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Balls and Seats
 | Many choices of carbide or ceramic sealing surfaces | |
| Wide choice of high strength and corrosion resistant base materials | |
| including 410SS, 17-4PH, 316ss, 329SS, Stellite 6, Inconels, Hastelloys, Alloy 20, Monel, Titanium, Zirconium and others. | ||
| Each seat is hardened and lapped for a Zero Leakage seal. | |
| Sharp edged seat rings for a clean sealing surface each time the ball | |
| is actuated | ||
| Wide sealing area on each seat | |
| Choice of integral or non-integral seats | |
| For our unidirectional valves, down-stream seats are mate-lapped to | |
| the body and captured to prevent behind-the-seat leakage. | ||
| A relief or "arcuate cut" is available as an option. |
Bearings and Stem Seals
| Coated and lapped stem internal stem seals | |
| External stem bushing for proper stem alignment | |
| Grafoil packing rings | |
| Radiused packing follower for even stem loading | |
| Bearings are located on the top and bottom of the stem for precision | |
| alignment. |
Packing
| Four bolt packing assemble | |
| Anti-extrusion rings | |
| Nuclear Grade Grafoil Packing | |
| Heavy duty, radiused packing follower | |
| Optional: High temperature packing design |
Mounting Flanges for Actuators
| Bolted, heavy duty bracket for all levers, gear operators and actuators | |
| Precision aligned with guide pins and stem bushings to prevent side | |
| load of the stem |
Gaskets
| Spiral wound Gaskets are chosen for most designs from 150# to | |
| 1500# ANSI Class. The most common material chosen is Inconel with Graphoil. | ||
| Copeland designed, pressure energized delta rings are chosen | |
| exclusively for ANSI class valves rated over 1500#. |
seat for mining and
applications involving
slurries
Special Coatings
for Slurry Services
