Creating a pressure drop when measuring the flow of liquids, gases, water vapor using the differential pressure method.
The DFS-type bladder of version 1 is installed between the end faces of flanges of version 3 under GOST 33259-2015 with the use of a rubberized asbestos fabric.
The DFS-type bladder of version 2 combines a bladder and oval sealing ring (Armco), and is installed between flanges of version 7 under GOST 33259-2015 and does not require additional sealing materials.
Structural design of the disk:
- Standard bladders for pipelines with an internal diameter greater than or equal to 50 mm (under GOST 8.586.1 (2)); the code is "GOST";
with a service opening (without diameter boring); the code is "B/R". - Online questionnaire.