Nombre | apoyo | Revisión | Disponibilidad | Fecha de emisión | Precio | ||
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PDF |
Inglés |
Vigente |
15/3/2000 |
43,00 € |
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Detalles
1.1 This standard provides:
- test and statistical methods for generating fatigue distribution data,
- test and statistical methods for conducting a verification of the pressure ratings on pneumatic valves,
- common requirements and an industry-wide philosophy in judging one type of pressure capability for pneumatic valves,
- uniform methods of product comparison.
1.2 This standard limits conditions as follows:
- constant amplitude, pressure induced loading of the elements that constitute or maintain the pressure containing envelope,
- product life of at least 100,000 cycles,
- defined conditions for pressure levels and pulse durations,
- temperatures from the charpy impact transition temperature to the threshold of creep sensitivity,
- environments which are chemically compatible with the materials of the pressure containing envelope,
- materials that are aluminum, magnesium, steel, iron, copper based alloys, cobalt, titanium, stainless steels, nickel steels, and monel. Specifically excluded are creep sensitive materials such as: zinc, plastic, rubber, and sealing devices.
1.3 This standard encourages manufacturers to use this common method to enhance the credibility of their pressure ratings.
Información adicional
Autor | National Fluid Power Association |
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Publicado por | NFPA-FLUID |
Tipo de Documento | Norma |
Fecha de confirmación | 2019-01-01 |
Edición | 3 |
Número de páginas | 12 |
Palabra clave | NFPA (Fluid) T3.21.4 R2-2000 (R2019) |