English to Russian Tech/Engineering Engineering: Industrial

Design Features
• Coalescing/particle or particle only filtration element options
• Interlinked transfer valves with bolted construction and providing a safe and zero-leak operation both to atmosphere and isolating the pressure vessels
• Both transfer valve (class A) and needle valve (class B) compliant to ISO 15848 (fugitive emission)
• Bolted cover construction allowing an easy and clean filter element change out
• Integrated equalizing line and standardized, modular needle valve simplifying tubing and flange requirements
Performance Characteristics
Pressure-drop
The pressure-drop in a filter system is the pressure difference before and after the filter system.
Pressure-drop occurs due to transfer valves, pipe bends, filter media selection and the loading of the filter element.
Pressure drop curves in *seal gas coalescing application* show three stages:
1.
Start-up (clean) pressure-drop
When a new filter element is installed, the element is clean and dry, the filter media pores are not blocked with particles or liquid droplets, and gas flows freely; most of the pressure-drop is caused by the filter system.
The start-up pressure-drop (clean and dry filter element) of the total system is described in the API 692 as filter sizing parameter.