to -0.5 in wc (vac) / (-12 to -1,2 mbar) GC220710X22

ACE95 Series
15
Figure8.Type ACE95SrTank BlanketingValve
1
2
3
4
5
6
7
8
9
10 11 12
13
14
17
18
50 51
15
16
19
40
28
35
32
31
47
36
29
30 28
26
49
22
23
24
2120
27
42
39
38
33
41
32
37
25
162
48
LOCATE GROOVE IN LOWER
CAGE FOR ROLLING
DIAPHRAGM BEAD
E0625
E0626
LOCATE
GROOVE IN
LOWER CAGE
FOR ROLLING
DIAPHRAGM
BEAD

©Fisher Controls International, Inc., 2001; All Rights Reserved
Fisher and Fisher-Rosemount are marks owned by Fisher Controls International, Inc. or Fisher-Rosemount Systems, Inc.
All other marks are the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express
or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.
For information, contact Fisher Controls:
Marshalltown, Iowa 50158 USA
28320 Gallardon, France
Sao Paulo 05424 Brazil
Singapore 128461
PrintedinU.S.A.
ACE95 Series
Figure9.Type ACE95TankBlanketingValve
1
2
3
4
5
7
8
9
10 11 12
6
17
18
13
19
20
14
21
15
16
42 41
40
39
37
38
36
35
26
22
23
24
25
30
27
28
29
2831
3332
28 32
46 48
162
34
LOCATE GROOVE IN LOWER
CAGE FOR ROLLING
DIAPHRAGM BEAD
E0627
E0628
47
LOCATE
GROOVE IN
LOWER CAGE
FOR ROLLING
DIAPHRAGM
BEAD