| Model | U851 – Cast Iron U853 – Carbon Steel U864 – SST |
| Sizes | 1/2″ – 4″ (13 – 102mm) |
| Fluid | Steam, Water, Corrosive Liquids |
| Connection Type | Flanged, Buttweld, Socketweld, Threaded |
| Gland Packing | Graphite, PTFE, High Temperature Laminated Graphite |
Armstrong International owns the exclusive rights to Aeroflow®, D-BoyTM, DLOTM, K-MaxTM, DOS, D-Series, and DOTTM Control Valves—all formerly sold by Leslie Controls. This includes the engineering and design of these product lines and all technical details.
The DLO (S)-2 cage-retained control valves are designed for general purpose control of clean, dirty, viscous or corrosive liquids, as well as Iow to medium pressure, clean or dirty steam and gas service.
The cage-retained seat design eliminates the need or use of any threaded internal parts insuring ease of maintenance and parts replacement even after years in corrosive service. Top entry design also permits easy access to all internal parts for inspection or maintenance without removal of the valve from the pipeline. The DLO-2 class also features the highest Cv capacity of any comparable single seated valve in the industry providing maximum flows and minimum pressure losses. Two point stem guiding provides rigid plug guiding and makes these valves especially suited for controlling dirty liquids or steam.
Through-bolted bonnet on cast steel and stainless steel valves, in lieu of bonnet studs, makes valve servicing easy, even after many years of service in corrosive environments.
