Cla-Val 584 - Manual

Model
INSTALLATION / OPERATION / MAINTENANCE
Flex-Check Valve
584
INTRODUCTION
The Model 584 Flex-Check Valve™ has been designed to give
years of trouble-free operation. This manual will provide you with
the information needed to properly install and maintain the valve
and to ensure a long service life. The valve is opened by the fluid
flow in one direction and closes automatically to prevent flow in the
reverse direction. An optional return flow actuator may be mount-
ed on the bottom of the valve to allow manual backflow through the
valve in the reverse direction.
The valve is of the flex check type utilizing an angled seat and fully
encapsulated, resilient disc. It is capable of handling a wide range
of fluids including flows containing suspended solids. The size,
flow direction, maximum working pressure, and Model No. are
stamped on the nameplate for reference.
CAUTION: Do not use valve for line testing at pressures high-
er than nameplate rating or damage to valve may occur.
The "maximum working pressure" is the non-shock pressure rating
of the valve at 150˚F. The valve is not intended as an isolation
valve for line testing above the valve rating.
RECEIVING AND STORAGE
Inspect valves upon receipt for damage in shipment. Unload all
valves carefully to the ground without dropping. Do not allow lifting
slings or chains to come in contact with the seat area; use eyebolts
or rods through the flange holes on large valves.
WARNING: Do not use threaded holes in cover for lifting the
valve. Serious injury may result.
Valves should remain crated, clean and dry until installed to pre-
vent weather related damage. For long term storage greater than
six months, the rubber surfaces of the disc should be coated with
a thin film of FDA approved grease such as Lubriko #CW-606. Do
not expose disc to sunlight or ozone for any extended period.
INSTALLATION
Correct installation of the Model 584 Flex-Check Valve™ is impor-
tant for proper operation. It may be installed in horizontal or verti-
cal flow-up applications. When horizontal, however the valve must
be installed with the nameplate facing up and the cover level. In all
installations, the flow arrow cast in the valve cover must be point-
ed in the direction of flow during normal system operation.
WARNING: Do not use threaded holes in cover for lifting the
valve. Serious injury may result.
Flanged valves should only be mated with flat-faced pipe flanges
equipped with full-face resilient gaskets. The valve and adjacent
piping must be supported and aligned to prevent cantilevered
stress on the valve. Once the flange bolts or studs are lubricated
and inserted around the flange, tighten them uniformly hand tight.
The tightening of the bolts should then be done in graduated steps
using the crossover tightening method. Recommended lubricat-
ed torque values for use with resilient gaskets (75 durometer) are
given in Table 1. If leakage occurs, allow gaskets to absorb fluid
and check torque and leakage after 24 hours. Do not exceed bolt
rating or extrude gasket.
CAUTION: The use of ring gaskets or excessive bolt torque
may damage valve flanges.
TABLE 1. FLANGE BOLT TORQUES
MAINTENANCE
The Model 584 Flex-Check Valve™ requires no scheduled lubrica-
tion or maintenance. For service or inspection, the valve can be
serviced without removal from line.
VALVE INSPECTION: If inspection of the valve is required, follow
the Disassembly Instructions.
Body
(Ductile Iron)
Cover Bolt
(Alloy Steel)
Cover
(Ductile Iron)
Disc*
(Steel and Nylon
with Buna-N®)
Cover Seal*
(Buna-N®)
*Recommended Spare Parts
Valve
Size (in)
Bolt
Dia (in)
Recommended
Torque (ft-lbs.)
Max.
Torque (ft-lbs)
3 5/8 25 90
4 5/8 25 90
6 3/4 30 150
8 3/4 40 150
10 7/8 45 205
12 7/8 65 205
14 1 80 300
16 1 80 300
18 1 1/8 100 425
20 1 1/8 100 425
24 1 1/4 150 600