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Type 2731 Pneumatically Operated 2-Way Diaphragm Control Valve
Brand: Burkert Fluid Control Systems
The externally controlled diaphragm valve type 2731 consists of a pneumatically operated piston actuator, a bult-in positioner,a diaphragm and a 2-way valve housing.
The proven and robust actuator with plastic housing ensures use under hygienic or aggressive environmental conditions. The flow-efficient valve housing with little dead space enable high flow rates and a wide range of possible uses. The valve housing and the diaphragm are available in all common materials and designs.
The actuator has a compact, autoclavable design (PPS version). The integration of automation units Top Control 8692/8693/8694 Side Control 8635/8792/8793 is possible in all expansion stages (can be retrofitted). An explosion-proof ATEX / IECEx device variant is available.
The add-on housing is optionally available in plastic or stainless steel. The actuator is equipped with an integrated, optical position indicator as standard, optionally a min./max. stroke limitation can be installed.
Features
- Valve housing and diaphragm available in various materials and designs
- Surfaces in contact with the product from Ra ≤ 0.38 µm...1.6 µm (optionally electropolished)
- Available in all common connection sizes and variants
Specifications
Certifications & Approvals
- ATEX / IECEx
- FDA
- USP
- 3-A Sanitary
Body Material
- Forged Steel Valve Body: Forged Stainless Steel 1.4435, 316L, A182/A182M & 316L
- Tube Valve Body (VP): Stainless Steel Tube 1.4435-BN2 / UNS S31603 (316L)
- Cast Valve Body (VG): Cast 316L Stainless Steel/1.4435
- Plastic Body: PVC (PVC-U), PP, PVDF
Diaphragm Material
- EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), Laminate of Gylon & EPDM (ER)
Actuator Material
- PA
Diaphragm Size
- 65 mm, 80 mm, 100 mm
Pilot Pressure
- Maximum 6 bar
Media
- Neutral Gases and Fluids, Highly Purified, Sterile, Aggressive or Abrasive Mediums
Medium Temperature
- -10° to 143° C
Ambient Temperature
- -10° to 50° C
Port Connection Type
- Welded, Clamp, Loose Flange, Fixed Flange
Nominal Diameter
- DN 65 to DN 100 (2-1/2" to 4")
