AUTOMATIC VALVE
INDUSTRIAL
www.automaticvalve.com
SERVICE INFORMATION
Pneumatic equipment should be serviced only by persons trained and experienced in pneumatic products.
Turn off the electrical supply to the valve. Shut off and exhaust the air supply.
1. Follow appropriate lock-out/tag-out procedures. Do not attempt to service a valve, if you are not familiar with lock-out/tag-out procedures.
2. Turn off electrical power to the valve.
3. Remove valve from all electrical and air power sources.
4. Ensure all stored air power is exhausted.
5. Remove coil by first removing coil pretention nut.
6. Remove operator cap by first removing 4 socket head cap screws.
7. Remove existing serviceable components by “pushing” internal components gently out of the valve body.
8. Clean the spool with a clean cloth.
9. Discard the spring (Single Spring Return models only).
10. Lubricate the designated
“+”
items in above assembly drawing with a thin film of lubricant - the item should look “WET” with no excess
lubricant visible.
11. Replace components as shown above.
11.1 Replace spring pad (where required) & spring (Single Spring Return Models Only).
11.2 Alternate Tee-seals and spacers.
11.3 Once all 6 Tee-seals are installed, replace the retainer, bushing & piston, and spool.
12. Orientate the operator cap by aligning the open end of the gasket with the pilot hole in the valve body. (For external pilot, this hole is
covered; see Field Conversion on page 3.)
13. Torque cap screws into body to 1,02 N-m (9 in-lbs) ±10%. Alternate tightening of the screws, so cap “squeezes” evenly onto body.
Please read and make sure you understand all instructions before proceeding with the service.
If you have any questions about installation or servicing your product, please contact AUTOMATIC VALVE or your authorized AV
distributor, see contact information listed at the back of this document, or visit www.automaticvalve.com.
SAE 125
Spool Valves – A04 Series
Operating/Service Instructions
Series
Valve Type
Kit Model Number
Contents
Buna-N
Fluoroelastomer
Tee-Seals
Gasket
Piston Seal
Spring
A04
Single
K-A04-SGL
K-A04-SGL-A
6
1
1
1
Double
K-A04-DBL
K-A04-DBL-A
6
1
2
–
Air Line Lubrication
of AUTOMATIC VALVE products is not required, but is recommended to maximize service life. Oils should be
compatible with seal material, have an ISO 32 or lighter viscosity, and have an aniline point between 82
o
C (180
o
F) and 99
o
C (210
o
F).
+
= Items that Must Be Lubricated
You have purchased a premium-quality AV pneumatic valve. It is a high quality SAE spool valve,
designed for ease of installation and maintenance.
With care in its installation and maintenance you can expect it to have a long and economical
service life. Before you service your valve, please read the information in this document completely, and save it for future reference.
A general user manual with more detailed information is available online, visit AV's website at www.automaticvalve.com.
Thank You!
Service Kit Installation Instructions
+ TEE-SEALS (6)
+ PISTON SEAL
SPRING
GASKET
CAP RETAINED WITH
M3 SCREWS
TORQUE 1,2 N-M (9 IN-LBS) ±10%
COIL RETENTION NUT
COIL
SPRING PAD
+ SPOOL
+ TEE-SEALS (6)
+ PISTON SEAL
+ SPOOL
HOUSING GASKET
BODY TO BASE GASKET
CAP SCREW 1/4-20
TORQUE TO 6,7 N-M (59 IN-LBS) ±10%
BODY TO BASE SCREWS 5/16-18
TORQUE TO 13,7 N-M (121 IN-LBS) ±10%
HOUSING SCREWS #10-24
TORQUE TO 42 IN LBS ±10%
SPRING
