Features
Function and Description
Highly Developed Vacuum Relief Valve
The PROTEGO® V/SV-XXL valve is a highly developed optimized vacuum relief valve Vacuum relief valve 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 Device 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 Vacuum Vacuum is the pressure in an enclosed space that is lower than the ambient pressure. in tanks, containers, and process equipment Equipment Machines, appliances, fixed or mobile devices, control parts and accessories, and warning and prevention systems, whether separate or combined, intended for the generation, transfer, storage, measurement, control, and conversion of energy, and for the processing of materials, which have their own potential source of ignition and may cause an explosion. .
High-Performance Vacuum Relief Valve with Precise Tightness
When the set vacuum Set vacuum Internal negative gauge pressure at which a vacuum valve first opens. is reached, the valve starts to open and reaches full lift Lift Lift is the actual travel of the valve pallet from the main valve out of the closed position. within 100% vacuum increase. The tank vacuum is maintained up to the set vacuum with a tightness that is above the normal standards due to our highly developed manufacturing technology. This feature is ensured by valve seats made of high quality stainless steel with precisely lapped valve pallets and a reinforced housing Housing A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. design. After the vacuum is balanced, the valve re-seats and provides a tight seal Seal 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. .
Flow-Optimized Valve Body for Maximum Efficiency
The optimized fluid dynamic design of the valve body and valve pallet Valve pallet Valve pallet is the generic term for the assembly that rests on the valve seat. is a result of extensive research and development, resulting in stable operation of the valve pallet, optimized performance, and reduced product Product Includes equipment, protective systems, devices, components and combinations of these. losses.
Dimensions
| DN | 300 / 12" |
| a | 946 / 37.24 |
| b | 649 / 25.55 |
Dimensions in mm / inches
Dimensions of pressure Pressure (gauge pressure) Pressure for which the value is equal to the algebraic difference between the absolute pressure and the atmospheric pressure. and vacuum relief valves with heating jacket upon request
Material selection for housing
| Design | A | B | C |
| Housing | Aluminium | Steel | Stainless Steel |
| Heating jacket (V/SV-XXL-H-...) | – | Steel | Stainless Steel |
| Valve seat Valve seat The valve seat is a component on which the valve pallet rests when the valve is closed. | Stainless Steel | Stainless Steel | Stainless Steel |
| Sealing | PTFE | PTFE | PTFE |
| Cover | Aluminium | Steel | Stainless Steel |
Option: Housing ECTFE-coated
Special materials upon request
Material selection for vacuum valve pallet
| Design | A | B |
| Pressure range [mbar] [inch W.C.] | -2.0 up to -9.0 -0.8 up to -3.6 | <-9.0 up to -16 <-3.6 up to -6.4 |
| Valve pallet | Aluminium | Stainless Steel |
| Sealing | Metal to Metal | Metal to Metal |
Special material as well as higher vacuum upon request
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other types upon request
Design Types and Specifications
The valve pallets are weight-loaded. Higher vacuum can be achieved upon request with a special spring Spring A spring is a spiral of wire which returns to its original shape after it is pressed or pulled. -loaded design. There are two different designs:Additional special devices available upon request.
Settings
| Vacuum: | -2.0 mbar | -16 mbar |
| -0.8 inch W.C. |
Higher vacuum settings upon request.
Flow Capacity Chart
The flow capacity charts have been determined with a calibrated and TÜV certified flow capacity test rig. Volume flow V in (m³/h) and CFH refer to the standard reference conditions of air ISO 6358 (20°C, 1bar). For conversion to other densities and temperatures refer to Sec. 1: “Technical Fundamentals”.
