Asco 8222 Series Installation and operating instructions

Page 1 of 4
50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
MCMXCV All Rights Reserved. Printed in U.S.A.
Installation & Maintenance Instructions SERIES
Form No.V5452R3
2 WAY INTERNAL PILOT OPERATED SOLENOID VALVES 8222
NORMALLY CLOSED OPERATION Ċ STEAM SERVICE
3/8, 1/2 OR 3/4 NPT
NOTICE: See separate solenoid installation and
maintenance instructions for information on: Wiring,
Solenoid Temperature, Cause of Improper Operation and
Coil Replacement.
DESCRIPTION
Series 8222 valves are 2-way normally closed, internal
pilot-operated solenoid valves designed for steam service.
Valves are made of rugged brass or stainless steel with
internal parts of stainless steel and elastomers of ethylene
propylene. Series 8222 valves may be provided with a
general purpose or explosionproof solenoid enclosure.
OPER TION
Normally Closed: Valve is closed when solenoid is
de- energized open when energized.
NOTE: No minimum operating pressure differential
required.
Manual Operator (optional feature)
Manual operator allows manual operation when desired or
during an electrical power outage. To engage manual
operator (open the valve), turn stem clockwise until it hits
a stop. Valve will now be in the same position as when the
solenoid is energized. To disengage manual operator (close
the valve), turn stem counterclockwise until it hits a stop.
CAUTION: For valve to operate electrically, manual
operator stem must be fully rotated counterclockwise.
Relocation of Manual Operator
WARNING: To prevent the possibility of
personal injury or property damage, turn off
electrical power, depressurize valve, and
vent fluid to a safe area before relocating
manual operator.
Manual operator may be relocated at 90 increments by
rotating the valve bonnet as follows:
1. See separate solenoid installation and maintenance
instruction's and follow instructions to loosen solenoid
to allow rotation of enclosure.
2. Be sure manual operator stem is counterclockwise.
3. Remove bonnet screws from valve body.
4. Lift valve bonnet slightly and rotate to desired position.
Do not rotate the diaphragm assembly with the valve
bonnet.
5. Replace bonnet screws and torque in a crisscross
manner to 50 ± 5 in-lbs [5,7 ± 0,6 Nm].
6. Position and tighten solenoid in place, see separate
instructions.
WARNING: To prevent the possibility of
personal injury or property damage, check
valve for proper operation before returning to
service.
7. Test operate valve electrically and manually. Be sure
valve can be test operated without effecting other
equipment.
8. Restore line pressure and electrical power supply to
valve.
INST LL TION
Check nameplate for correct catalog number, pressure,
voltage, frequency, and service. Never apply incompatible
fluids or exceed pressure rating of the valve. Installation and
valve maintenance to be performed by qualified personnel.
Future Service Considerations
Provision should be made for performing seat leakage,
external leakage, and operational tests on the valve with a
nonhazardous, noncombustible fluid after disassembly and
reassembly.
IMPORT NT: Maximum operating pressure differentials
are based on temperature-related material limitations.
Therefore, do not use valves with a steam source of higher
pressure than the nameplate maximum operating pressure
differential. lso do not use a pressure reducing valve to
reduce steam source to rated pressure because this would
result in superheated steam of excessive temperature
entering the valve.
Temperature Limitations nd Pressure Ratings
For maximum valve ambient and fluid temperatures, refer
to chart below.
Maximum Pressure
Rating psi & service
(Maximum Operating
Pressure Differential)
Coil
Class
Max.
Ambient
Temp.F
Max.
Fluid
Temp.F
50 steam
F
or
H
77 300
Positioning
This valve is designed to perform properly when mounted in
any position. However, for optimum life and performance,
the solenoid should be mounted vertically and upright to
reduce the possibility of foreign matter accumulating in the
solenoid base sub-assembly area.
Mounting
For mounting bracket (optional feature) dimensions, refer
to Figure 1.

50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
Page 2 of 4 Form No.V5452R3
Piping
Connect piping or tubing to valve according to markings on
valve body.
CAUTION: This valve is equipped with ethylene
propylene elastomers which can be attacked by oils
and greases. Wipe the pipe threads clean of cutting
oils.
Apply pipe compound sparingly to male pipe threads only.
If applied to valve threads, the compound may enter the
valve and cause operational difficulty. Avoid pipe strain by
properly supporting and aligning piping. When tightening
the pipe, do not use valve or solenoid as a lever. Locate
wrenches applied to valve body or piping as close as possible
to connection point.
CAUTION: To protect the solenoid valve, install a
strainer or filter, suitable for the service involved, in the
inlet side as close to the valve as possible. Clean
periodically depending on service conditions. See
ASCO Series 8600, 8601 and 8602 for strainers.
M INTEN NCE
WARNING: To prevent the possibility of
personal injury or property damage, turn off
electrical power, depressurize valve, and
vent fluid to a safe area before servicing the
valve.
NOTE: It is not necessary to remove the valve from the
pipeline for repairs.
Cleaning
All solenoid valves should be cleaned periodically. The time
between cleanings will vary depending on the medium and
service conditions. In general, if the voltage to the coil is
correct, sluggish valve operation, excessive noise or leakage
will indicate that cleaning is required. In the extreme case,
faulty valve operation will occur and the valve may fail to
open or close. Clean valve strainer or filter when cleaning
the valve.
Preventive Maintenance
Keep the medium flowing through the valve as free from
dirt and foreign material as possible.
While in service, the valve should be operated at least
once a month to insure proper opening and closing.
Depending on the medium and service conditions,
periodic inspection of internal valve parts for damage or
excessive wear is recommended. Thoroughly clean all
parts. If parts are worn or damaged, install a complete
ASCO Rebuild Kit.
Causes Of Improper Operation
Incorrect Pressure: Check valve pressure. Pressure to
valve must be within range specified on nameplate.
Excessive Leakage: Disassemble valve and clean all parts.
If parts are worn or damaged, install a complete ASCO
Rebuild Kit.
Valve Disassembly
1. Disassemble valve in an orderly fashion. Use exploded
views for identification and placement of parts.
2. Remove solenoid, see separate instructions.
3. Unscrew solenoid base sub-assembly and remove core
spring from top of core assembly.
4. For valves made of stainless steel (Figure 2) with a
manual operator, unscrew manual operator body. Then
remove bonnet gasket, stem retainer, stem assembly
and stem gasket.
5. For valves made of brass (Figure 3) with a manual
operator, it is not necessary to disassemble manual
operator for normal maintenance (cleaning). However,
if a rebuild kit is being installed, remove stem pin,
manual operator stem, stem spring, and stem gaskets.
6. Remove bonnet screws, valve bonnet, core/diaphragm
sub-assembly and body gasket.
7. All parts are now accessible for cleaning or
replacement. If parts are worn or damaged, install a
complete ASCO Rebuild Kit.
Valve Reassembly
1. Reassemble valve using exploded views for
identification and placement of parts.
2. Lubricate all gaskets with DOW CORNINGĂ 111
Compound lubricant or an equivalent high-grade
silicone grease.
3. Position body gasket and core/diaphragm
sub-assembly in valve body. Locate bleed hole in
core/diaphragm sub-assembly approximately 45 from
valve outlet.
4. Install core spring in top of core assembly. Wide end of
core spring in core first closed end protrudes from top
of core.
5. Replace valve bonnet and bonnet screws on valve body.
Torque bonnet screws in a crisscross manner to 50 ± 5
in-lbs [5,7 ± 0,6 Nm].
6. For valves of stainless steel construction (Figure 2) with
a manual operator proceed as follows:
A. Install stem gasket on stem assembly and into
manual operator body.
B. Position stem retainer on manual operator body. Be
sure captive spacer on stem assembly is on the
Outside of the stem retainer.
C. Install bonnet gasket and manual operator body.
Then torque manual operator body to 175 ± 25
in-lbs [19,8 ± 2,8 Nm].
D. After assembly, operate manual operator to be sure
there is no misalignment or binding. If binding
occurs, loosen manual operator body and move stem
retainer slightly clockwise. Re-torque and check for
proper operation. Then rotate manual operator
stem counterclockwise as far as possible.
7. For valves of brass construction (Figure 3) with a
manual operator, proceed as follows:
A. Install outer stem gasket and inner stem gasket on
manual operator stem as shown.

50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
Page 3 of 4Form No.V5452R3
B. Install stem spring, and stem assembly with gaskets
into valve bonnet.
C. Push stem assembly into valve bonnet align stem pin
hole and install stem pin.
D. Operate manual operator to be sure there is no
misalignmentĂĂorĂĂbinding. Then rotate manual
operator stem counterclockwise as far as possible.
8. Replace bonnet gasket and solenoid base
sub-assembly. Torque solenoid base sub-assembly to
175 ± 25 in-lbs [19,8 ± 2,8 Nm].
9. Install solenoid, see separate instructions and make
electrical hookup.
WARNING: To prevent the possibility of
personal injury or property damage, check
valve for proper operation before returning to
service. Also perform internal seat and
external leakage tests with a nonhazardous,
noncombustible fluid.
10. Restore line pressure and electrical power supply to
valve.
11. After maintenance is completed, operate the valve a
few times to be sure of proper operation. A metallic
click signifies the solenoid is operating.
ORDERING INFORM TION
FOR SCO REBUILD KITS
Parts marked with an asterisk (*) in the exploded view are
supplied in Rebuild Kits. When Ordering Rebuild Kits for
ASCO valves, order the Rebuild Kit number stamped on the
valve nameplate. If the number of the kit is not visible, order
by indicating the number of kits required, and the Catalog
Number and Serial Number of the valve(s) for which they
are intended.
bonnet
mounting bracket
screw(4)
solenoid base
sub-assembly
core spring
valve bonnet
body gasket
valve body
bonnet gasket
core/diaphragm
sub-assembly
(closed end of spring
protrudes from top
of core)
Indicates that these
parts are included
in onboard rebuild kit.
Locate bleed hole in
assembly approximately
45 from valve outlet°
Torque solenoid base
sub-assembly to
175 25 in-lbs
bleed hole
1.656
.281 diameter
2 mounting holes
[ 7.1]
[42.1]
[1 ,8 2,8 Nm]
Torque bonnet screws
in a crisscross manner
to 50 5 in-lbs
[5,7 0,6 Nm]
Brass Construction Stainless Steel Construction
Partial view of
mounting bracket
core/diaphragm sub-
two positions
(optional feature)
(optional feature)
Figure 1. Series 8222 Solenoid Valves
±
±
±
±

50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
Page 4 of 4 Form No.V5452R3
body gasket
Indicates that these
parts are included
in onboard rebuild kit.
bonnet screw(4)
core/diaphragm
sub-assembly
Torque bonnet screws
in a crisscross manner
to 50 5 in-lbs
stem retainer
manual operator body
solenoid base
sub-assembly
valve body
valve bonnet
bleed hole
Locate bleed hole in
assembly approximately
45 from valve outlet
°
core spring
(closed end of spring
protrudes from top
of core)
bonnet gasket
core/diaphragm sub-
stem gasket
manual operator
bonnet gasket
Torque solenoid base sub-assembly
and manual operator body
to 175 25 in-lbs [1 ,8 2,8 Nm]
[5,7 0,6 Nm]
stem assembly
solenoid base
sub-assembly
bonnet screw(4)
valve bonnet
bonnet gasket
body gasket
core/diaphragm
sub-assembly
valve body
core spring
(closed end of spring
protrudes from top
of core)
stem pin
manual operator stem
stem spring
Manual operator shown 0 °
inner stem gasket
outer stem gasket
Indicates that these
parts are included
in onboard rebuild kit.
bleed hole
Locate bleed hole in
assembly approximately
45 from valve outlet
°
Torque solenoid base
sub-assembly to
175 25 in-lbs
[1 ,8 2,8 Nm]
Torque bonnet screws
in a crisscross manner
to 50 5 in-lbs
[5,7 0,6 Nm]
É
É
inner stem gasket
outer stem gasket
from true position.
View of manual operator
stem with stem gaskets
Captive spacer on stem assembly
must be on outside of stem
retainer when reassemblied.
core/diaphragm sub-
captive spacer
Figure 2. Series 8222 stainless steel construction with manual operator.
Figure 3. Series 8222 brass construction with manual operator.
±±
±
±
±
±±
±