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The
angled configuration of the disc and stem of the MINIDISC valve
has been carefully re-engineered into a double-disc, sharing one
stem and controlling two ports.
- TRUE TEE
CONFIGURATION This unique disc design creates a true T configuration
sanitary divert valve. A half turn of the handle causes quick,
positive shut-off in one port and opens the other port completely.
- EASY MAINTENANCE
No more slow, costly rebuilding! Just two low cost seats and two
stem "O" rings are the only parts that will ever need attention.
They can be replaced in a few minutes...in the field!
- SANITARY...OF
COURSE! Like all Lumaco valves. Built to conform to the most
stringent sanitary requirements, entirely of highly polished stainless-steel,
304 or 316 grade. It is flush draining and has no sump. Two leak
detector holes warn operator of faulty stem "O" rings. It meets
all 3A standards and is suitable for all food or sanitary applications.
- DESIGN
BONUS Because it is a disc valve, the DOUBLEDISC offers lower
flow resistance than the standard divert valve. It is hydraulically
balanced and excellent as a regulating valve: the handle remains
in any desired position.
- AUTOMATION
The same double-acting rack and pinion air actuator, time-tested
on the MINIDISC valve is available for the DOUBLEDISC: specify
air-to-air or air-to-spring. A microswitch or microswitch/solenoid
unit in a housing may be ordered as an accessory.
- LEAK DETECTOR
OPTION Another disc and stem is added to control the third
port (Fig. 2). The option is available manual or air actuated
using two actuators to control two stems and three discs.
- COST COMPETITIVE...YES!
Highest quality at a reasonable cost...We wouldn't have it any
other way!
| 2 |
Double
disc and stem |
| 4 |
Stem
"O" Rings: Buna (standard), Viton®, EPDM,
Silicone (on request) (Interchangeable with MINIDISC) |
| 5 |
Seats:
Buna, Silicone, Teflon, Viton® or EPDM (interchangeable
with MINIDISC) |
| 6 |
Ferrule:
Available clamp end: DD-MP or weld end DD-W. |
| 7 |
Clamps:
Standard heavy duty stainless steel clamps, same size as the
pipeline. |
|
mm
|
2"
|
2
1/2"
|
3"
|
| A |
47 |
57 |
64 |
| B |
47 |
57 |
64 |
| C
(DD-MP) |
77 |
87 |
94 |
| C
(DD-W) |
71 |
81 |
88 |
| D |
80 |
100 |
105 |
| E |
174 |
214 |
233 |
SPRING LOADED
EXTRA SECURITY LOCKING HANDLE
|
PARTS
|
| 1 |
Valve
Body |
6 |
Ferrule
adapter |
| 2 |
Disc
& Stem New style |
7 |
Heavy-Duty
Clamp |
| 3 |
Handle
New style |
8 |
Set
Screw LUD 7 disc & stem |
| 4 |
Stem
"O" ring (2) |
9 |
Spring |
| 5 |
Seat |
10 |
Handle
Release Button |
Viton®
is a registered trademark of DuPont Dow Elastomers.
AIR
ACTUATED DOUBLEDISC VALVE
 The
all stainless steel actuator for the DOUBLEDISC® mounts
quickly on the stem housing of the valve. A set screw allows removal
in seconds. The disc stem of the air-actuated valve terminates
in a square shaft. This fits into a brass coupling which, in turn,
connects to the pinion gear. Two brass racks govern the 180°
rotation as the air or springs control the two pistons.
The
actuator is available air-to-open/ air-to-close or air-to-open/
spring-to-close (fail-safe). If the air supply should fail, the
valve can be operated manually by turning the exposed square ended
gear shaft. A double-acting microswitch or microswitch/solenoid
valve, in a housing, is offered as an accessory. It mounts easily
on top of either actuator.
Efficient,
rugged and reliable, the double-acting rack and pinion actuator
is the perfect compliment to the DOUBLEDISC® valve.
Also
Available: Adjustable actuator model.
MICROSWITCH
UNIT
 The
unit can be installed on either actuator. Air-to-Air or Air-to-Spring.
The cam is bolted into the gear shaft and rotates with the disc,
triggering one switch valve when the valve is fully open, the other
when fully closed. ALSO AVAILABLE WITH SOLENOID VALVE.
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