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A liquid ring machine is a rotary positive displacement machine in which gas compression is achieved by the action of a radially bladed impeller mounted in an eccentric, or elliptical, casing which is partially filled with liquid. Covers the minimum requirements for liquid ring vacuum pumps and compressors for general service, including basic design, materials and auxiliary equipment.
The Engineering Equipment and Materials Users' Association is a European based organisation, supporting companies that own or operate industrial facilities.
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
We connect trusted knowledge to customers' workflows – mitigating risk, increasing efficiency and accelerating innovation For more than 60 years, leading R&D and engineering-intensive organizations have relied on us to achieve on-time, on-budget delivery of complex projects and new products. We deliver an unparalleled combination of technical content and Artificial Intelligence (AI) technologies to surface answers from the vast universe of technical knowledge, both inside and outside the organization. In a single interface, we connect the dots between information scattered across many different sources, allowing technical professionals to make better, more informed decisions faster.