A new ISO Standard has recently been published and is now available from the National Fluid Power Association (NFPA).
ISO 19973-4:2014, Pneumatic fluid power – Assessment of component reliability by testing – Part 4: Pressure regulators [second edition]. ISO 19973-4:2014 provides test procedures for assessing the reliability of pneumatic pressure regulators by testing, using the general test conditions and calculation method from ISO 19973-1. ISO 19973-4 applies to manually adjustable and remote-piloted pressure regulators, both relieving and non-relieving, but does not apply to pressure regulators that have a permanent bleed. The standard also specifies test equipment and failure criteria (threshold levels) for tests to assess the reliability of pneumatic pressure regulators.
ISO 19973-4 benefits users of pneumatic components by providing a standardized method for assessing and expressing the reliability of pneumatic pressure regulators. This allows users to determine if a particular component is suitable for the application and to compare the reliability of components from different manufacturers.
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NFPA provides a forum for the fluid power industry’s channel partners—manufacturers, suppliers, distributors, customers and educators. Its U.S. and multinational members work cooperatively in advancing hydraulic and pneumatic technology through the association’s many programs and initiatives. NFPA coordinates standards development for fluid power at the industry and international levels. These standards are intended as guides to aid the manufacturer, the consumer, and the user.