Asco 8317 Series Installation and operating instructions

Page 1 of 2
50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
MCMXCIII All Rights Reserved. Printed in U.S.A.
Installation & Maintenance Instructions SERIES
Form No.V6860R1
-WAY DIRECT-ACTING QUICK EXHAUST SOLENOID VALVES 8 17
UNIVERSAL OPERATION - BRASS OR STAINLESS STEEL CONSTRUCTION
1/4 NPT - AIR OR INERT GAS SERVICE
IMPORTANT: See separate solenoid installation and maintenance
instructions for information on: Wiring, Solenoid Temperature,
Causes of Improper Operation, Coil, or Solenoid Replacement.
ESCRIPTION
Series 8317 valves are 3-way direct-acting with quick exhaust
solenoid valves designed for air or inert gas service. Valve bodies are
ade of rugged brass or stainless steel. The valves ay be provided
with a low power or intrinsically safe solenoid.
OPERATION
Universal Pressure at 2 (Normally Closed Operation)
Solenoid e-energized: Pressure at 2 is closed, flow is fro cylinder
1 to ain exhaust 4. Pilot exhaust 3 is open.
Solenoid Energized: Flow is fro pressure 2 to cylinder 1. Main
exhaust 4 and pilot exhaust 3 are closed.
Universal Pressure at 3 (Normally Open Operation)
Solenoid e-energized: Flow is is fro pressure 3 cylinder 1. Main
exhaust 4 and pilot exhaust 2 are closed.
Solenoid Energized: Pressure at 3 is closed, flow is fro cylinder 1 to
ain exhaust 4. Pilot exhaust 2 is open.
Note: This construction is interchangeable fro Pressure at 2 to
Pressure at 3 (or vice versa) by changing the piping.
IMPORTANT: Minimum operating pressure differential 5 psi.
Flow iagrams
Universal - Pressure at 2
De-energized
Universal - Pressure at 3
Energized
De-energized
Energized
12
3
4
3
33
1
11
2
22
4
44
Main
Exh. Pilot
Exh.
INSTALLATION
Check na eplate for correct catalog nu ber, pressure, voltage,
frequency, and service. Never apply inco patible fluids or exceed
pressure rating of the valve. Installation and valve aintenance to be
perfor ed by qualified personnel.
Temperature Limitations
Fluid and a bient te perature range: -4 F to +140F.
Future Service Considerations
Provision should be ade for perfor ing seat leakage, external
leakage, and operational tests on the valve with a nonhazardous,
nonco bustible fluid after disasse bly and reasse bly.
Positioning Valve ay be ounted in any position.
Mounting For ounting valve body refer to Figure 1.
.750
1
1.500
38
.200
5
Figure 1. Dimensions for mounting valve body.
Piping
There are two exhaust flows in the exhaust ode. The pilot exhaust
ay be connected to the ain exhaust if the air or inert gas cannot be
exhausted directly to the at osphere. For universal valves with
pressure at 2 (nor ally closed operation) the pilot exhaust is at 3 and
ay be connected to ain exhaust 4. For universal valves with
pressure at 3 (nor ally open operation) the pilot exhaust is at 2 and
ay be connected to ain exhaust 4. Connect piping or tubing to
valve according to arkings on valve body. Refer to flow diagra s in
OPERATION section.
CAUTION: To avoid damage or accidental disengagement of
cartridge assembly from valve body, hold cartridge assembly
securely by wrenching flats when installing or removing piping at
Port 3.
Apply pipe co pound sparingly to ale pipe threads only. If applied
to valve threads, the co pound ay 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.
To insure proper operation of the valve, the pressure and exhaust lines
ust be full area without restriction. A ini u differential
pressure (5 psi), as sta ped on the na eplate, ust be aintained
between pressure and exhaust at the o ent of shifting. Air
reservoirs ust have adequate capacity to aintain this ini u
pressure during shifting. To check pressure during shifting, install a
pressure gauge in the pressure piping as close to the valve as possible.
IMPORTANT: These solenoid valves are intended for use on clean
dry air or inert gas, filtered to 50 micrometres or better. The dew
point of the media should be at least 10 C (18 F) below the
minimum temperature to which any portion of the clean air/inert
gas system could be exposed to prevent freezing. If lubricated air is
used, the lubricants must be compatible with Buna N elastomers.
iester oils may cause operational problems. Instrument air in
compliance with ANSI/ISA Standard S7.3-1975 (R1981) exceeds
the above requirements and is, therefore, an acceptable media for
these valves.

50-60 Hanover Road, Florham Park, New Jersey 07 32
ASCO Valves
Page 2 of 2 Form No.V6860R1
Flow Controls (Speed or Metering Devices)
Flow control valves ay be added to control cylinder speed. If used,
these flow control valves ust be located in cylinder piping between
the solenoid valve and the cylinder.
IMPORTANT: o not install flow controls (speed or metering
devices) or any type of restrictive device in either the pressure
(inlet) or the main exhaust or pilot exhaust (outlet) ports of the
valve. Restricting either of these lines may cause valve malfunction.
MAINTENANCE
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 re ove the valve body fro the pipeline for
repairs. However, piping or tubing ust be re oved ports 3 and 4.
Cleaning
All solenoid valves should be cleaned periodically. The ti e between
cleanings will vary depending on the ediu 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 extre e case, faulty valve operation will occur and the valve ay
fail to shift. Clean filter when cleaning the valve.
Preventive Maintenance
Keep the ediu flowing through the valve as free fro dirt and
foreign aterial as possible.
While in service, the valve should be operated at least once a
onth to insure proper opening and closing.
Depending on the ediu and service condition, periodic
inspection of internal valve parts for da age or excessive wear is
reco ended. Thoroughly clean all parts. If parts are worn or
da aged, install a co plete ASCO Rebuild Kit.
Causes of Improper Operation
Incorrect Pressure: Check valve pressure. Pressure to valve ust
be within range specified on na eplate.
Excessive Leakage: Disasse ble valve and install a co plete
ASCO Rebuild Kit.
Valve isassembly Refer to Figure 2.
1. Disasse ble valve in an orderly fashion using exploded view for
identification and place ent of parts.
2. Re ove piping fro ports 3 and 4.
3. Re ove solenoid, see separate instructions.
4. Unscrew cartridge asse bly fro valve body. Then re ove
cartridge gasket and orifice gasket.
5. Unscrew valve seat with seat gasket attached. Then re ove
diaphrag fro valve body cavity.
6. Clean valve and install a co plete ASCO Rebuild Kit.
Valve Reassembly Refer to Figure 2.
1. Lubricate all gaskets with DOW CORNING 111 Co pound
lubricant or an equivalent high-grade silicone grease.
2. Position cartridge gasket in valve body.
3. Install orifice gasket in recess in base of cartridge asse bly.
4. Thread cartridge asse bly with orifice gasket into valve body. Then
torque cartridge asse bly to 175 ± 25 in-lbs [19,8 ± 2,8 N ].
5. Install diaphrag in valve body cavity. Then install seat gasket
and valve seat in valve body. Torque valve seat to 125 ± 20
in-lbs [14,1 ± 2,3 N ].
6. Install solenoid see separate instructions. Then ake up piping
and electrical connection to solenoid.
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.
7. Restore line pressure and electrical power supply to valve.
8. After aintenance is co pleted, operate the valve a few ti es
to be sure of proper operation.
OR ERING INFORMATION
FOR ASCO REBUIL KITS
Parts arked with an asterisk (*) in the exploded view are supplied in
Rebuild Kits. When Ordering Rebuild Kits for ASCO valves, order
the Rebuild Kit nu ber sta ped on the valve na eplate. If the
nu ber of the kit is not visible, order by indicating the nu ber of kits
required, and the Catalog Nu ber and Serial Nu ber of the valve(s)
for which they are intended.
Torque Chart
Part Name Torque Value
In-lbs
Torque Value
Nm
Valve Seat 125 ± 20 14,1 ± 2,3
Cartridge
Assembly 175 ± 25 1 ,8 ± 2,8
cartridge assembly
cartridge gasket
orifice gasket
Indicates parts supplied
in ASCO Rebuild Kit
valve body
1/8 NPT
wrenching flat
(See instructions in
Piping section)
diaphragm
seat gasket
valve seat
Figure 2. Series 8317 without solenoid.