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Title:
Pump/motor – Pressure rating supplement to NFPA/T2.6.1 R2-2000, Fluid power components – Method for verifying the fatigue and burst pressure ratings of the pressure containing envelope of a metal fluid power pump and motor, 5 pgs.
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 of the pressure containing envelope on positive displacement fluid power pump/motor(s)
common requirements and an industry-wide philosophy in judging one type of pressure capability for fluid power pump/motor(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
pump/motor(s) that are used on systems that use a liquid, rather than a gas to transmit power
product life or a 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 chemiclaly compatible with the materials of the presure 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
cavity failures that will cause fluid to leak to the environment are covered by this standard. This standard encourages manufacturers to use this common method to enhance the crdibility of their pressure ratings.
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