Page 217 - Bürkert

Manually Operated 2/2-way Forged Diaphragm Valve

3233 DN8-80 mm

• Hermetic separation of fluids
from actuator
• For high purity and aseptic mediums
• Certifications for hygienic processing
applications
• CIP/SIP
• Zero dead volume

Hand operated diaphragm valve designed specifically for 3A/FDA com- Envelope Dimensions [mm]
pliant bioprocessing tasks. The forged 316L stainless steel body can be
delivered with your specific surface finish with a range of diaphragm ma-
terials to suit positive control of ultra-pure, abrasive and aggressive fluids.
The flow is continuously adjustable with the hand wheel. The valves are zero
dead volume and can be mounted to self-draining. The valves are autoclavable.

Technical Data
Pressure range see ordering chart
Temperature media -10 ºC to +130 ºC (for steam sterilization
short time up to +150 °C)
Ambient temperature Up to +130 ºC, short time up to 150 ºC
Body material Forged stainless steel 316L/1.4435/BN2
Fe < 0.5% / C ≤ 0.03%
Size A B C
Seal material EPDM (FDA and KTW approval) or [mm] [inch]
PTFE/EPDM (FDA approval)
15 1/2” 110 80 92
Viscosity to viscous 20 3/4” 119 80 104
Surface 25 1” 129 80 106
mechanically polished Ra ≤ 0.6 µm (Average roughness) 40 1 161 114 135
(outside forged surface) 1/2”
electropolished inside (outside Ra ≤ 0.4 µm (Average roughness) 50 2” 192 114 158
Forged surface electropolished)
(others on request)
Actuator materials
Handwheel and attachment
DN8-50 PPS, stainless steel Options
Handwheel and attachment • All mechanical and electropolished finishes a standard
DN65-100 Stainless steel
• Locking function
Installation for self-draining operation

α

marking for
self-drain angle
α = 15 up to 35º (Marking must face upwards, 12 o’clock position) plus 1º to 5º inclination to the pipe axis.
Drain marks permanently marked on both sides of the valve body show the correct mounting position to optimise drain ability.

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