Asco 8210 Series Installation and operating instructions

Page 1 of 4
50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
eMCMXCVIII All Rights Reserved. Printed in U.S.A.
Installation & Maintenance Instructions SERIES
Form No.V5460R4
-WAY INTERNAL PILOTED-OPERATED SOLENOID VALVES 8 10
NORMALLY OPEN OPERATION Ċ GENERAL SERVICE
1I, 1 ¼I OR 1 ½I NPT
8 11
NOTICE: See separate solenoid installation and maintenance
instructions for information on: Wiring, Solenoid Temperature,
Cause of Improper Operation, or Coil Replacement.
DESCRIPTION
Series 8210 valves are 2-way normally open internal
pilot-operated solenoid valves designed for general service.
Valves are made of rugged forged brass. Series 8210 valves are
provided with a general purpose solenoid enclosure.
Series E 8210 and 8211 are the same as Series 8210 except they are
provided with an explosionproof or explosionproof/watertight
solenoid enclosure.
OPER TION
Normally Open: Valve is open when solenoid is de-energized;
closed when energized.
IMPORT NT: Minimum operating pressure differential required
is 5 psi.
Manual Operator (optional feature)
Manual operator allows manual operation when
desired or during an electrical power outage. To
engage manual operator (close the valve) insert
screwdriver and turn stem clockwise until it stops.
Valve will now be in the same position as when the solenoid is
energized. To disengage manual operator (open the valve), turn stem
counterclockwise until it stops.
CAUTION: For valve to operate electrically, manual
operator stem must be fully rotated counterclockwise.
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.
Temperature Limitations
or maximum valve ambient and fluid temperatures, refer to chart
below. Check catalog number prefix and watt rating on nameplate.
Watt
Rating
AC/DC
Catalog
Number
Prefix
Solenoid
Class
Maximum
Ambient
Temp.
Maximum
Fluid
Temp.
1
5
.4
o
r 1
6
.1
None, KF,
SF or SC F125_F (51.7_C)
180_F
(82_C)
15
.
4
or
16
.
1
AC HT, KH, ST
or SU H140_F (60_C)
180_F
(82_C)
16.8
DC None or HT F or H 77_F
(25_C)
180_F
(82_C)
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.
Piping
Connect piping to valve according to markings on valve body. 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 860
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 strainer or filter when cleaning the valve.
Preventive Maintenance
SKeep the medium flowing through the valve as free from dirt and
foreign material as possible.
SWhile in service, the valve should be operated at least once a
month to insure proper opening and closing.
SDepending 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
SIncorrect Pressure: Check valve pressure. Pressure to valve must
be within range specified on nameplate.
SExcessive Leakage: Disassemble valve and clean all parts. If parts
are worn or damaged, install a complete ASCO Rebuild Kit.

50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
Page 2 of 4 Form No. V5460R4
Valve Disassembly
1. Disassemble valve in an orderly fashion using exploded views
for identification and placement of parts. Refer to igure 1 for
1I or 1 ¼IĂNPT valve constructions or optional manual
operator. Refer to igure 2 for 1 ½I NPT valve construction.
2. Remove solenoid enclosure. See separate instructions.
3. Unscrew solenoid base sub-assembly using special wrench
adapter supplied in rebuild kit. or special wrench adapter
only, order ASCO Wrench Kit No. K218950.
4. Remove solenoid base sub-assembly, core, plugnut assembly
and solenoid base gasket.
5. Unscrew adapter from valve body, then remove disc holder
assembly, disc holder spring and bonnet gasket.
6. or normal maintenance (cleaning) it is not necessary to
remove the valve seat. However, for valve seat removal use a
7/16I thin wall socket wrench.
7. Optional Manual Operator - It is not necessary to
disassemble the manual operator unless external leakage is
evident. If disassembly is required, remove retainer using and
a suitable pair of retaining ring pliers. Then remove flat washer
and back out manual operator stem counterclockwise with stem
gasket attached.
8. Remove bonnet screws, valve bonnet, diaphragm spring,
diaphragm assembly, body gasket, body passage eyelet (present
on current valve constructions only) and body passage gasket.
9. All parts are now accessible for cleaning or replacement. If
parts are worn or damaged, install a complete ASCO Rebuild
Kit.
- Service Notice -
When installing a new SCO Rebuild Kit, the parts supplied are
shown in Figures 1 and 2. The parts supplied are new, improved and
a direct replacement for the present parts providing all new parts
are installed.
CAUTION: To ensure proper valve operation, install all
parts supplied in ASCO Rebuild Kit. Do not mix old and new
parts.
Valve Reassembly
1. Lubricate body gasket, body passage gasket, bonnet gasket and
solenoid base gasket with DOW CORNINGr 200 luid
lubricant or an equivalent high-grade silicone fluid.
2. Optional Manual Operator - Lubricate stem gasket with
DOW CORNINGr 111 Compound lubricant or an equivalent
high-grade silicone grease.
3. Install body passage gasket, body passage eyelet, diaphragm
assembly, diaphragm spring, valve bonnet and bonnet screws.
Hand thread screws as far as possible. Then torque bonnet
screws in a crisscross manner to 144 ± 15 in-lbs [16,3 ± 1,7
Nm].
4. If removed, install valve seat in valve body. Apply a small
amount of thread compound compatible with valve media to
valve seat threads. Torque valve seat to 75 ± 10 in-lbs
[8,5 ± 1,1 Nm].
5. Install bonnet gasket, disc holder spring, disc holder assembly
and adapter in valve body. Torque adapter to 175 ± 25 in-lbs
[19,8 ± 2,8 Nm].
6. Replace solenoid base gasket, plugnut assembly, core (small
end up) and solenoid base sub-assembly. Torque solenoid
base sub-assembly to 175 ± 25 in-lbs [19,8 ± 2,8 Nm].
7. Optional Manual Operator - If removed, install stem with
stem gasket clockwise into valve body using a suitable
screwdriver. Reinstall flat washer and retainer. Then turn
manual operator stem counterclockwise until it stops. This is
the position for electrical operation.
8. Install solenoid. See separate instructions.
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.
9. Restore line pressure and electrical power supply to valve.
10. After maintenance is completed, operate the valve a few times
to be sure of proper operation. A metallic click indicates 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.
Torque Chart
Part Name Torque Value
Inch-Pounds
Torque Value
Newton-Meters
Solenoid base
sub-assembly 175 ± 25 1 ,8 ± 2,8
Adapter
175
±
25
1 ,8
±
2,8
Bonnet screws 144 ± 15 16,3 ± 1,7
Valve seat 75 ± 10 8,5 ± 1,1

50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
Page 3 of 4Form No.V5460R4
Figure 1. Series 8210 valve without solenoid, 1I or 1 ¼I NPT valve with manual operator shown.
body passage gasket
body gasket
diaphragm assembly
diaphragm spring
valve bonnet
valve body
bonnet screw (4)
solenoid base
sub-assembly
core (small end up)
plugnut assembly
solenoid base gasket
adapter
disc holder assembly
disc holder spring
bonnet gasket
valve seat
stem retainer
stem washer
manual operator
stem gasket
stem
Indicates Parts Supplied
In ASCO Rebuild Kits
MANUAL OPERATOR
(OPTIONAL)
Special wrench adapter
for solenoid base
sub-assembly
(order Kit No. K218 50)
IMPORTANT
See torque
chart
body passage eyelet

50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
Page 4 of 4 Form No. V5460R4
Figure 2. Series 8210 valve without solenoid, 1 ½I NPT valve shown.
body passage gasket
diaphragm assembly
diaphragm spring
valve bonnet
valve body
bonnet screw (6)
eyelet
solenoid base
sub-assembly
core (small end up)
plugnut assembly
solenoid base gasket
adapter
disc holder assembly
disc holder spring
bonnet gasket
valve seat
body gasket
Indicates Parts Supplied
In ASCO Rebuild Kits
Special wrench adapter
for solenoid base
sub-assembly
(order Kit No. K218 50)
IMPORTANT
See torque
chart