(1) The fluid resistance is small.
(2) It can be used for medium containing hard suspension; since the medium is only in contact with the valve body and the diaphragm, there is no need for a stuffing box, there is no leakage problem of the stuffing box, and there is no possibility of corrosion on the stem portion.
(3) Suitable for corrosive, viscous, and slurry media.
(4) Cannot be used in places with high pressure.
Hydraulic Coupling,Flexible Spring Coupling,Spring Coupling
Anti-Tear Conveyor Belt Co., Ltd. , http://www.nsbelts.com