WEAR OF PTFE SEALS IN THE BALL VALVES
Journal Title: Tribologia - Year 2012, Vol 245, Issue 5
Abstract
The article presents the research results of leakage from ball valves. Leakage was measured for a new valve and after an assumed number of open/close cycles using the helium detection method. The roughness of a valve ball and cooperating sealing rings were measured after and before cycle tests. It was found that the leakage value increases with the increase of number of cycles. The research includes the analysis of chosen roughness parameters and their influence on leakage. It shows that the particles collected on the seals determined the roughness of ball. The proposed method of the investigation allowed the author to find that the wear process that caused the leakage increase from ball valve.<br/><br/>
Authors and Affiliations
Marek Gawliński, Janusz Rogula, Adam Baradziej
Keywords
Related Articles
- EP ID EP270420
- DOI -
- Views 51
- Downloads 0
Wpływ na powierzchniową trwałość zmęczeniową wybranych materiałów i technologii konstytuowania warstw powierzchniowych elementów węzła tocznego
THE INFLUENCE OF TEMPERATURE ON THE FLOW OF GREASE IN THE BOUNDARY LAYER
The influence of temperature on superficial and boundary layers forming in commercial grease ŁT4-S2, in the vicinity of walls made of six different materials, i.e. two elastomeric materials (70E, 70F), two thermoplastic...
THE LUBRICITY AND LOW FRICTION ADDITIVES FOR TRANSMISSION OIL
The subject of this paper is the extension of the durability of multi-stage gear units working in moments or constant overloads. Gear oils in sugar conveyor systems of the DC tray extractor were tested. Lubrication param...
SURFACE LAYER IN THE PROCESS OF FRICTION
Chosen questions were introduced in the article the relating problems of the border layer which deciding about the resistances of the movement and the waste of the elements of the knots of the friction and processes them...
LUBRICATION STABILITY AND OXIDATION STABILITY OF MODIFIED GREASES
This article presents the results of the oxidation stability and service life of greases prepared with and without the addition of modifiers. The effectiveness of the additives used in the grease was calculated based on...