I&M V_5455_R8
Installation & Maintenance Instructions
SERIES
8210
8211
2-WAY INTERNAL PILOTED-OPERATED SOLENOID VALVES
BRASS AND STAINLESS STEEL CONSTRUCTION
NORMALLY CLOSED OPERATION — 1”,1 1/4” & 1 1/2” NPT
NOTICE: See separate solenoid installation and maintenance
instructions for information on: Wiring, Solenoid Temperature,
Cause of Improper Operation, Coil or Solenoid Replacement.
DESCRIPTION
Series 8210 valves are 2-way normally closed internal pilot-operated
solenoid valves designed for general service. Valves are made of rugged
forged brass or stainless steel. Series 8210 valves are provided with a
general purpose solenoid enclosure.
Series EF8210 and 8211 are the same as Series 8210 except they are
provided with an explosionproof or explosionproof/watertight solenoid
enclosure.
NOTICE: Brass valves are not certified as lead-free under the Safe
Water Drinking Act SWDA 1417 and are not intended for use on
drinking water systems. They are intended for control of water in
industrial applications. Consult ASCO for valves rated for use in
potable water applications.
OPERATION
Normally Closed: Valve is closed when solenoid is de-energized; open
when energized.
NOTE: No minimum operating pressure differential required.
Positioning
AC Construction (Alternating Current):Valve is designed to perform
properly when mounted in any position. However, for optimum life and
performance, the solenoid should be mounted vertical and upright so as
to reduce the possibility of foreign matter accumulating in the solenoid
base sub-assembly area.
DC Construction (Direct Current): Valve must be mounted with
solenoid vertical and upright.
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 and 8601 for
strainers.
MAINTENANCE
Manual Operator (optional feature)
Manual operator allows manual operation when desired or during an
electrical power outage. To engage manual operator (open the valve),
remove operator cap and gasket base of valve. Turn manual operator stem
clockwise as far as possible. Do not force operator stem. Valve will then
be in the same position as when the solenoid is energized. To disengage
manual operator, turn stem counterclockwise as far as possible.
CAUTION: Stem must be fully retracted counterclockwise
before operating valve electrically.
Replace manual operator cap gasket and cap.
WARNING: To prevent the possibility of death,
serious 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
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.
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.
Future Service Considerations
Preventive Maintenance
INSTALLATION
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
For maximum valve ambient and fluid temperatures, refer to chart below.
Check catalog number prefix and watt rating on nameplate.
Watt
Rating
AC/DC
15.1 & 16.1
AC
30.6
DC
30.8
DC
Catalog
Number
Prefix
Coil
Class
Max. Ambient
Temp.
Max. Fluid
Temp.
•
•
•
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
None, KF,
SF or SC
F
125 °F (51.7 °C)
180 °F (82 °C)
•
Incorrect Pressure: Check valve pressure. Pressure to valve
must be within range specified on nameplate.
HT, KH,
ST or SU
H
140 °F (60 °C)
180 °F (82 °C)
•
Excessive Leakage: Disassemble valve and clean all parts. If
parts are worn or damaged, install a complete ASCO Rebuild Kit.
HT
H
104 °F (40 °C)
77 °F (25 °C)
None
F
HB
H
104 °F
(40 °C)
ASCO Valves®
180 °F
(82 °C)
I&M V_5455_R8
E252556 - 29 April 2015 6:13 PM
All Rights Reserved.
ASCO Valve, Inc. 50 Hanover Road, Florham Park, New Jersey 07932
www.ascovalve.com
©
Page 1 of 4
Valve Disassembly
1. Disassemble valve in an orderly fashion using exploded views for
identification and placement of parts. Refer to Figure 2 for AC and DC
Rev. G constructions; Figure 3 for DC Rev. B and D constructions.
2. Remove solenoid enclosure. See separate instructions.
3. Unscrew solenoid base sub-assembly. For DC Rev. B and D
constructions, a special wrench is supplied in ASCO Rebuild Kit. For
wrench only, Order ASCO Wrench Kit No. K168146-001.
4. Remove bonnet screws, valve bonnet, bonnet gasket, spring retainer
(AC and DC Rev. G constructions) core spring, core/diaphragm subassembly and body gasket.
5. For valves equipped with a manual operator, remove cap, cap gasket,
bonnet and bonnet gasket. Remove stem assembly with stem gasket
from bonnet.
6. All parts are now accessible for cleaning or replacement. If parts are
worn or damaged, install a complete ASCO Rebuild Kit.
ORDERING INFORMATION
FOR ASCO 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
Manual
operator bonnet
75 ± 10
Torque Value
Newton-Meters
8,5 ± 1,1
Valve Reassembly
1. Lubricate all gaskets and the disc at the base oft he core /diaphragm
sub-assembly with DOW CORNING 111® Compound lubricant or an
equivalent high-grade silicone grease.
2. Replace body gasket and core/diaphragm sub-assembly. Locate bleed
hole in core/diaphragm sub-assembly directly over valve outlet. For
1 1/2” NPT construction, locate bleed hole in core/diaphragm subassembly approximately 30° from valve outlet.
3. Replace core spring and spring retainer (AC and DC Rev. G
constructions). Install small end of core spring in core first, wide end
protruding from top of core. For DC Rev. B and D constructions,
install core spring, small end down toward valve body.
4. Replace valve bonnet and bonnet screws. Hand tighten bonnet
screws as far as possible.
Indicates Parts Supplied
In ASCO Rebuild Kits
valve
body
IMPORTANT: Press firmly down on core/diaphragm sub-assembly
to seat diaphragm assembly against valve seat. While holding this
position, torque bonnet screws in a crisscross manner to 144 ± 15 inlbs [16,3±1,7 Nm].
5. Replace bonnet gasket and solenoid base sub-assembly. Torque
solenoid base sub-assembly to 175 ± 25 in-lbs [19,8 ± 2,8 Nm]. For
DC Rev. B and D constructions, the solenoid base sub-assembly must
be placed inside the housing before assembling into the valve body.
Before doing this, read separate lubrication instructions in Solenoid
Installation & Maintenance Instructions.
6. For valves provided with a manual operator, replace stem assembly
and bonnet (with gaskets). Torque bonnet to 75 ± 10 in-lbs [8,5 ± 1,1
Nm]. Replace cap gasket and cap.
7. Install solenoid. See separate instructions.
bonnet
gasket
stem
gasket
stem
assembly
bonnet
WARNING: To prevent the possibility of death,
serious 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.
cap
gasket
cap
8. Restore line pressure and electrical power supply to valve.
9. After maintenance is completed, operate the valve a few times to be
sure of proper operation. A metallic clicks signifies the solenoid is
operating.
Figure 1. Manual operator (optional feature)
Page 2 of 4
©
ASCO Valve, Inc. 50 Hanover Road, Florham Park, New Jersey 07932
I&M No. V_5455_R8
www.ascovalve.com
Torque Chart
Part Name
Torque Value Inch-Pounds
Solenoid base sub-assembly
Bonnet screw
Torque Value Newton-Meters
175 ± 25
19,8 ± 2,8
144 ± 15
16,3 ± 1,7
solenoid base
sub-assembly
bonnet gasket
bonnet screw (4)
valve bonnet
Locate bleed hole in
core/diaphragm sub-assembly
directly over outlet. For 1 1/2”
NPT construction locate bleed
hole 30° from valve outlet.
bleed hole
spring retainer
core spring
(small end in core first, wide
end protrudes from top of core)
sub-assembly
core/diaphragm
body gasket
1” and 1 1/4” NPT brass
construction shown
valve body
Indicates Parts Supplied
In ASCO Rebuild Kits
Figure 2. Series 8210 valve without solenoid
( AC and DC Rev. G constructions )
Page 3 of 4
©
ASCO Valve, Inc. 50 Hanover Road, Florham Park, New Jersey 07932
I&M No. V_5455_R8
www.ascovalve.com
Torque Chart
Part Name
Torque Value Inch-Pounds
Solenoid base sub-assembly
Bonnet screw
Torque Value Newton-Meters
175 ± 25
19,8 ± 2,8
144 ± 15
16,3 ± 1,7
Special wrench supplied
in ASCO Rebuild Kit.
For wrench kit only
order No. K168146-001
solenoid base
sub-assembly
milled flats
for wrenching
housing
wrenching flats
1/2” NPT conduit
connection
bonnet gasket
bonnet screw (4)
valve bonnet
bleed hole
Locate bleed hole in
core/diaphragm sub-assembly
directly over outlet. For 1 1/2”
NPT construction locate bleed
hole 30° from valve outlet.
core/diaphragm
sub-assembly
body gasket
valve body
Indicates Parts Supplied
In ASCO Rebuild Kits
1” and 1 1/4” NPT brass
construction shown
Figure 3. Series 8210 valve without solenoid
(DC Rev. B and D constructions)
Page 4 of 4
©
ASCO Valve, Inc. 50 Hanover Road, Florham Park, New Jersey 07932
I&M No. V_5455_R8
www.ascovalve.com
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