scope:

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 filter /separator housing(s);

− common requirements and an industry-wide philosophy in judging one type of pressure capability for fluid power hydraulic filter/separator housing(s);

− uniform methods of product comparison.

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;

− to exclude the finite life RFP rating for a hydraulic filter /separator housing (such as spin-on filters) used in finite life applications. See NFPA/T3.10.17.

This standard encourages manufacturers to use this common method to enhance the credibility of their pressure ratings.