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Industrial-process control valves - Dimensions. Face-to-face dimensions for flanged, two-way, globe-type, straight pattern and centre-to-face dimensions for flanged, two-way, globe-type, angle pattern control valves. Original standard BS EN IEC 60534-3-1-2019 in PDF full version. Additional info + preview on request

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Industrial-process control valves - Inspection and routine testing. Original standard BS EN IEC 60534-4-2022 in PDF full version. Additional info + preview on request

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Directly heated negative temperature coefficient thermistors - Generic specification. Original standard BS EN IEC 60539-1-2023 in PDF full version. Additional info + preview on request

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Directly heated negative temperature coefficient thermistors - Sectional specification. Surface mount negative temperature coefficient thermistors. Original standard BS EN IEC 60539-2-2019 in PDF full version. Additional info + preview on request

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Electrical insulating materials. Determination of the effects of ionizing radiation - Procedures for assessment of ageing in service. Original standard BS EN IEC 60544-5-2022 in PDF full version. Additional info + preview on request

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Guidelines for commissioning and operation of hydraulic turbines, pump-turbines and storage pumps. Original standard BS EN IEC 60545-2021 in PDF full version. Additional info + preview on request

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