Page 185 - Bürkert

2/2-way Compact Diaphragm Valve, cast valve body,
threaded port connection

2031 Compact • Hermetical separation of fluids from

the actuator by diaphragm
• For contaminated, viscous or
dirty fluids
• Optical position indicator is standard

2 (A)

1 (P)

The externally piloted diaphragm valve consists of a pneumatically Dimensions [mm] (see datasheet for further Details)
operated piston actuator, a diaphragm and a 2-way valve housing made
of investment cast stainless steel.

The standard material of the actuator is PA polyamide. With its favourable B
flow characteristics, the valve enables high flow capacities and a variety
of applications for contaminated, viscous or dirty fluids to be realised.
A
Technical Data

Port connection Threaded ports ISO 228
Orifice DN15-20
Body material Cast stainless steel 316L/1.4435
Actuator material PA polyamide
Pilot air ports Stainless steel 1.4305
Seal materials EPDM, FKM, EPDM lined with PTFE
Medium Neutral gases and liquids, sterile, aggressive or
abrasive fluids
Viscosity Up to viscous C
Medium temperature
EPDM -5 to +130°C
Briefly up to +150°C for steam sterilisation
FKM, EPDM lined with PTFE -5 to +130°C
Ambient temperature -5 to +60°C
D
Control medium Neutral gases; air
Installation As required, preferably with actuator in upright
position
Options
• Control function B (open by spring force)
DN A B C D
and I (double-acting actuator) 15 63 39 122 56
• Feedback 20 80 52 148 80
• Stroke limitation

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