Full Description

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 fluid power hydraulic valves;common requirements and an industry-wide philosophy in judging one type of pressure capability for hydraulic valves typically used in fluid power applications; uniform methods of product comparison;hydraulic valves may contain one or more pressure zones. Each pressure zone may have pressure ratings based on a maximum differential pressure to an adjacent lower pressure zone or atmosphere;attachments (see 3.3) can be rated as integral parts of hydraulic valves or as an independent components.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; pressure levels and pulse durations as defined in NFPA/T2.6.1 R2-2000; 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 more 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.

Product Details

Edition: 3rd Published: 03/15/2000 Number of Pages: 9 File Size: 1 file , 380 KB