FIELD: machine building.
SUBSTANCE: biasing device for use with a piston actuator of a fluid valve includes a tubular seat member, a tubular retention member, a tubular retention bracket and a biasing element disposed between an external annular flange of tubular seat member and an external annular flange of tubular seat bracket. Tubular retention member is partially disposed within tubular seat member. Latter passes through an opening in inner flange of tubular seat member, and plate is larger than opening in inner flange of tubular seat member. Tubular retention member is partially located in tubular seat bracket and passes through an opening in inner flange of tubular seat bracket. Basing member is seated against exterior annular flange of tubular seat member and against exterior annular flange of tubular seat bracket.
EFFECT: tubular retention member is attached to seat bracket to form a self-contained device.
20 cl, 14 dwg
