Global growing environmental awareness and laws to avoid fugitive emission, environment protection as well as safety considerations are increasing the need of pressurized double seal installation. All pressurized double seals are required to a controlled fluid supply to provide the necessary cooling and lubrication for the seal faces. A barrier fluid system introduced between the seals, which avoids or reduced the free emission of the sealed medium to the atmosphere. So there are different types of barrier fluid system and control equipment are available, which can be configuring according to the customer requirement.
