PN25
Bürkert Type 3320 electromotive 2/2-way angle seat valve provides shut-off capabilities under demanding operating conditions. The electromotive actuator features a ball screw that moves the swivel plate at speeds up to 6 mm/s. The valve incorporates a closed design with a powder-coated aluminum actuator housing and a stainless steel CF3M valve body, meeting IP65/IP67 and NEMA 4X protection standards. A self-adjusting packing gland with exchangeable PTFE V-seals maintains tightness and extends service life.
SAFEPOS energy-pack
The optional SAFEPOS energy-pack provides a safety starting position in case of power interruption. The desired position (open, closed, or any intermediate position) is set via the menu. The energy storage device is fully charged and ready for operation after a maximum of 120 seconds.
General Technical Data
| Property | Value |
|---|---|
| Design | Angle seat on/off valve |
| Nominal diameter | DN 15...DN 80, NPS 1/2...3 |
| Flow direction | Against closing direction (below seat) |
| Operating pressure | 0...25 bar(g) (Vacuum variant down to -0.9 bar(g)) |
| Nominal pressure | PN 25 (DIN EN 1333), Class 150 (DIN EN 1759) |
| Seat leakage | Leakage rate A (DIN EN 12266-1), seat seal PTFE and PEEK, test medium air |
| Operating voltage | 24 V DC ± 10 % (maximum residual ripple 10 %) |
| Duty cycle | 100 % |
| Medium temperature | -40...+230 °C |
| Ambient temperature | -25...+65 °C (only without additional modules) |
Materials
| No. | Component | Material |
|---|---|---|
| 1 | Spindle | Stainless steel 1.4401 (316) / 1.4404 (316L) |
| 2 | Spindle seal | PTFE V-seals (filled) with spring compensation |
| 3 | Spindle guide | PEEK or stainless steel 1.4404 (316L) |
| 4 | Packing gland tube | Stainless steel 1.4401 (316) |
| 5 | Seal valve body | Graphite or PTFE |
| 6 | Swivel plate | Stainless steel 1.4401 (316) / 1.4404 (316L) |
| 7 | Valve seat seal | PTFE or PEEK sealing washer |
| 8 | Valve body | Stainless steel CF3M |
Dimensions
| DN | NPS | H1/B1 Standard variant (mm) | H2/B2 Fieldbus variant (mm) |
|---|---|---|---|
| 15 | 1/2 | 311 | 362 |
| 20 | 3/4 | 319 | 369 |
| 25 | 1 | 321 | 372 |
| 32 | 1 1/4 | 330 | 381 |
| 40 | 1 1/2 | 333 | 384 |
| 50 | 2 | 367 | 418 |
Note: Dimensions without sealing function; the actuator is raised by approx. 2 mm in the closed position.
Product Design
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 control electronics are controlled either by standard signals or via a fieldbus (digital). A clearly visible 360° LED ring is attached to the blind cover to indicate the device status, the valve end position, and the operating state.
Maintenance and Service
Risk of injury from high pressure
Before working on the system or device, switch off the pressure and vent or drain lines. Never run the X.TUNE function under medium pressure, as this will result in an uncontrolled process.
Changing the Swivel Plate Set
- Support the swivel plate on the cylindrical part using a prism.
- Knock out the dowel pin using a suitable pin punch (3 mm for spindle diameter 10 mm; 5 mm for spindle diameter 14 mm).
- Remove the swivel plate.
- Place the new swivel plate on the spindle and align the holes.
- Position the dowel pin and carefully knock it in using a hammer, centering it relative to the spindle axis.
Related Products
Explore similar products in our catalog
