Product Description
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.
Technical Specifications
- Forged steel valve body (VS)
- Forged stainless steel 1.4435 in accordance with BN2 DIN EN 10222 – 5, F316L in accordance
- Tube valve body (VP)
- Stainless steel tube 1.4435-BN2 / UNS S31603 (316L) according to DIN 11866, ASTM A269 /
- Cast valve body (VG)
- Investment cast material 1.4435 / 316L
- Plastic body (PV, PP, PD)
- PVC (PVC-U), PP, PVDF
- Diaphragm
- EPDM (AD) , PTFE/EPDM (EA) , Advanced PTFE/EPDM (EU) , laminate of GYLON® and EPDM
- Actuator
- PA
- Diaphragm size
- 65, 80, 100 mm
- Maximum pilot pressure
- 6 bar
- EPDM (AD)
- - 10…+ 143 °C (steam sterilisation + 150 °C for 60 min)
- PTFE/EPDM (EA)
- - 10…+ 130 °C (steam sterilisation + 140 °C for 60 min)
- Advanced PTFE/EPDM (EU)
- - 5…+ 143 °C (steam sterilisation + 150 °C for 60 min)
- Nominal diameter
- DN 65…DN 100 (2½"… 4")
- Welded connection
- DIN EN ISO 1127 / ISO 4200 / DIN 11866 series B
- Clamp connection
- DIN 32676 series A (DIN pipe)
- Loose flange
- DN 65
Standards & Compliance
- HS Code
- 8481.80
Cross References
- Burkert 2731
- Buerkert 2731
- Bürkert 2731
- Type 2731
- Burkert Type 2731
Product Documentation
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Catalogue entry last verified: 2026-09-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy Type 2731?
- Type 2731 can be ordered from cballast.com as a Bürkert catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Bürkert product?
- The manufacturer part number is Type 2731.
- What is the HS code for Type 2731?
- The customs tariff (HS) code for Type 2731 is 8481.80.
- Who manufactures Type 2731?
- Type 2731 is a Bürkert product in the Valves range.
- Is a datasheet available for Type 2731?
- Yes — the Type 2731 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for Type 2731?
- The minimum order quantity is 1.
- Is Type 2731 available?
- Yes — Type 2731 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).