|
Everlasting Valve Company designs industrial valves to work in reactor loading,
lockhoppers, pneumatic conveying systems, vessel discharge, dry solids, and
slurries.
SOLVES VALUES PROBLEMS
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 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 valves are rotating self
lapping sealing surfaces, and self cleaning open body which allows particulate
to freely flow.
DOE test valve internal leakage rates
Reliable and well suited for dry and wet solids after 33,000 cycles
The valve wears IN, not OUT
| Solves Problems |
|
Problems |
Common Valve Leaks |
Everlasting Solution |
Results |
| Seats Wear Out |
Sealing surfaces always meet at the same
point (1 to 4) |
Rotating disc/self lapping |
Seats wear in, seals improves with use |
|
Leak rate limits exceeded soon after installation |
tight shut-off only at time of installation (1-4) |
Rotating disc/self lapping metal to metal seats |
Tight shut-off maintained long after installation |
|
Media build-up, drags across seats |
Ineffective seat cleaning (1-4) |
Sharp edge, shearing disc against flat metal seat |
Media built-up sheared from sealing surfaces |
|
Flow causes erosion across seating surfaces |
Narrow seat band in line with flow (1,2,3) |
Wide seat band perpendicular to flow |
Erosion in flow path does not affect sealing ability |
|
Loss of product through packing gland or top seal |
Stem scores packing or vulnerable "O" ring (1-4) |
Spring loaded packing and non-rising rotating stem |
Reduced maintenance hours, efficient operation |
|
Thermal Lock-up |
Intolerance to different expansion rate (1-4) |
Disc drive to disc is spring loaded |
Constant yield to thermal stress and shock |
|
Excessive pressure drop and reduced flow |
Flow path restricted when valve is open (1,2,3) |
Full port flow |
No obstruction to flow, downsizing possible |
(1) Ball Valve (reduced port)
(2) Plug Valve
(3) Butterfly Valve
(4) Gate Valve |
Summary of
Valves | Process Valve |
Bulk Material Valve
Three Way Diverter Valve | Why Everlasting
Valve
HOME
|
ABOUT |
FAQ
| PRODUCTS |
TESTIMONIALS
| NEWS | SITE
MAP
| CONTACT US
BULK
PROCESS EQUIPMENT INC.
P.O. BOX 38586
Baltimore, Maryland 21231
Phone (410) 327-9242 Fax (410) 327-9212
www.bulk-process-equipment.com
or
www.bulkprocessequipment.com
E-mail:
sales@bulk-process-equipment.com
for search engine
optimization
|
|
|
