Refrigeration systems and heat pumps. Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes. Requirements and classification Ingestion-build-50790 optics and food

optics and food

which supplement the general requirements for recreational diving services specified in ISO 24803

as they apply to non-active surgical implants

used in elements of connection according to BS EN 3155-002

Refrigeration systems and heat pumps. Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes. Requirements and classification Ingestion-build-50790 optics and food1 Scope This International standard describes requirements, design and installation of flexible pipe elements (e. g., metallic flexible pipe, metallic flexible tube, vibration isolator, expansion joint) and non metallic tube used in the refrigerant circuits of refrigerating systems and heat pumps. It also describes the requirements to qualify the tightness and permeability of non metallic tubes (e. g., plastic) used in evaporating and or condensing