Val-Matic 4-20 Air/Vacuum Valve With Optional Anti-Slam Valve User Manual
Page 6
5
VALVE CONSTRUCTION: The standard valve
body is cast iron with a bronze disc. See
specific Materials List submitted for the order if
other than standard cast iron construction. The
general details of construction are illustrated in
Figure 5. The body (1) is flanged for connection
to the pipeline. See page 2 for installation to the
pipeline.
Figure 5. Anti-Slam Valve
Table 4. Anti-Slam Valve Parts List
MAINTENANCE: The anti-slam valve requires
no scheduled lubrication or maintenance. The
flow characteristics of the valve are adjustable.
If the float in the air valve slams shut due to the
flow of the water, close off some of the tapped
holes of the disc with standard fasteners and
lock washers until the desired characteristic is
achieved.
DISASSEMBLY: The valve can be
disassembled without removing it from the
pipeline. Or for convenience, the valve can be
removed from the line. All work on the valve
should be performed by a skilled mechanic with
proper tools.
1. Close main isolation valve. Drain
air/vacuum valve with drain port.
2. Unbolt air/vacuum valve and remove
from top of anti-slam valve. Replace
gasket if damaged.
3. Remove small seat fasteners on flange
face.
4. Lift seat, disc, and spring from the valve
body. 14” and larger valves do no have
a spring.
5. Clean and inspect parts for wear.
Replace parts if worn or damaged. During
reassembly, tighten flange bolts with the “Max.
Torque” values given in Table 1.
PARTS AND SERVICE
Parts and service are available from your local
representative or the factory. Make note of the
valve Size and Model No. located on the valve
nameplate and contact:
Val-Matic Valve and Mfg. Corp.
905 Riverside Drive
Elmhurst, IL 60126
PH: 630 / 941-7600
FAX: 630 / 941-8042
A sales representative will quote prices for parts
or arrange for service as needed.
Item Description Material
1 Body
Cast
Iron
2 Seat
Bronze
3 Disc
Bronze
4
Spring (4”-12”)*
Stainless Steel
5 Bushing*
Brass
6
Seat Ret. Screw*
Stainless Steel
7 Retainer
Nut*
Brass
*Recommended Spare Part
WARNING:
The valve must be drained
before removing the cover
or pressure may be
released causing injury.