Frequently Asked Questions
Discover detailed answers to a wide range of frequently asked questions. From the importance of CIP & SIP to pipeline labeling – here you’ll find clear and practical information. For further inquiries, our support team will be happy to assist you.
FAQs
Here you’ll find answers to the most frequently asked questions. If you need further details, our team will be happy to assist you personally.
A manual caliper with a vernier scale enables precise measurement by combining readings from the main scale and the vernier. The value is determined by adding the vernier reading to the last visible value on the main scale. This method allows for a measuring accuracy of up to 0.02 mm.
Bara and barg are pressure units used to indicate absolute and relative pressure, respectively. Bara refers to absolute pressure, which includes atmospheric pressure, while barg refers to gauge pressure, which is measured relative to atmospheric pressure. Vacuum levels are typically expressed in bara, since it reflects pressure relative to a perfect vacuum (0 bar abs). Barg values are negative in the vacuum range.
ANSI class and nominal pressure (PN) both indicate the pressure rating of valves. ANSI uses “Class” ratings based on the ASME/ANSI standard (in psi), while PN (pressure nominal) is defined under the DIN/EN standard (in bar). Because both systems are based on different reference temperatures and materials, conversion tables should be used with caution and only as an approximation.
Nominal sizes defined by DIN (DN) and NPS (Nominal Pipe Size) differ in terms of measurement system and specification approach. DN is a metric-based designation (not an exact diameter), while NPS is based on inch dimensions and primarily used in North America. Both systems serve to standardize pipe dimensions, and approximate conversions are possible between them – though not always exact.
Material numbers uniquely identify material compositions and follow a defined designation system. Each number consists of digits for the main group and chemical composition, making it internationally recognized in standards such as the DIN-EN classification.
IP protection classes indicate how well housings and devices are protected against the ingress of foreign objects and water. The first digit describes protection against solid objects, while the second digit indicates protection against water. High values represent maximum protection and are particularly relevant in industry.
CIP (Clean-in-Place) and SIP (Sterilize-in-Place) are methods for cleaning and sterilizing equipment without disassembly. CIP removes residues and impurities, while SIP allows for sterilization using hot steam and ensures germ-free conditions. Both methods are used in the food and pharmaceutical industries.
Pipelines are color-coded and labeled to indicate their contents and pressure levels. These labeling systems enhance safety and facilitate maintenance, especially in complex facilities.
ASTM (American Society for Testing and Materials) develops international standards for materials, products, and systems. These standards specify properties, testing procedures, and application guidelines and ensure quality and consistency across various industries.
Both ASTM and ASME (American Society of Mechanical Engineers) develop standards, but for different areas. ASTM focuses on materials and testing methods, while ASME provides standards for construction and pressure vessels.
Would you like personal advice?
Direct Contact
Do you have questions about our products or services? Would you like personal advice on a specific topic? Don’t hesitate to contact us directly – our experts are here for you and look forward to assisting you.