VD/KSM-PA
Pressure and Vacuum Relief Valve made of plastic
Características
Función y descripción
Combined Pressure and Vacuum Relief Valve
The PROTEGO® Valve VD/KSM-PA is a state-of-the-art pressure and vacuum relief valve Pressure and vacuum relief valve A pressure and vacuum relief valve is a pressure equalization valve for impermissible pressure and vacuum in a closed system. with excellent flow performance made of high-grade synthetic material. Typically, the valve is installed in the in-breathing and out-breathing lines of tanks, vessels, 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. to protect against unallowable overpressure Overpressure Overpressure refers to an increase in pressure in a system or vessel above the normal operating pressure. and under pressure Pressure (gauge pressure) Pressure for which the value is equal to the algebraic difference between the absolute pressure and the atmospheric pressure. . The valve prevents emission losses almost up to the set pressure Set pressure Set pressure is the gauge pressure at the device inlet at which the relief device is set to start opening under service conditions. . The valve is a perfect solution for corrosive, polymerizing, or sticky substances.
Full Lift Technology
The 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. will start to open as soon as the set pressure is reached and only requires 10% overpressure to full lift Lift Lift is the actual travel of the valve pallet from the main valve out of the closed position. . Continuous investments in and a commitment to 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 at just 10% below the maximum allowable working pressure and vacuum Vacuum Vacuum is the pressure in an enclosed space that is lower than the ambient pressure. ( MAWP Maximum allowable working pressure (MAWP) Maximum gauge pressure permissible at the top of a completed vessel in its normal operating position at the designated coincident temperature specified for that pressure. and MAWV) of the tank and still safely vent the required mass flow. The opening characteristic for the pressure and vacuum sides is the same.
Advanced Manufacturing Technology
Due to our highly developed manufacturing technology, the tank pressure Tank pressure Tank pressure is the pressure within a tank. is maintained up to the set pressure with a tightness that is far superior to the conventional standard. This feature is achieved by special valve seats made of high quality synthetic material or PTFE. After the excess pressure is released or the vacuum is balances, 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. . 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 many years of research, 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.
Dimensiones
To select the nominal size Nominal size The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (DN), use the flow capacity charts on the following pages
| DN1 | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" | 200 / 8" |
| DN2 | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" | 200 / 8" |
| a | 490 / 19.29 | 650 / 25.59 | 775 / 30.51 | 930 / 36.61 | 1260 / 49.61 |
| a | (750 / 29.53)* | (958 / 37.72)* | (1200 / 47.24)* | ||
| b | 376 / 14.80 | 521 / 20.51 | 563 / 22.17 | 670 / 26.38 | 879 / 34.61 |
| b | (523 / 20.59)* | (651 / 25.63)* | (912 / 35.91)* | ||
| c | 150 / 5.91 | 200 / 7.87 | 225 / 8.86 | 280 / 11.02 | 350 / 13.78 |
| d | 200 / 7.87 | 245 / 9.65 | 300 / 11.81 | 370 / 14.57 | 590 / 23.23 |
| d | (650 / 25.59)* | ||||
| e | 180 / 7.09 | 250 / 9.84 | 300 / 11.81 | 350 / 13.78 | 560 / 22.05 |
| e | (405 / 15.94)* | (500 / 19.68)* |
Dimensiones en mm / pulgadas
*Dimensions in brackets only for PVDF
Selección de materiales para la vivienda
| Design | A | B | C |
| 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. | PE | PP | PVDF |
| Valve seat Valve seat The valve seat is a component on which the valve pallet rests when the valve is closed. | PE | PP | PVDF |
| Sealing | FPM | FPM | FPM |
| Pressure valve pallet | A, C, D | B, C, D | C, D |
| Vacuum valve pallet | A, C, D | B, C, D | C, D |
Special materials upon request
Selección de materiales para la válvula de presión
| Design | A | B | C | D |
| Pressure range [mbar] [inch W.C.] | +6,0 up to +16 +2.4 up to +6.4 | +5,5 up to +16 +2.2 up to +6.4 | +9,5 up to +30 +3.8 up to +12 | +30 up to +100 +12 up to +40 |
| Valve pallet | PE | PP | PVDF | Hastelloy |
| Sealing | PTFE | PTFE | PTFE | PTFE |
| Spindle guide | PE | PP | PVDF | Hastelloy |
| Weight | PE | PP | PVDF | Hastelloy |
Special materials and other pressure settings upon request
Selección de materiales para la válvula de vacío
| Design | A | B | C | D |
| Pressure range [mbar] [inch W.C.] | -6,0 up to -16 -2.4 up to -6.4 | -5,5 up to -16 -2.2 up to -6.4 | -9,5 up to -30 -3.8 up to -12 | -30 up to -100 -12 up to -40 |
| Valve pallet | PE | PP | PVDF | Hastelloy |
| Sealing | PTFE | PTFE | PTFE | PTFE |
| Spindle guide | PE | PP | PVDF | Hastelloy |
| Weight | PE | PP | PVDF | Hastelloy |
Special materials and other vacuum settings upon request
Tipo de bridas de conexión
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 F.F. |
other types upon request
Modelo y especificación
The valve pallets are weight-loaded, and the highest pressure levels are only attained with metal discs.Additional special devices available upon request.
Settings
| Pressure: | +6.0 mbar | +100 mbar |
| +2.4 inch W.C. | +40 inch W.C. | |
| +4.0 mbar | +100 mbar | |
| +1.6 inch W.C. | +40 inch W.C. | |
| +4.5 mbar | +100 mbar | |
| +1.8 inch W.C. | +40 inch W.C. | |
| Vacuum: | -6.0 mbar | -100 mbar |
| -2.4 inch W.C. | -40 inch W.C. | |
| -4.0 mbar | -100 mbar | |
| -1.6 inch W.C. | -40 inch W.C. | |
| -4.5 mbar | -100 mbar | |
| -1.8 inch W.C. | -40 inch W.C. |
Higher and lower settings upon request
Diagrama de flujo volumétrico
Los diagramas de flujo volumétrico han sido determinados con un banco de pruebas de caudal calibrado y certifi - cado por TÜV. El flujo volumétrico V. en [m³/h] y el CFH se refi eren a las condiciones estándar de referencia de aire según ISO 6358 (20°C, 1bar). La conversión a otras densidades y temperaturas están referidas en el Vol. 1: “Fundamentos Técnicos”.
