Asco RedHat 8317 Series Installation and operating instructions

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50 Hanover Road, Florham Park, New Jersey 07932 www ascovalve com All Rights Reserved
E176965
Installation & Maintenance Instructions SERIES
I&M No.V7536
8317
3-WAY UICK EXHAUST SOLENOID VALVES
NORMALLY CLOSED AND UNIVERSAL OPERATION
1/4I NPT
IMPORTANT: See separate solenoid installation and
maintenance instructions for information on: Wiring, SoleĆ
noid Temperature, Causes of Improper Operation, and Coil
or Solenoid Replacement
DESCRIPTION
Series 8317 Valves are direct acting, packless, 3-way solenoid valves.
Valve odies are either rass or stainless steel with integral seats. A
core, disc, spring assem ly and diaphragm are the only moving parts.
Valves may e provided with a general purpose/watertight, open-
frame or watertight/explosionproof solenoids.
OPERATION
The solenoid pilots the quick exhaust" diaphragm y using the unĆ
alanced pressure principle. When the pressure orifice is open, the
main and pilot exhaust orifices are closed. When the pressure orifice
is closed, the main and pilot exhaust orifices are open.
Normally Closed:
Solenoid De-energized: Flow is from Cylinder 1" to Main Exhaust
4". Pilot Exhaust is open. Pressure 2" is closed.
Solenoid Energized: Flow is from Pressure 2" to Cylinder 1", Main
Exhaust 4" and Pilot Exhaust 3"are closed.
Universal:
Pressure at 2": Refer to Normally Closed a ove.
Pressure at 3": Refer to Normally Open a ove.
Universal construction is interchangea le with Normally Closed in
the field y merely changing pipe connections.
IMPORTANT: A minimum operating pressure differential
of 5 psi on Air, Gas and Water and 10 psi on Hydraulic oil
(300 S S U ) is required
NORMALLY CLOSED
DE-ENERGIZED ENERGIZED
UNIVERSAL (PRESSURE AT 2") (PRESSURE AT 3")
DE-ENERGIZED ENERGIZED DE-ENERGIZED ENERGIZED
UNIVERSAL
1
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
PRESS PRESS
CYL
1
CYL
PILOT
EXH
PILOT
EXH
MAIN EXH MAIN EXH
1
CYL
1
CYL
1
CYL
1
CYL
PILOT
EXH
PILOT
EXH
PRESS PRESS
MAIN EXH MAIN EXH MAIN EXH MAIN EXH
PILOT
EXH PILOT
EXH
PRESS PRESS
NOTE: Port markings 1, 2, 3 and 4 correspond directly to A, B, C and
C2.
INSTALLATION
Check nameplate and solenoid marking for correct catalog num er,
pressure, voltage, frequency, and service. Never apply incompati le
fluids or exceed pressure rating of the valve. Installation and valve
maintenance to e performed y qualified personnel.
Future Service Considerations
Provision should e made for performing seat leakage, external leakĆ
age, and operational tests on the valve with a nonhazardous,noncomĆ
usti le fluid after disassem ly and reassem ly.
Temperature Limitations
Valves with design change letter K" or P" within the catalog numĆ
er (example: 8317K007) have a maximum fluid temperature of
180F. Refer to separate solenoid Installation and Maintenance InĆ
structions for maximum am ient temperature.
Positioning
This valve is designed to perform properly when mounted in any posiĆ
tion. However, for optimum life and performance, the solenoid
should e mounted vertically and upright to reduce the possi ility of
foreign matter accumulating in the solenoid ase su -assem ly area.
Piping
The pressure and exhaust lines must e connected as indicated in the
flow diagram for the particular application. Full size piping must e
used.
On Normally Closed Valves, the 3" connection is a Pilot Exhaust and
may e connected to a Common Exhaust with the 4" connection.
IMPORTANT: Pilot Exhaust 3" on Normally Closed form
must be connected at the installation into the piping to the
Main Exhaust 4" when controlling fluids such as liquids or
flammable gases that are not permissible to exhaust to atĆ
mosphere
Connect piping to valve according to markings on valve ody. Apply pipe
compound sparingly to male pipe threads only. If applied to valve
threads, the compound may enter the valve and cause operational diffiĆ
culty. Avoid pipe strain y properly supporting and aligning piping.
When tightening the pipe, do not use valve or solenoid as a lever, Locate
wrenches applied to valve ody or piping as close as possi le to conĆ
nection point.
IMPORTANT: To protect the solenoid valve, install a strainĆ
er or filter suitable for the service involved, in the inlet side
as close to the valve as possible Clean periodically dependĆ
ing on service conditions See ASCO Series 8600, 8601 and
8602 for strainers

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Page 2 of 3 I&M No V7536
MAINTENANCE
NOTE: It is not necessary to remove the valve from the pipeline for
repairs.
WARNING: To prevent the possibility of death,
serious injury or property damage, turn off electrical
power, depressurize solenoid operator and/or valve,
and vent fluid to a safe area before servicing.
Cleaning
All solenoid valves should e cleaned periodically. The time etween
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
Keep medium flowing through the valve as free from dirt and
foreign material as possi le.
Periodic exercise of the valve should e considered if am ient or
fluid conditions are such that corrosion, elastomer degradation,
fluid contamination uild up, or other conditions that could
impede solenoid valve shifting are possi le. The actual frequency
of exercise necessary will depend on specific operating conditions.
A successful operating history is the est indication of a proper
interval etween exercise cycles.
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 re uild kit.
Causes of Improper Operation
Incorrect Pressure: Check valve pressure. Pressure to valve must
e within range specified on nameplate.
Excessive Leakage: Disassem le valve and clean all parts. If parts
are worn or damaged, install a complete ASCO Re uild Kit.
Valve Disassembly
1. Disassem le valve using exploded views for identification of parts.
2. Disconnect any tu ing or piping connected to valve.
3. Remove solenoid, see separate instructions.
4. Unscrew solenoid ase su -assem ly. Remove core assem ly
with core spring attached and ody gasket.
5. Remove seat/end plug, end plug gasket and diaphragm.
6. All parts are now accessi le for cleaning or replacement. Clean
all parts and passageways thoroughly efore valve reassem ly.
Replace worn or damaged parts with a complete ASCO ReĆ
uild Kit for est results.
Valve Reassembly
1. Reassem le parts in reverse order of disassem ly. Use exĆ
ploded views for identification and placement of parts.
2. Lu ricate all gaskets with DOW CORNING111 Compound
lu ricant or an equivalent high-grade silicone grease.
3. Replace the solenoid ase gasket, core assem ly with core
spring attached.
4. Replace solenoid ase su -assem ly and torque to 175 ± 25
in-l s (19,8 ± 2,8 Nm).
5. Install diaphragm, end plug gasket and seat/end plug into valve
ody into valve ody,
6. Torque seat/end plug to 125 ± 20 in-l s (14,1 ± 2,3 Nm).
7. Install solenoid, see separate instructions, and make electrical
hookup.
8. Restore line pressure and electrical power supply to valve.
9. After maintenance is completed, operate the valve a few times
to e sure of proper operation.
10. After maintenance is completed, operate valve a few times to e
sure of proper operation. A metallic click signifies the solenoid
is operating.
ORDERING INFORMATION
FOR ASCO REBUILD KITS
Parts marked with an asterisk (*) in the exploded view are supplied in
Re uild Kits. When Ordering Re uild Kits for ASCO valves, order
the Re uild Kit num er stamped on the valve nameplate. If the
num er of the kit is not visi le, order y indicating the num er of kits
required, and the Catalog Num er and Serial Num er of the valve(s)
for which they are intended.

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Page 3 of 3I&M No V7536
Torque Chart
Part Name Torque Value Inch-Pounds Torque Value Newton-Meters
solenoid base sub-assembly 175 ± 25 19,8 ± 2,8
seat/end plug 125 ± 20 14,1 ± 2,3
solenoid base
sub-assembly
bonnet gasket
Indicates Parts Supplied
In ASCO Rebuild Kits
core assembly
core spring
valve body diaphragm
end plug gasket
seat/end plug
Figure 1 Series 8317