BURKERT 346883 Type 2031 is an externally controlled 2/2-way diaphragm valve with a pneumatic piston actuator and diaphragm seal. It uses neutral gases or air to control the flow of media. The proven and robust PPS actuator combined with a stainless steel valve body ensures reliable operation in hygienic or aggressive environments. The flow-optimised valve body with minimal dead space enables high volume flow rates and a wide range of possible applications.

Technical Data

• Control Function: A - normally closed (NC)
• Operating Pressure: 0 to 10 bar
• Pilot Pressure: 5 to 7 bar
• Medium Temperature: -10 °C to +143 °C (Steam sterilisation max. +150 °C for 60 min)
• Ambient Temperature: +5 °C to +140 °C
• Kv Value (Water): 6.5 m³/h

INFO

The device is CIP and SIP capable, making it suitable for hygienic and sterile applications.

Operating Conditions

Pressure-Temperature Diagram

The information in the pressure-temperature diagram is important for material selection. Observe the permissible operating pressure, depending on the medium temperature.

Installation

Installation Position

The valve can be installed in any position, preferably with the actuator facing up. For leakage detection, one of the relief bores in the diaphragm bonnet must be at the lowest position.

Ensuring Self-Draining

The installer and the operator are responsible for ensuring self-draining. The inclination angle should correspond to the inclination angle of the pipeline. For pipelines, the inclination angles specified in the valid ASME BPE standard are recommended.

Welding the Valve Body

Damage to the diaphragm or the actuator

The diaphragm and actuator can be damaged when welding the valve body into the pipeline. Remove the actuator and diaphragm from the valve body before installation.

Maintenance

The device actuator is maintenance-free if the instructions are followed. Components subject to natural wear are seals and the diaphragm.

• After the first steam sterilisation and when required: Tighten the body screws crosswise.
• After 10^5 switching cycles at the latest: Check the diaphragm for wear.