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AST - Spherical ball

AST - Spherical ball

Kugelhahn-Typ-AST.png.webp

Hartmann Valves valves of the AST series are designed for use as high-pressure valves. With our unique and entirely metallic sealing systems they are equally suitable as reliably sealing shut-off valves for liquid as well as gaseous media with solid particle components.


Information sheet ball valves:

https://www.hartmann-valves.com/wp-content/uploads/2018/11/HARTMANN-Bohrlochkoepfe-EN1.pdf


Video: Mettalic sealing system:

https://www.youtube.com/watch?v=m0QRafwLe7E


Video: Why ball valves instead of gate valves:

https://www.youtube.com/watch?v=O8PgRii_FqU


Technical characteristics


  • Design according to DGRL 2014/68/EU, API 6D or API 6A

  • Entirely metallic sealing

  • 0-bubble leak rate

  • Two- and three part housings (split body) made of forged material

  • Trunnion-mounted ball

  • Blowout-safe operating spindle

  • Float-mounted, self-centering seat rings with pre-tensioned spring elements

  • Automatic housing pressure relief

  • Sealing force dependent on line pressure

  • Double Block and Bleed (DBB)

  • Exchangeability of upper operating spindle seal at full line pressure

  • No electrostatic charge-up

  • Fire safe according to DIN EN ISO 10497 / API 607

  • Maintenance free


Optional design

Upon request we manufacture and deliver the ball valves of the AST series for you:

  • with Double Piston Effect (DIB)

  • made of special materials for extreme application areas

  • soft sealing

  • with and without drainage and ventilation connections

  • with purely metallically sealing drainage ball valves

  • as reduced bore ball valves

  • with special interior and exterior coatings

  • for underground use with a shaft extension of up to 6 meters Length

  • with electric, pneumatic, or electro-hydraulic drives

  • fail-safe close or fail-safe open

  • as a special design for your special application case


Manufacturing program

DGRL 2014/68/EU und API 6D: DN 25 – DN 300 (1“ – 12“) bis PN 420 (ANSI 2500) further nominal widths and pressure stages on request!API 6A: 1 13/16“ – 7 1/16“ bis API 10.000 9“ – 11“ x 10“ bis API 5.000 13 5/8“ – 16 3/4″ bis API 3.000 PSL 1 – PSL 3G Temp. Class K – Y further nominal widths and pressure stages on request!

Hartmann Valves valves of the AST series are designed for use as high-pressure valves. With our unique and entirely metallic sealing systems they are equally suitable as reliably sealing shut-off valves for liquid as well as gaseous media with solid particle components.


Information sheet ball valves:

https://www.hartmann-valves.com/wp-content/uploads/2018/11/HARTMANN-Bohrlochkoepfe-EN1.pdf


Video: Mettalic sealing system:

https://www.youtube.com/watch?v=m0QRafwLe7E


Video: Why ball valves instead of gate valves:

https://www.youtube.com/watch?v=O8PgRii_FqU


Technical characteristics


  • Design according to DGRL 2014/68/EU, API 6D or API 6A

  • Entirely metallic sealing

  • 0-bubble leak rate

  • Two- and three part housings (split body) made of forged material

  • Trunnion-mounted ball

  • Blowout-safe operating spindle

  • Float-mounted, self-centering seat rings with pre-tensioned spring elements

  • Automatic housing pressure relief

  • Sealing force dependent on line pressure

  • Double Block and Bleed (DBB)

  • Exchangeability of upper operating spindle seal at full line pressure

  • No electrostatic charge-up

  • Fire safe according to DIN EN ISO 10497 / API 607

  • Maintenance free


Optional design

Upon request we manufacture and deliver the ball valves of the AST series for you:

  • with Double Piston Effect (DIB)

  • made of special materials for extreme application areas

  • soft sealing

  • with and without drainage and ventilation connections

  • with purely metallically sealing drainage ball valves

  • as reduced bore ball valves

  • with special interior and exterior coatings

  • for underground use with a shaft extension of up to 6 meters Length

  • with electric, pneumatic, or electro-hydraulic drives

  • fail-safe close or fail-safe open

  • as a special design for your special application case


Manufacturing program

DGRL 2014/68/EU und API 6D: DN 25 – DN 300 (1“ – 12“) bis PN 420 (ANSI 2500) further nominal widths and pressure stages on request!API 6A: 1 13/16“ – 7 1/16“ bis API 10.000 9“ – 11“ x 10“ bis API 5.000 13 5/8“ – 16 3/4″ bis API 3.000 PSL 1 – PSL 3G Temp. Class K – Y further nominal widths and pressure stages on request!

Típusok

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Kugelhahn-Typ-AST.png.webp