Up to 99.8% Efficiency
Burkert Type 3361 is an innovative electromotive 2-way globe control valve designed for demanding operating conditions. It features highly precise, dynamic closed-loop control with a positioning speed of up to 6 mm/s that reacts almost delay-free to process signals. The flow-optimized valve body can be equipped with up to 5 different valve seats for precise adaptation to customer needs. The valve offers a weather, impact, and vibration-resistant design with IP65/IP67 and NEMA 4X protection, ensuring hygienic requirements for fast and residue-free cleaning are met. If necessary, a safety position can be approached by an optional SAFEPOS energy-pack in case of power failure.
General Technical Data
| Product properties | Description |
|---|---|
| Design | Globe control valve |
| Nominal diameter | DN 10...DN 100, NPS 3/8...4 |
| Safety setting (power failure) | With SAFEPOS energy-pack: open, closed or freely programmable. Without: blocked in last position |
| Flow direction | Against closing direction (below seat) |
| Controller variant | Positioner or process controller (option) |
| Weight | AG2: up to 5.5 kg, AG3: up to 16 kg |
| Operating pressure | 0...25 bar(g), 40 bar(g) on request. Vacuum variant down to -0.9 bar(g) |
| Nominal pressure | PN 25/PN 40 (DIN EN 1333), Class 150 (DIN EN 1759) |
| Kvs value | 0.1...140 m³/h |
| Seat leakage | Class III, IV and VI (DIN EN 60534-4) |
| Closing time | AG2: 3.3...6.6 s, AG3: 8.7...12.0 s |
| Travel speed | 6 mm/s (AG2 1300 N), 4 mm/s (AG2 2500 N), 3 mm/s (AG3 7700 N/10000 N) |
| Operating voltage | 24 V DC ± 10 % (maximum residual ripple 10 %) |
| Operating medium | Steam, neutral gases, water, alcohols, oils, fuels, hydraulic fluids, salt solutions, organic solvents, oxygen (optional), hydrogen (optional), lyes (optional) |
| Medium temperature | -40 °C...+230 °C |
| Ambient temperature | -25 °C...+65 °C (without additional modules) |
| Degree of protection | IP65/IP67 (DIN EN 60529), NEMA 4X |
Approvals and Conformities
Conformity Notes
The approvals and conformities listed below must be stated when making enquiries. Not all available variants can be supplied with all approvals.
- Explosion protection: Optional ATEX/IECEx (Category 3 device suitable for zone 2/22).
- North America: Optional Actuators UL Listed for the USA and Canada (UL 61010-1).
- Drinking water: Optional suitability for drinking water applications (TrinkwasserV, up to +85 °C).
- Foods and beverages/Hygiene: FDA, USP, EC Regulation 1935/2004, China food GB Standards.
- Others: Oxygen suitability, Hydrogen suitability, TA Luft.
Materials
Actuator Materials
| Component | Material |
|---|---|
| Display housing/blind cover | PPS (standard), stainless steel 1.4301 (for ATEX/IECEx) |
| Actuator cover | PPS (AG2) / PC (AG3) |
| Seal | EPDM |
| Actuator housing | Powder-coated aluminium |
| Actuator base | PPS (AG2) / Stainless steel 1.4308 (AG3) |
Valve Body Materials
| Component | Material |
|---|---|
| Spindle | Stainless steel 1.4401 (316)/1.4404 (316L) |
| Spindle seal | PTFE V-seals (filled) with spring compensation |
| Valve body seal | Graphite or PTFE |
| Seat seal | Stainless steel 1.4571 (optionally hardened), PTFE or PEEK seal washer |
| Control cone / Valve seat | Stainless steel 1.4571 (optionally hardened) |
| Valve body | Stainless steel CF3M |
Dimensions
Actuator Dimensions
AG2 Actuator
AG3 Actuator
Body with Flange Connection
Body with Threaded Connection
Body with Welded Connection
Body with Clamp Connection
Operating Limits
Temperature and Pressure Limits
The maximum permissible temperature for the environment and the medium are dependent on each other. The maximum allowable temperature curves of different device variants are determined for maximum operating conditions. For deviating operating conditions, an individual verification can be carried out.
Operating limits for seat seal:
- Metal seals (Class III/IV): -40 °C to +230 °C (Stainless steel). Metallic seals are impervious even under demanding process conditions.
- Soft seals (Class VI): -40 °C to +130 °C (PTFE). By using plastics as sealing material, the control valves can close tightly.
- PEEK seals (Class VI): -10 °C to +230 °C.
Product Design and 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. The integrated electronics are controlled either by standard signals (analogue) or via a fieldbus (digital). A positioner and a process controller are available as controller variants.
The optional energy storage device SAFEPOS energy-pack is available. If the supply voltage fails, it supplies the actuator with the energy required to move the valve into the desired position, which can be set in the menu.
