Lubricated for life eliminating the need for any maintenance.
Permanent corrosion resistant unlike immitations that use simple surface coating.
Unrestricted flow along the entire passage assures true flow capacity.
Stronger body structure to withstand though application condition.
Micro-lapped to a surface finish of 2 light bands for higher precision and longer lasting.
To ensure it stays in position eliminating the posibility of backing O-ring damaged caused by turning motion.
Protect electrical and support components from water damage.