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Diaphragm Valve Type MV 308
Advantages
• externally controlled 2/2-way valve for neutral, ag-
gressive or gaseous liquids
• compact design with high flow efficiency
• all control functions possible by adding or removing
the respective springs
• standard with lift limit and visual position indicator
• insensitive to highly contaminated fluids
Application
• chemical plants
• water treatment
Utilisation
• as shut-off valves as well as for controlling in proc-
ess plants
Type of fluids
• neutral, aggressive liquids or gaseous media even
with abrasive particles provided that the compo-
nents getting in contact with the medium are resist-
ant at operating temperature according to the ASV
resistance guide.
Examinations
• requirements and examinations acc. to DIN 3441,
3442, 8063 and 16 963. DIN EN 12266, leak rate A
examinated.
Nominal pressure (H
• PN 6
Media temperature
• see pressure/temperature diagram
Operating pressure
• see pessure/temperature diagram
Size
• DN 12 and DN 15
330019 – 2001/10/01
O, 20°C)
2
Body
• PVC-U
• PP
• PVDF
Diaphragm
• EPDM
• FPM
• PTFE-vulcanised EPDM-diaphragm on fluid side
Flow (k
-value)
v
• DN 12
3,0 m³/h
• DN 15
3,7 m³/h
Control function
• normally closed (NC)
• normally open (NO)
• double acting (DA)
Control pressure
• max. 7 bar (see page 2)
Connection DN 12
• threaded socket G 3/8"
• socket ends for solvent or fusion welding acc. to DIN
8063 or DIN 16 962
Connection DN 15
• unions acc. DIN 8063 with union socket ends for sol-
vent or fusion welding acc. to DIN 8063 or
DIN 16 962
• dimensions acc. to BS, ANSI and JIS on request
Colour
• body
PVC-U
PP
PVDF
• bonnet
grey, RAL 7011
grey, RAL 7032
opaque, yellowish-white
orange, RAL 2004
1
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Summary of Contents for Stübbe MV 308
- Page 1 Diaphragm Valve Type MV 308 Advantages Body • externally controlled 2/2-way valve for neutral, ag- • PVC-U gressive or gaseous liquids • PP • compact design with high flow efficiency • PVDF • all control functions possible by adding or removing...
- Page 2 Diaphragm Valve MV 308 Pressure/temperature diagram Control curve temperature (°C) operating pressure (bar) The pressure/temperature limits are applicable for the Durability of valve depends on the operating conditions stated nominal pressures and a computed operating life of the application. factor of 25 years.
- Page 3 Diaphragm Valve MV 308 Dimension and spare parts list socket d 16 female threaded socket G 3/8" view A view A item designation item designation body piston bonnet O-ring insert O-ring pressure piece O-ring spindle identification plate indicator pin hexagonal socket screw...
- Page 4 Diaphragm Valve MV 308 Operating instructions: 3. Exchange of O-rings or piston • Disassembly as described under point 2. • Unscrew the insert (3) out of the bonnet (2) with an ATTENTION appropriate spanner. Safe operation of the valve can only be ensured if it is...
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