This section of IEC 60534 introduces a method for forecasting the noise produced within a control valve due to liquid flow, as well as the noise levels that are measured downstream of the valve and beyond the pipe. The noise can originate from both typical turbulence and the cavitation of the liquid within the valve. […]
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This part of IEC 60534-8 includes the method for measuring the sound pressure level due to liquid flow through a control valve and the method for determining the characteristic increase in noise due to the onset of cavitation. It also defines the equipment, methods, and procedures required for laboratory measurement of the airborne sound necessary
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This section of IEC 60534 specifies the mandatory and supplementary markings required for control valves. Some mandatory markings may not be suitable for certain valve designs, and some supplementary markings might only be appropriate for specific types of control valves. It is recommended that all valve markings adhere to this standard as much as possible
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This section of IEC 60534 outlines the requirements for the inspection and routine testing of control valves that are produced in accordance with the other sections of IEC 60534. It is applicable to valves with pressure ratings up to Class 2500, and the requirements for actuators are limited to pneumatic types. This standard is not
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This section of IEC 60534 is intended for industrial-process control valves and outlines the procedures for testing flow capacity, which are essential for calculating the following parameters as specified in IEC 60534-2-1: a) The flow coefficient, C; b) The liquid pressure recovery factor without additional fittings, FL; c) The combined liquid pressure recovery factor and
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This section of IEC 60534 is applicable to all varieties of industrial-process control valves (hereafter referred to as control valves). It establishes a partial basic terminology list and offers guidance on utilizing the other sections of IEC 60534.
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This section of IEC 60519 pertains to industrial high-frequency dielectric heating installations designed for thermal applications such as melting, drying, welding, insect extermination, and the bonding of partially or non-conductive materials like plastics, wood, rubber, textiles, glass, ceramics, paper, bamboo, and food products, all within normal and protective atmospheres, including the use of inert gases
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This part of IEC 60519 applies to electroheat installations for remelting and, in some cases, refining processes of metals through direct resistance heating of a conductive slag. The particular requirements for the safety of persons in or around an electroslag remelting furnace are the object of this standard. The general requirements are included in IEC
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This section of IEC 60519 is applicable to installations for induction and conduction heating of solids at low, mains, medium, and high frequencies (for conduction heating, use of direct current is also included); installations for induction melting, holding, and superheating liquid metal at low, mains, medium, and high frequencies; and those parts of the conveying
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This section of IEC 60519 is applicable to indirect resistance heating equipment and direct resistance heating equipment specified in items a) and b) below, respectively, operating in voltage bands 1 and 2. The objective of this standard is to standardize safety requirements for both indirect and direct resistance heating equipment described below. a) Indirect Resistance
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