INTRODUCTION
● Bi-directional seal design offers flow diversity and extend service life.
● Metal-metal seal tech applied between valve plate and seat, valve seat and body.
● Non-rubber seal between each valve seat and body so as to strengthen low pressure seal, and prevent dust into valve cavity or seal face.
● Lower balancing lever helps to balance the shock from upper side, lower operation torque and indicate position.
● Elastic loading and boost, non-elastic stem seal applied at various pressure range, temperature range.
● The shoulder of valve stem backface seal bonnet so as to isolate filling cavity, which makes it possible to replace valve stem sealing under pressure.
● Grease injection port is located at low pressure position between valve stem and balancing lever shoulder seal.
PARAMETERS