|
In 1906,
Everlasting Valve Company was formed by Patterson Allen Engineering,
Paterson, NJ to manufacture and market steam boiler blow down valves for steam
locomotives, tug boats, ocean liners, Great Lake steamers and the US Navy. As
the motive force for these modes of transportation faded packaged boilers for
industry and space heating emerged. Everlasting has become a standard for this
industry. The unique features of this valve are Rotating self lapping sealing
surfaces, and self cleaning open body which allows particulate to freely
flow.
FLAT DISC ROTATES WITH EACH CYCLE
TO SELF LAP IN ABRASIVE
MEDIA
1=Initial Leak Test (NEW VALVE)
2=Leak Test after 25,000 cycles in Dry
Coarse Limestone
3=Leat Test after
additional 8,582 cycles
with 25-35 wt. %
Limestone Slurry. |
DOE
ENERGY TECHNOLOGY CENTER GRAPH
The above graph was developed at the
Morgantown Energy Technology Center to determine a state-of-the-art valve for
lock-hopper service for the Dept. of Energy Clean Coals Technology
program.
Everlasting was selected as the best from all the available
valve types tested. The criteria were that after 25,000 cycles the valve could
not leak more than 18 SCFM of air. When new the Everlasting Valve (metal
seated) leaked 5 SCFM, after 25,000 cycles in dry Limestone the valve leaked 3
SCFM. The same valve was then put in a Limestone slurry cycling 8,500
additional times for a total of 33,500 cycles with 1 SCFM final leak rate. The
diminished leak rate is a direct result of the Flat Rotating Disc self-lapping
characteristic. Refer to the complete report and you will see photos of the
tested valve and that the media swirls in the eccentric body to promote
self-cleaning.
SOLVES PROBLEMS... Click Here
To view
brochure and specification pages,
please click any link below:
Steam
Jacketed Valves
page 1,
page 2
PDF
Rotating Disc Valves
page 1,
page 2,
page 3,
page 4
PDF
*Please Click Here For A Process
Valve Request For Quote
Form (RFQ) (html page)
View pdf for Process Valve
RFQ
PROCESS VALVES
Applications for Process
valves are; Petroleum refineries catalysts; chemical plant reactor loading;
pneumatic conveying; inorganic chemicals; line diverters. Any process
application where you get less than a year service from the installed
valve.
Shearing of disc and seat
edges clean
sealing surfaces
|
