Hygienic Design
Burkert 356531 Type 2103 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 housing ensures reliable 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 a large stainless steel housing and gap-free seals.
This specific model features a stainless steel body with a weld end connection (DN 15), an EPDM high-temperature diaphragm, and operates with a control function A (normally closed). It is designed for a nominal pressure of 0 to 10 bar and medium temperatures ranging from -10 °C to 143 °C.
Key Features
- Valve body material: Stainless steel
- Port connection: Weld end
- Diaphragm: EPDM high-temperature
- Actuator: PPS (Polyphenylene sulphide) with stainless steel casing
- Integration: Automation units Type ELEMENT can be integrated in all configuration levels.
Product Overview
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
Product Identification
1 Type | 2 Control function 3 Diaphragm size (number) / actuator size (letter) | 4 Diaphragm material 5 Valve body material | 6 Pilot pressure 7 CE marking | 8 Manufacture code 9 Port connection main dimensions | 10 Operating pressure 11 Permitted medium temperature | 12 Permitted ambient temperature 13 Article number
General Technical Data
| Product properties | Description |
|---|---|
| Forged steel valve body (VS) | Forged stainless steel 1.4435 in accordance with BN2 DIN EN 1022 - 5, F316L in accordance with to ASTM, A182/A182M and 316L in accordance with to ASME BPE |
| Diaphragm | EPDM (AD) |
| Actuator | DN 08...65, PPS |
| Actuator casing | DN 08...65, stainless steel 1.4561 (316Ti) |
| Maximum pilot pressure (SF A) | 10 bar |
| Pilot air port | Push-in connector for outer diameter, ∅ 6 mm or 1/4" (standard), thread G 1/8" |
| Operating medium | Neutral gases and liquids, highly purified, sterile, aggressive or abrasive mediums |
| Medium temperature (EPDM) | -10...+143 °C (steam sterilisation + 150 °C for 60 min) |
| 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.
Dimensions: Forged Steel Valve Body (VS) with Welded Connection
Note: Dimensions in mm, unless otherwise stated.
| Diaphragm size | Port connection DN | ∅ D1 | s | L | h | H |
|---|---|---|---|---|---|---|
| ASME BPE / DIN 11866 series C | ||||||
| 8 | 1/2" | 12.7 | 1.65 | 89 | 9.3 | 18.8 |
| 15 | 1/2" | 12.7 | 1.65 | 108 | 8.2 | 19.9 |
| 15 | 3/4" | 19.05 | 1.65 | 108 | 12.1 | 23.8 |
| 20 | 3/4" | 19.05 | 1.65 | 117 | 16.0 | 30.3 |
| 25 | 1" | 25.4 | 1.65 | 127 | 19.0 | 37.0 |
Explosion Protection (ATEX/IECEx)
For devices with the PX51 code (EPS 18 ATEX 2008 X / IECEx EPS 18.0007 X mech.Ex h IIC T4…T2 Gb / Ex h IIIC T135 °C…T300 °C Db), special conditions apply for use in potentially explosive areas (Zones 1/21 and 2/22).
Explosion Hazard due to Electrostatic Discharge
If electrostatically charged devices or persons discharge suddenly, there is a risk of explosion in the potentially explosive area.
- Take appropriate 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.
Special Conditions for Grounding:
- Ground the valve body: To establish potential equalization, ground the valve body to the piping system using a conductive connection.
- Exposed metal parts: Exposed metal parts not integrated into the valve's potential equalization (PA) must be incorporated into the PA by the customer via an additional PA connection.
- Ground conductive parts: Conductive parts must be grounded separately using a grounding strap clip or grounding terminal.
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