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Bottom Outlet
ball valve

› Dead space free

› marshy

› direct flange

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DN 50 - DN 350

Pressure max.

-1 bar bis +40 bar

Suitable for vacuum

-196°C to +500°C

Technical data

  • Application


    › Filter dryer / vacuum dryer

    › Stirrer vessel

    › Transport vessels

    › Reactor

    › Other vessel

    Areas of application:

    › Chemical

    › Pharmaceutical

    › Food

    › Cosmetics

  • Medium

    › Gases

    › Fluids

    › Emulsion

    › Sirup

    › Suspension

    › Granulate material

    › Powder

  • Design


    › Low sump area

    › Cavity free

    › Full bore

    › Spring loaded ball sealing system

    › direct mounting to vessel flange

    › chambered coil springs

    › Angled stem design

    › Double sealing of vessel flange

    › One piece body design

    › Adjustable and maintenance free stem sealing with additional o-ring

    Additional according to customer requirements:

    › Metal to metal sealing system for high pressure, high temperature and abrasive operating conditions

    › Ball valve design customizable to special vessel flanges

    › Piping acc. to customer request e.g. thread, Clamp, Camlock, Swagelok etc.

    › Bottom vessel flange contour can be adapted to vessel shape.

    › Heating jacket

    › Flushing connection

    › Extended stem

    › Double packed stuffing box design

    › Antistatic- Design

    › Fire Safe Design

    › Scraper chamfer for cutting viscous product

    › Product contact surfaces Ra<0,8μm

    › Electropolished surfaces

    › Oil - and fat free design

    › Silicone free design

    › Further extras available on request

    Connection to vessel:

    › Vessel bottom flange acct. to DIN28117/28140

    › Special connection according to customers’ request

    Connection to pipeline:

    › Flange acc. to EN1092-1

    › Weld end acc. to DIN11850

    › Thread acc. to DIN11851

    › Clamp acc. to DIN32676

    › Special connection acc. to customers´ request

    Tightness test:

    › Acc. To EN 12266-1 leak rate A

    Actuator mounting flange:

    › DIN/ISO 5211


    › TA-Luft

    › ATEX 94/9/EG

  • Material

    Metal: 1.4404

    Ball sealing: PTFE & PTFE/25% Glass fibre

    O-Rings: Viton, EPDM or FEP-Viton

    Stem sealing: Packing out of PTFE or pure graphite with additional o-ring

    Coil springs: 1.4404

  • Special material

    Metal: austenite stainless steel (904L, 472/649, etc.) nickel- base alloy ( Hastelloy ® B, Hastelloy ® C, C276, Alloy 59 etc.) Duplex , Titanium, Monel ®, Inconel ®, Incoloy ®, Zirconium
    Further materials on request

    Ball sealing: PTFE- Compounds (glass, carbon, graphite, stainless steel, etc.), PEEK, Polyimide, Metal to metal sealing system - High velocity oxygen spraying (HVOF), Flame spraying with additional thermal compaction, Laser deposition welding and Plasma-transferred arc welding (PTA)
    Further materials on request

    Further sealing: graphite, FEP coated Compounds, PFA coated Compounds, Kalrez, high- and low temperature - Kalrez, PFA/FEP coated stainless steel for cryogenic application, silver coated metallic o- and c-rings

    Conformity: USP, FDA, EFSA, ADI, 3-A, oil- and fat free
    Further conformity on request

    Stem sealing: PTFE chevron packing, high temperature packing
    Further materials on request

    Coil springs: Hastelloy ®
    Further materials on request

  • Downloads


ATEC Bottom Outlet Ball Valve Typ_BS


Low sump area

By the use of an angled stem design and the direct mounting to the vessel bottom flange, the ATEC bottom outlet ball valve ensures flush fitting with the vessel inner bottom.

› Minimal accumulation of product between ball valve ball and vessel inner bottom

› Improvement of product mixing in stirrer vessel

› Reduction of efflorescence and product agglomeration

› Avoiding false samples


Cavity free

The usual cavity between ball and housing in non- cavity free ball valves give cause for disturbance because residual products can crystallize, polymerize and so affect the function.

› Clean, non- false product

› No sediments of expensive products in the ball valve housing


Spring loaded ball sealing system

Approximately same torque at different temperatures This request can only be achieved by ball valves with a spring-loaded sealing system. Different heat expansion of metallic and synthetic material cause high torques by non spring-loaded sealing systems so that the valve can block and does not open or close anymore. Longer lifetime through spring- loaded sealing system. Spring-loaded cavity free ball valves achieve this improvement in a variety of processes. At abrasion, the spring-loaded sealing system guarantees a controlled compression of the ball sealing so that longer sealing life and leak-tightness can be realized

› Longer Lifetime

› Same torque at different temperatures


Angled stem design

Because of the further distance from the actuator mounting flange to the vessel, it makes the automation of the ball valve and isolation of the vessel very convenient.

› Easy automation of ball valve

› Easy isolation of vessel

› Flush fitting of ball valve with vessel inner bottom


Direct mounting to vessel flange

The ball valve is mounted directly using screws or bolts to the vessel flange.

› Direct and easy assembly of ball valve to the container flange