TYPE DSK Special-valve-combinations with flushing device

ARMATUREN
cavity and maintenance free
TYPE “SP”
Plug-Valves with Flushing Device
5.6
maintenance free, self-lubricating
cavity free
easy accessible adjustment of the plug
FIRESAFE design acc. to API 607
face to face dimensions and flanges acc. to DIN und ANSI
“TA - Luft 2002” approval
also with actuators available

Kükenhähne Plug-Valves mit with Spülanschluß
Flushing Device
Type “SP”
hand lever
position indicator
adjusting ring
PTFE - Silk packing (option see leaflet 5.4)
cover
normal operation
diaphragm - sealing set (see leaflet 5.4)
plug
PTFE - slide bearing
PTFE - sleeve
protection inset
flushing operation
flushing valve ”SP”
AZ-plug valves with flushing device for plug bore cross-flushing are preferably used where products tend to deposit
sediments, stick, harden, cristallize or polimerize. E.g. tary products, bitumen, sulfur, VC + VCM, UREA etc.
All these products are inclined to deposit in closed plug passage, which could then lead to a total blockage of the
valves.
These problems can be completely prevented by plug bore cross-flushing with a suitable flushing liquid.
Also, cross-flushing is used to seperate various liquids from each other or to prevent contaminations.
Way of Flushing:
1. Cross-flushing without connection to any side of the main line
(two cross-flushing line connections: 1. intake, 2. outlet).
(picture 1)
2. Cross-flushing with connection to one side of the main line:
only one flushing connection into the straight through plug with
additional bore hole, or in threeway plugs, e,g, plug form “T4”.
(picture 2)
(picture 1)
3. Indirect flushing through flushing connections provided on the
side of the plug (especially for steam flushing at high speed to
prevent damage of the PTFE sleeve).
(picture 3).
4. Special flushing with bouncing plate on counterside etc.
AZ-Plug Valves with flushing device can be supplied in any
design requested: as flanged, threaded, butt weld or socket weld
valves, hand operated as well as with pneumatic or electric
actuator. The entire valve with flushing device can also be
supplied with heating jackets. (see leaflet 1.5).
Order example: A-2-DN50-BW-PN25-1.4408
SP-E-2-DN25-SW-PN25
A = welding end, 2 = twoway, DN50 = size, BW = buttwelding end,
PN25 = rating, 1.4408 = body material,
SP = flushing valve, E = welding end, 2 = two way, DN25 = size,
SW = socketwelding end, PN25 = rating
(picture 2)
(picture 3)

Type “DSK”
Special-Valve-Combinations with Flushing Device
D
L
C
A
E
Flushing / Pressure Expansion
protection inset
flushing
valves
example 1 example 2
Order example: DSK-6”-BW-150-1.4408
SP-E-1/2”-SW-150
DSK = Type “DSK”, 6” = size, BW = buttwelding end, 150 = rating
1.4408 = body material, SP = flushing valve, E = welding end,
1/2” = size, SW = socket welding end, 150 = class
On enquiry / order:
Please state material for
body, plug and jacket.

Type “DBBC”
Double Plug Valve Combination for Pressure Expansion
Type “DBBC”
(Double Block and Bleed Combination)
Through the synchronically operated “L” plug
the medium is closed in between both valves.
Through a flushing resp. pressure expansion
system this “isolated gap” is flushed of the
remaining medium resp. released.
ISO-flange for 180° actuator
gear unit cover
Order example: F-DBBC-DN50-PN25-1.4408
F = flange, DBBC = Type DBBC,
DN50 = size, PN25 = rating,
1.4408 = body material
plug adjustment screw
plug adjustment ring
flushing connection 2x
valve connection pipe
ARMATUREN
totraumfrei und wartungslos
AZ-Armaturen GmbH
D-78087 Mönchweiler
Waldstraße 7
Telefon +49 (0)7721 7504-0
Telefax +49 (0)7721 7504-13
e-mail: info@az-armaturen.de
http://www.az-armaturen.de
5.6.04.03-0-E Subject to technical change without notice