Description : Metal to metal sealing Bi-directional tight shut-off. / Achieved by introducing triple offset sealing technology. Triple offset design with inclined conical sealing system. / Eliminates rubbing and jamming associated with sealing surface contact. Laminated metal or solid metal seat. No fasteners on disc, one piece. structure. Provides the non-friction motion.
Source : http://www.unicomvalve.com/products/sub08.htm
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