Hartmann Valves: Metal-to-Metal Sealing System in Ball Valves

How can you get the maximum service life for your ball valves while reducing maintenance costs? Our ball valve animation shows you in 3D the benefits of metal-to-metal ball valve sealing versus soft sealing or PMSS systems.
When a ball valve closes, the internal velocity of the medium increases. Every medium flow contains debris, so the increased velocity from closing the valve means that the debris particles strike the seal at high velocity. In a soft sealing ball valve or PMSS system, the seal is exposed and is damaged as the debris embeds itself and scratches the ball. The uncoated ball is damaged at the inlet side and the soft seal receives damage at the downstream side. As the debris embeds, the ball becomes scratched and the ball valve starts to leak, resulting in expensive down times and repairs.
Hartmann Valves has developed the solution: a bubble-tight metal-to-metal sealing system. Our hard coating protects the ball and our hard coated seat rings are designed to avoid damage in the seat area. The Hartmann metal-to-metal sealed ball valves have a rate "A" requirement and should have no visible leakage. Gas tight even at high cycles: for a long-lasting shut-off with minimal maintenance effort and cost. Get the maximum service life for your valves. SAFE. RELIABLE. LONG-LASTING. Hartmann Valves & Wellheads.

[@amywang920]

Guangzhou JST SEALS Technology Co.,ltd produces O ring and lip seal for the ball valve.

[@geremiaspereiramaciel4844]

Já trabalhei com manutenção de válvulas Hartmann modelo H e U.

[@GASCLAUDIOchannel]

Guys i've a generic question about valves production: when a valve requires o-rings, lip seals or other seals in specific areas of the valve (like on the seat rings or between two parts in order to prevent leakage) are they usually engineered by the same manufacturer that engineers the valve parts or by others?
Then, if the seals are engineered by others(that i think happens in the majority of the cases) do the real manufacturers of the valve re-make the FEA about the body parts plus the seals to check the entire integrity of the valves in static/dynamic/fatigue analysis? What is the real work flow?

[@Sketch1994]

These components are standardized. When engineering something you don't really run FEAs on random assemblies but rather check the use limits of each part to see how it affects the specs of the standardized mating component. For example if a bore can swell by 20microns under pressure you need to take that into account for the compression height, hence the diameter tolerances of an oring groove, effectively narrowing your allowable production tolerances