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.