Burkert Type 2103 (SKU 20077396) is an externally controlled diaphragm valve consisting of a pneumatically operated piston actuator, a diaphragm, and a 2-way valve body. The proven and robust actuator with a stainless steel or PPS housing ensures use in hygienic or aggressive ambient conditions. The flow-efficient valve bodies with little dead space enable high flow rates and a wide range of possible uses.

The actuator has a compact, autoclavable design with gap-free seals. The integration of automation units Type ELEMENT is possible in all configuration levels (can be retrofitted); a fieldbus interface can also be integrated. It is a compact, smooth-surfaced and highly integrated system consisting of a valve and an automation unit with integrated pilot air ducts (no intake of ambient air).

Product Design

Component	Description
1	Transparent cap with position
2	Pilot air port 1 for CF A, CF B and CF I
3	Pilot air port 2 for CF I, exhaust port for CF A and CF B
4	Actuator cover
5	Actuator housing
6	Diaphragm bonnet
7	Diaphragm
8	Body screw
9	Valve body
10	Port connection

General Technical Data

Property	Value
Valve body material	Forged stainless steel, Tube valve body, Cast valve body, Plastic (PVC-C, PVC-U, PP, PVDF)
Diaphragm material	EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)
Actuator material	DN 08...65: PPS; DN 65...100: Stainless steel 1.4308
Maximum pilot pressure	10 bar (7 bar for actuator size 130, 225)
Operating medium	Neutral gases and liquids, highly purified, sterile, aggressive or abrasive mediums
Control medium	Neutral gases, air
Ambient temperature	-10...+60 °C (autoclavable)

Control Functions

• Control function A (CF A): Pneumatically operated 2/2-way on/off valve. Bidirectional. Normally closed by spring force.
• Control function B (CF B): Pneumatically operated 2/2-way on/off valve. Bidirectional. Normally opened by spring force.
• Control function I (CF I): Pneumatically operated 2/2-way on/off valve on either side. Bidirectional. Switching position dependent on external control.

Approvals and Conformities

• Explosion Protection: ATEX: EPS 18 ATEX 2 008 X II 2G Ex h IIC T4…T2 Gb / II 2D Ex h IIIC T135 °C…T300 °C Db. IECEx: IECEx EPS 18.0007X.
• Foods and Beverages/Hygiene: 3-A Sanitary Standards Inc., FDA (Code of Federal Regulations), USP Class VI, EC Regulation 1935/2004.

Explosion Hazard due to Electrostatic Discharge

If statically charged devices or persons discharge suddenly, there is an explosion hazard in the potentially explosive area.

• Take suitable measures to ensure that no electrostatic charge can build up in the potentially explosive area.
• Only clean the device surface by wiping it gently with a damp or antistatic cloth.
• Ground the actuator and the valve body.
• If a plastic valve body is used, ground the actuator separately.

Material Specifications

No.	Element	Material
1	Ground terminal	Stainless steel 1.4301/1.4305 (only for ATEX/IECEx variant)
2	Transparent cap	Polysulfone PSU
3	Pilot air ports	Push-in connector PP (standard), Thread G 1/8" stainless steel 1.4305
4	Actuator	Polyphenylene sulphide PPS
5	Cover	Stainless steel 1.4561 (316Ti)
6	Piston seal	FKM
7	Interface	Polyphenylene sulphide PPS (standard), Stainless steel 1.4308 (360° rotatable on request)
8	Diaphragm	EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)

Installation Note

For optimum self-draining, the inclination angle of the pipeline and the self-draining angle of the valve body must be observed. The marking for self-draining angles on the port connection serves as a guide and must point upwards.