Características
Função e descrição
Highly Developed Vacuum Relief Valve
The V/SV Type PROTEGO® valve is a highly developed vacuum relief valve Soupape de dépression A vacuum relief valve is used to ventilate a part of the system and protects it from impermissible underpressure. with excellent flow performance. It is primarily used as a device Appareil A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow. for relieving vacuum Dépression Vacuum is the pressure in an enclosed space that is lower than the ambient pressure. in tanks, containers and process engineering equipment. The valve offers reliable protection against vacuum, and prevents inbreathing of air close to the set pressure Pression de réponse Set pressure is the gauge pressure at the device inlet at which the relief device is set to start opening under service conditions. .
10% Technology
The device will start to open as soon as the set pressure is reached and only requires 10% overpressure Surpression Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure. to full lift Course Lift is the actual travel of the valve pallet from the main valve out of the closed position. . Continuous investments into research and development have allowed PROTEGO® to develop a low pressure valve which has the same opening characteristic as a high pressure safety relief valve. This “Full Lift Type” technology allows the valve to be set just 10% below the maximum allowable working pressure of the tank and still safely vent the required mass flow.
Valve Seats Made of High Quality Stainless Steel
Due to our highly developed manufacturing technology the tank pressure Pression de la cuve Tank pressure is the pressure within a tank. is maintained up to set pressure, with a tightness that is far superior to the conventional standard. This feature is achieved by valve seats made of high quality stainless steel and with precisely lapped valve pallets (1) or with an air cushion seal Joint A seal prevents or limits unwanted transfer of product from one container to another. Seal is used as superordinate term for all types of sealing elements. (2) in conjunction with high quality FEP diaphragm Membrane A diaphragm is a thin layer of material, which has a large surface area. . The valve pallets are also available with a PTFE seal to prevent the valve pallets from sticking when sticky products are used, and they enable the use of corrosive media. After the vacuum is relieved, the valve reseats and provides a tight seal again.
Flow-Optimized Valve Body for Maximum Performance
The optimized fluid dynamic design of the valve body and valve pallet Clapet Valve pallet is the generic term for the assembly that rests on the valve seat. is a result of many years of research work, which allow a stable operation of the valve pallet and optimized performance resulting in reduction of product losses.
Tabela de dimensões
Para escolher o diâmetro nominal (DN), veja o diagrama de vazão da página seguinte
| DN | 40 / 1½" | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" | 200 / 8" | 250 / 10" | 300 / 12" |
| a | 249* / 9.8* | 249 | 312 | 358 | 443 | 520 | 588 | 588 |
| b | 325* / 12.79* | 337 | 400 | 514 | 713 | 808 | 925 | 925 |
Dimensões em mm
Dimensões para a válvula de vácuo com camisa de aquecimento sob solicitação
Seleção do material do corpo
| Design | A | B | C |
| Housing | Aluminium | Steel | Stainless Steel |
| Heating jacket (V / SV-H-...) | – | Steel | Stainless Steel |
| Valve seat | Stainless Steel | Stainless Steel | Stainless Steel |
| Sealing | PTFE | PTFE | PTFE |
| Cover | Aluminium | Steel | Stainless Steel |
Os corpos também podem ser fornecidos com revestimento de ECTFE
Materiais especiais sob solicitação
Seleção do material do disco da válvula de vácuo
| Design | A | B | C | D | E | F |
| Pressure range [mbar] [inch W.C.] | -2,0 up to -3,5 -0.8 up to -1.4 | <-3,5 up to -14 <-1.4 up to -5.6 | <-14 up to -35 <-5.6 up to -14 | <-14 up to -35 <-5.6up to -14 | <-35 up to -60 <-14 up to -24 | <-35 up to -60 <-14 up to -24 |
| Valve pallet | Aluminium | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel |
| Sealing | FEP | FEP | Metal to Metal | PTFE | Metal to Metal | PTFE |
Special material as well as higher vacuum upon request
Tipo de conexão flangeada
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
Outras conexões sob solicitação
Versão e especificação
There are two different designs:Additional special devices available upon request
Ajustes de pressão
| Vácuo: | -2.0 mbar | -60 mbar |
| -0.8 inch W.C. | -24 inch W.C. |
Ajustes de vácuo mais altos sob solicitação.
Diagrama de vazão
Este diagrama de vazão foi determinado em uma bancada de medição de vazão calibrada e certificada pela TÜV. A vazão V em m³/h se refere ao estado técnico padrão de ar, conforme ISO 6358 (20°C, 1bar). Para conversão em outras densidades e temperaturas, veja o cap. 1: Bases técnicas.
