Breather valve: Impresses with controlled pressure maintenance.
Vessels and tanks with minimal design pressures are effectively protected against the lowest overpressure and vacuum with ELEVENT® breather valves. They reliably prevent the escape of gases, environmentally harmful substances or explosive mixtures as well as the ingress of air. A constant controlled tank pressure level is assured. The extraordinarily light and compact design is achieved with a deep-drawn stainless steel or metal housing. The clamp connections result in a modular design with interchangeable components. Maintenance can be carried out quickly and easily. The trend-setting valve concept with deep-drawn housing parts offers a flexible design of the connections, i.e. an exact adaptation of the valve to all system specifications. Connection variants with ANSI flanges, Tri-Clamp and pipe fittings according to DIN 11851 as well as CF and KF flanges are available on request.
ELEVENT® is used in the oil and gas industries, food processing, the chemical and pharmaceutical sectors and power plant technology. The optimised "air cushion" sealing principle provides a smooth valve stroke and an extremely reliable leak-tight seal. This prevents abrasion and valve chatter. The metal housing is made from deep-drawn stainless steel.
Advantages
- Nominal diameters DN 25 to DN 200.
- Lowest response pressures from 2 mbar to 200 mbar, depending on the nominal diameter.
- Quick and easy inspection and maintenance through clamp connections.
- Seals and weights can be replaced on site.
- Modular design (interchangeable elements).
- Light and compact design.
- Extreme stability with low weight.
- Optimised sealing technology.
- HALAR and PFA coating*.
- Special materials like Hastelloy C-276/C-22*
- Special versions*.
- Heatable version*.
- Signalling*.
Mechanism
The weight-loaded valve disc seals the system until the operating pressure exceeds the response pressure. When responding, the disc is lifted and the pressure can escape. After the pressure drop, the valve disc lowers and the process is safely closed again. The optimised guide using an "air cushion" principle allows a gentle valve lift during the pressure relief process. Wear and valve flutter are effectively prevented
