Page 199 - Bürkert

On-Off Pneumatically Operated 2/2 Way Forged Diaphragm Valve

2103 DN8-50 mm

• Hygienic stainless steel design
• Optical display as standard in series
• Interface to feedback and
control options

• For highly pure and aseptic materials
• Certification acc. to FDA 2 (A)
• Silencer included 1 (P)

The externally piloted diaphragm valve, Type 2103, consists of a pneu- Envelope Dimensions (see datasheet for details)
matically operated piston actuator, a diaphragm and a 2-way valve body

made of forged steel. The high-quality drive with stainless steel casing Drawing shows dimensions for
ensures its suitable use in hygienic or aggressive environments. The weld end connection, for further
streamlined and zero dead volume valve body allows high flow rates and versions with threaded port see
versatility. datasheet.

Technical Data
Pressure range see Ordering Chart
Temperature media -10 ºC to +130 ºC
(for steam sterilization short term up to +150 °C)
Viscosity up to viscous
Ambient temperature +5 °C to +60 ºC.
Body material Forged stainless steel 316L/1.4435/BN2
Fe < 0.5% / C ≤ 0.03%
Internal finish Ra ≤ 0.6 µm
External finish Forged surface
Seal material EPDM (FDA and KTW approval) or
PTFE/EPDM (FDA approval)
Actuator material Actuator PPS
Cover stainless steel 1.4561 (316Ti)
Control medium Neutral gases, air Orifice Actuator A H LS DS Ø
EN ISO 1127/
Flow direction Bidirectional [mm] [inch] ISO 4200 DIN 11850 R2
Pilot connections Push-in connector (external Ø 6 mm or ¼”) 8 1/4” 50 64.5 129 90 13.5 –
Norms FDA compliant , 3A 10 3/8” 50 64.5 144 110 17.2 13
15 1/2” 70 91 161 110 21.3 19
20 3/4” 70 91 171 119 26.9 23
Options 25 1” 70 91 174 129 33.7 29
25 1” 90 120 207 129 33.7 29
• Any standard surface finish 40 1 1/2” 130 159 288 161 48.3 41
• Classic actuator for sizes above 2” 50 2” 130 159 311 192 60.3 53
• Control heads/Positioner
• Advanced PTFE/EPDM
• Control function B (normally open) and I (double-acting)

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