Description
Leybold-Heraeus 85548 B1 Burkert 331-E Purge Vent Valve NW-10 110V 60Hz DN2
The Leybold-Heraeus 85548 B1 is a solenoid-actuated purge and vent valve designed for use in vacuum systems. It integrates a Burkert 331-E solenoid actuator on a brass valve body fitted with NW-10 (KF-10) small-bore flanges on both ends, making it a compact inline solution for controlled venting or purging of vacuum lines and chambers. The unit is rated for operation from vacuum up to 8 bar (PN Vak-8 bar), is powered at 110V 60Hz, and carries a nominal bore of DN 2.
Specifications & What's Included
- Manufacturer: Leybold-Heraeus (Made in Germany)
- Model / Part Number: 85548 B1
- Solenoid Actuator: Burkert 331-E (Type 872)
- Valve Function: Purge / Vent
- Flange Connection: NW-10 (KF-10) on both inlet and outlet ends
- Nominal Bore: DN 2
- Pressure Rating: PN Vak-8 bar (vacuum to 8 bar)
- Supply Voltage: 110V AC
- Frequency: 60 Hz
- Body Material: Brass
- Country of Manufacture: Germany
- Includes: valve body with integrated Burkert solenoid actuator and NW-10 end flanges; no additional accessories
Applications
Purge and vent valves like the Leybold-Heraeus 85548 B1 are standard components in high-vacuum and rough-vacuum systems used in research labs, semiconductor processing, thin-film deposition, and analytical instrumentation. The vent function allows controlled introduction of gas (typically dry nitrogen or argon) into a vacuum chamber to bring it back to atmospheric pressure safely, protecting both the chamber and any sensitive samples or coatings from sudden pressure changes. The purge function is used to flush residual gases from lines before pumping down. NW-10 (KF-10) small-bore flanges are common on roughing lines, forelines, and instrument connections in turbomolecular and rotary vane pump systems. Leybold-Heraeus — later known simply as Leybold — is a longstanding German manufacturer of vacuum technology equipment, and their valves and accessories were widely used in Leybold vacuum pump systems as well as compatible third-party vacuum setups. The Burkert 331-E solenoid actuator allows this valve to be electrically controlled, making it suitable for automated or interlock-driven vacuum system sequencing.
This Leybold-Heraeus 85548 B1 purge/vent valve with integrated Burkert 331-E solenoid actuator was pulled from a working vacuum system environment where it was actively in use. It has been inspected and appears to be in good condition. The brass body, NW-10 flanges, and solenoid housing show normal wear consistent with lab or industrial use — no cracks, damage, or missing hardware visible. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Leybold-Heraeus |
Model: |
85548 B1 |
MPN: |
85548 B1 |
Secondary Model: |
Burkert 331-E |
Type: |
Purge / Vent Valve |
SKU: |
47376 |
Voltage: |
110V |
Frequency: |
60 Hz |
Nominal Diameter (DN): |
DN 2 |
Pressure Rating: |
PN Vak-8 bar |
Flange Type: |
NW-10 (KF-10) |
Actuator / Solenoid: |
Burkert 331-E Solenoid Actuator |
Valve Function: |
Purge / Vent |
Body Material: |
Brass |
Country/Region of Manufacture: |
Germany |
Condition: |
Used – Pulled from Working Environment |
Seller Notes: |
Valve only, no additional accessories. NW-10 flanges on both ends. |
Condition Notes: |
This Leybold-Heraeus 85548 B1 purge/vent valve with Burkert 331-E solenoid was pulled from a working vacuum system. Inspected and in good condition. Normal wear; no damage visible. |