LEYBOLD
Leybold LEYCON DN10 Power-Failure Venting Valve
- Connection
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- Function
- Spring opens; electromagnet closes
- Pressure range
- 10⁻⁶–2500 mbar absolute
Leybold Large ISO Right-Angle Vacuum Valve DN250–DN1000
Leybold large right-angle valves provide electropneumatic isolation for industrial vacuum chambers, coating systems and large pumping lines. Select the flange size, opening pressure difference and installation space together.
Leybold large right-angle valve manufacturer illustration.
Part of the Leybold LEYCON vacuum valves family. Compare the range and other model options.
- Sizes
- DN250, 320, 400, 500, 630, 800, 1000
- Conductance, listed size order
- 2500 / 4100 / 6300 / 10500 / 16500 / 29400 / 46900 l/s
- Helium leak rate
- 1 × 10⁻⁹ mbar l/s
- Mounting
- Vertical; pneumatic cylinder at top
Price and availability
Tell us the configuration and quantity you need. Include your process requirements if you would like help with selection.
View quote listProduct details
Applications and selection
Leybold large right-angle valves provide electropneumatic isolation for industrial vacuum chambers, coating systems and large pumping lines. Select the flange size, opening pressure difference and installation space together.
Key specifications
| Specification | Details |
|---|---|
| Sizes | DN250, 320, 400, 500, 630, 800, 1000 |
| Conductance, listed size order | 2500 / 4100 / 6300 / 10500 / 16500 / 29400 / 46900 l/s |
| Helium leak rate | 1 × 10⁻⁹ mbar l/s |
| Mounting | Vertical; pneumatic cylinder at top |
| Maximum operating temperature | 60 °C |
| Opening differential limit | 300 mbar DN250; 50 mbar DN320–1000 |
| Materials | 304 stainless housing/disc; 316L bellows; FKM seals |
Documented configurations
| Specification | Details |
|---|---|
| 504137V003 | DN250 ISO configuration; confirm flange drawing and order build |
| 504138V003 | DN320 ISO configuration; confirm flange drawing and order build |
| 504139V003 | DN400 ISO configuration; confirm flange drawing and order build |
| 504140V003 | DN500 ISO configuration; confirm flange drawing and order build |
| 504141V003 | DN630 ISO configuration; confirm flange drawing and order build |
| 504142V003 | DN800 ISO configuration; confirm flange drawing and order build |
| 504143V003 | DN1000 ISO configuration; confirm flange drawing and order build |
Flanges and actuation
The manual identifies DN250 ISO-K connections, DN320–630 ISO-K/ISO-F arrangements and DN800/1000 ISO-F. Use the exact drawing for both connection faces. The brochure’s DN250 connection row contains a conflicting size; this page follows the operating manual.
Select the 24 V DC pilot arrangement and compressed-air supply for the specified build. The opening differential is much lower than atmospheric pressure: equalise the system before opening as required. ANSI versions require separate selection and are not represented by these ISO order references.
Materials, installation and enquiry
Confirm gas compatibility, cleanliness, working and bakeout temperature, flange standard, mounting orientation and pressure difference before selection. A nominal flange size alone does not establish compatibility. Request connection hardware, controls and spares explicitly; accessories are included only where specified in the quotation.
For valve selection, send the line size, pressure range, gas or process, required fail position, actuation supply and switching duty. For replacements, include the complete valve nameplate.
Dimensions and installation
Manufacturer downloads
Technical source: 300950715_002_C1, pp.12–15; large-valve datasheet 3611 0070 02, 08/2024. The exact order reference, supplied equipment and availability are confirmed with the quotation.
Selection and support
Explore the Leybold LEYCON vacuum valves and Leybold brand guide. Compare vacuum gauges and controllers, plan gauge calibration, or discuss servicing.
For Large ISO Right-Angle Vacuum Valve DN250–DN1000, include working pressure, required flow or chamber volume, gas and vapour load, operating hours, electrical supply and connections. For a replacement, send the complete nameplate and serial number so the configuration can be checked.
Specifications
| Manufacturer | LEYBOLD |
|---|---|
| Equipment type | Vacuum Valves |
| Sizes | DN250, 320, 400, 500, 630, 800, 1000 |
| Conductance, listed size order | 2500 / 4100 / 6300 / 10500 / 16500 / 29400 / 46900 l/s |
| Helium leak rate | 1 × 10⁻⁹ mbar l/s |
| Mounting | Vertical; pneumatic cylinder at top |
| Maximum operating temperature | 60 °C |
| Opening differential limit | 300 mbar DN250; 50 mbar DN320–1000 |
| Materials | 304 stainless housing/disc; 316L bellows; FKM seals |
Parts, consumables and workshop support
Send the pump model and part number when asking about a replacement. Compatibility depends on the equipment and operating conditions.
Before you order
Confirm the exact version, electrical supply and connections. Ask whether oil, filters, fittings, cables or controllers are included or separately specified.
Availability, lead time and the applicable warranty are confirmed for your quotation. A catalogue listing does not reserve stock.
What to check in your quotation · Delivery · Returns and faults
Enquire about this product
Leybold Large ISO Right-Angle Vacuum Valve DN250–DN1000
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Compare selected equipment
Compare the stated conditions as well as the values. A missing specification is not a zero rating; confirm suitability with Girovac.