Up to 99.8% Efficiency
BURKERT Type 3361 (SKU 20133398) is an innovative electromotive 2-way globe control valve designed for demanding operating conditions. The electromotive actuator with a ball screw positions the control cone with the highest precision. A unique feature is its high positioning speed of up to 6 mm/s, which reacts almost delay-free to process signals and can be varied according to customer demands. Pressure variations or shocks in the medium are not transferred to the valve position. Each flow-optimised valve body can be equipped with up to 5 different valve seats for precise adaptation.
Product Features
- Highly precise, dynamic closed-loop control
- Weather, impact, and vibration-resistant design
- Several $K_{vs}$ values per port size due to removable valve seats
- Position controller and process controller available
- Hygienic design with a closed actuator and robust surface for fast, residue-free cleaning
Safety Position
If necessary, a safety position can be approached by the optional SAFEPOS energy-pack in case of a power failure. Without the energy storage, the valve is blocked in its last position.
General Technical Data
| Property | Value |
|---|---|
| Design | Globe control valve |
| Nominal diameter | DN 10...DN 100, NPS 3/8...4 |
| Operating pressure | 0...25 bar(g), 40 bar(g) on request |
| Nominal pressure | PN 25/PN 40 (DIN EN 1333), Class 150 (DIN EN 1759) |
| $K_{vs}$ value | 0.1...140 m³/h |
| Flow characteristic | Equal percentage, linear (on request) |
| Travel speed | 6 mm/s (AG2 1300 N), 4 mm/s (AG2 2500 N), 3 mm/s (AG3 7700/10000 N) |
| Operating voltage | 24 V DC ± 10 % |
| Medium temperature | -40 °C...+230 °C |
| Degree of protection | IP65/IP67 (DIN EN 60529), NEMA 4X |
Approvals and Conformities
- Explosion Protection: ATEX / IECEx (Zone 2/22)
- North America: UL Listed (USA/Canada)
- Drinking Water: Suitable for drinking water applications up to +85 °C
- Foods and Beverages: FDA, USP, EC Regulation 1935/2004, China food GB Standards
- Others: Oxygen, Hydrogen, TA Luft variants available
Materials
| Component | Material |
|---|---|
| Actuator housing | Powder-coated aluminium |
| Display housing / blind cover | PPS (standard), stainless steel 1.4301 (for ATEX/IECEx) |
| Spindle | Stainless steel 1.4401 (316) / 1.4404 (316L) |
| Spindle seal | PTFE V-seals (filled) with spring compensation |
| Seat seal | Stainless steel 1.4571 (optionally hardened), PTFE, or PEEK |
| Valve body | Stainless steel CF3M |
Performance Specifications
Flow Characteristics
The globe control valve has different theoretical rangeabilities depending on the seat size. 
Operating Limits
In addition to the maximum operating pressures, the application range of Bürkert process valves is limited by the nominal pressure in accordance with the relevant standard. 
Temperature Limits
The maximum permissible temperature for the environment and the medium are dependent on each other. Derating applies when using additional modules like displays or fieldbus gateways.
Product Assembly
The electromotive linear drive consists of a brushless DC motor, a gear, and a spindle system that transfers the force to the closing element.
Design of Electromotive Valve Type 3361 AG2
Design of Electromotive Valve Type 3361 AG3
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