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Festo
8191891
Ball valve unit VZBC-A-50-FF-40-22-F0507-V4V4T-PB160
This Festo 8191891 industrial component features a 2-way ball valve with a pneumatic quarter-turn actuator, soft sealing principle, and in-line installation with any mounting position. The unit incorporates a nominal width DN of 50, a nominal pressure PN of 40, and an operating pressure range of 0.55 MPa to 0.8 MPa, delivering a flow rate Kv of 275 m³/h for compatible media including compressed air, inert gas, water without vapor, and neutral liquids across a medium temperature range of -10 °C to 200 °C. Built on EN 1092-1 and ISO 5211 norms with an F0507 flange hole pattern and an EN 1092-1 flange connection, it requires 54 Nm of breakaway torque at nominal differential pressure and operates on ISO 8573-1:2010 [7:4:4] compressed air with optional oil lubrication. Submit the exact part number, quantity, and application requirements to request a quote.
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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 8191891
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 8191891.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Structural design
- 2-way ball valve | Quarter turn actuator
- Actuation type
- Pneumatic
- Sealing principle
- Soft
- Mounting position
- Any
- Type of mounting
- In-line installation
- Fitting connection
- Flange as per EN 1092-1
- Switching position indication
- Slot direction = ow direction
- Flange hole pattern
- F0507
- Nominal width DN
- 50
- Valve function
- 2/2
- Flow direction
- Reversible
- Operating pressure
- 0.55 MPa...0.8 MPa | 5.5 bar...8 bar | 79.75 psi...116 psi
- Nominal pressure of tting PN
- 40
- Breakaway torque at differential pressure, nominal pressure, tting PN
- 54 Nm
- Based on norm
- EN 1092-1 | ISO 5211
- Medium
- Compressed air as per ISO 8573-1:2010 [-:-:-] | Inert gas | Water – no water vapor | Neutral liquids | Other ow media on request
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4]
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- Temperature of medium
- -10 °C...200 °C
- Flow rate Kv
- 275 m³/h
- Max. surface temperature of assembly
- +105°C...+280°C | T4...T2
- Explosion group of assembly
- IIC, IIIC
- Note on materials
- RoHS compliant
- LABS (PWIS) conformity
- VDMA24364 Zone III
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 8191891. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.