for pipelines and systems vulnerable to negative pressures, which especially depend on ventilation | float and lever ensure large air escape for constant bleeding under maximum operating pressure | the adjustable vacuum breaker of large nominal width ensures mmaximum ventilation when systems are drained and is two-functional in an optimal way

For plants subject to vacuum hazards, float and lever control the valve shut-off to discharge gas with the additional vacuum breaker function by means of a spring-controlled rubber ball in the large valve seat | suitable for water and petrol | completely made of deep-drawn CrNiMo steel | corrosion-resistant, very lightweight and compact, easy-to-maintain owing to clamp system | EB 1.57 for maximum ventilation performance by means of an enlarged vacuum breaker

For large air volumes at startup, continuous bleeding or venting under pressure, opens with large ventilation capacity if a vacuum is present | suitable for all liquids | completely made of deep-drawn CrNiMo steel | corrosion resistant, very lightweight and compact | long operational lifespan, manageable installation, easy-to-maintain owing to the clamp system – highest effectiveness with compact design

high bleeding or ventilation quantities owing to ventilation cross sections and connection flange dimensions of the same size | bleeding under operating pressure, max. bleeding performance in the start-up mode and max. ventilation performance during draining of systems means optimal three functionality | optionally with anti-shock device for suppression of water hammers

For large air volumes at startup, continuous bleeding or venting under pressure, opens immediately with large ventilation capacity if a vacuum is present | suitable for all liquids | completely made of deep-drawn CrNiMo steel | corrosion resistant, very lightweight and compact | long operational lifespan, manageable installation, easy-to-maintain owing to the clamp system – highest effectiveness with compact design

optimised body construction with guided float to guarantee maximal protection of the bleeding and venting device | high bleeding or ventilation quantities owing to ventilation cross sections and connection flange dimensions of the same size | bleeding under operating pressure, max. bleeding performance in the start-up mode and max. ventilation performance during draining of systems | optionally with anti-shock device for suppression of water hammers

suitable for highest operational pressures | for large air volumes during startup, large air volumes during bleeding | avoids cavitation peaks | bleeding under pressure owing to adapted continuous bleeding valve | massive welded construction, extremely sturdy, also available in seawater resistant materials | suitable for all liquid media, also for petrol, oils and chemicals | three-functional