Types

• Type K: Steel, standard spring load

• Type KS: Steel, high spring load

• Type KN: Stainless steel, standard spring load

• Type KSN: Stainless steel, high spring load

Type K / KS

• Housing steel, blackened

• Ball steel, 1.3505, hardened

Type KN / KSN

• Housing stainless steel AISI 303

• Ball stainless steel AISI 420C, hardened

Pressure spring

Stainless steel AISI 631

Identification of the types KS / KSN

Housing with 2 longitudinal markings