Diaphragm valve DV308

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  • For regulating viscous fluids or with solid particles
  • Diaphragm in EPDM or FPM, PTEF resistant to all acids
  • PVC, PP or PVDF materials
  • Measures from DN12 3/8 “to DN15 1/2”
  • PN6
  • Handwheel or with pneumatic actuator NA, DA, NC
  • Electromechanical or inductive limit switch
  • Connections socketing, soldering in PP or PE, threaded, with DIN or ANSI flanges

Advantage

• Suitable for dirty fluids or with small solids
• Robust
• Visual position indication

Applications

• Construction of chemical facilities
• Construction of industrial facilities
• Water treatment
• Environmental technology

Use

• To block and also regulate in industrial plants

Fluids

• Neutral media and aggressive liquid or gaseous media, also with abrasive substances, if the valve components that contact the media are resistant to the operating temperature according to the Divatec resistance list.
• In the case of nitric acid or sulfuric acid, ask us about the exact conditions of use.

More Specifications

Testing
• Requirements and tests in accordance with DIN 3441, 3442, 8063 and 16962 standards. DIN EN 12266, leak rate A checked.

Nominal Pressure (H2O, 20°C)
• PN 6

Medium temperature
• See pressure and temperature diagram

Service pressure
• See pressure and temperature diagram

Construction Size
• DN 12 – DN 15

Valve flow body
• PVC-U
• PP
• PVDF

Upper part
• PP, reinforced with fiberglass

Membrane
• EPDM
• FPM
• PTFE (EPDM membrane, coated with PTFE on the fluid side)

O-rings
• –
• FPM
• EPDM

Command
• With pneumatic lifting drive

Control function
• NC (normal closed)
• NO (normal open)
• DA (double acting)
Control pressure
• max. 7 bar (see cam diagram)

Q Flow (Kv Value)
• DN 12 = 3,0 m3/h
• DN 15 = 3,7 m3/h

Stroke limitation
• Turn the indicator pen (6) with a suitable screwdriver counterclockwise.
• The maximum stroke limitation corresponds to approx. 2/3 of the valve stroke.

Connection
• DIN 8063 threaded union
• DN 15: Socket union for gluing DIN ISO (PVC-U)
• DN 15: Inserted piece as DIN ISO welding sleeve (PP)
• DN 15: Inserted piece as DIN ISO welding sleeve (PVDF)
• DN 12: G 3/8 threaded sleeve (PVC-U, PP, PVDF)
• DN 12: Adhesive sleeve (PVC-U) or welding sleeve (PP, PVDF) according to DIN 8063 and/or DIN 16962

Mounting position
• Any

Accesories
• Limit switch

Color
• Body: PVC-U, grey, RAL 7011
• Body: PP, grey, RAL 7032
• Body: PVDF, yellowish white
• Upper part: Orange, RAL 2004