Mô tả
Product benefits
Long gland life and high functional reliability
- Stem with shank burnished to a surface finish of 0.2 μm for reduced friction, lower actuating torque and improved sealing to atmosphere.
- Packing end rings enable higher compressive force by gland follower and prevent extrusion of middle graphite packing rings.
- Two-piece self-aligning gland follower prevents distortion on stem surface caused by improper assembly.
Reliable sealing and longer service life
- Hard-faced body seat and solid wedge seat made of wearresistant and corrosion-proof materials for handling all kinds of corrosive and erosive fluids.
- Male/female joint between body and bonnet prevents excessive compression of fully confined gasket, resulting inlonger gasket life and improved sealing performance.
Additional safety and blow-out protection
- Standard metal back seat prevents blow-out of stem and other internal components from the valve body and bonnet as a result of fluid pressure inside the valve body.
Versatile application
- Stem nut made of chrome nickel steel is suitable for numerous applications, particularly fluids which must not come into contact with component materials containing copper.
Extended maintenance-free service life
- Wear allowance higher than specified in relevant standard, for substantially increased service life.
- Hard-facing applied to wedge and seat rings by deposit welding provides extra wear allowance and ensures reliable long-term sealing even with frequent opening/ closing cycles.
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