Palm Button Valves

Palm button models are operated with a palm button that directly connects to the spool. The standard position of the palm button for a 3-position valve is the center of the valve (Position "B"). To fully shift the valve, the palm button is pushed away from the operator (Position "A") or pulled towards the operator (Position "C"). On 2-position valves, there is no positive lock for centering the spool (Position "B").
Code Prefixes Description Symbol
KE KE, BKE
NKE, ZKE
ZNKE
2-position, friction positioned. Spool stays in any position when knob is released. KE
KO KO, BKO
NKO, ZKO
ZNKO
2-position, spring returned spool. Spool returns to position "C" when the knob is released. KO
KA KA, BKA
NKA, ZKA
ZNKA
2-position, spring returned spool. Spool returns to position "A" when the knob is released. Reverse action compared to the general KO style. KA
KR KR, BKR
NKR, ZKR
ZNKR
2-position, pilot returned spool. Spool returns to position "C" from auxiliary control valve furnished by the user (or by knob). KR
KY KY, BKY
NKY, ZKY
ZNKY
3-position, spring centered. When knob is released, spool shifts to center (position "B"). KY
KD KD, BKD
NKD, ZKD
ZNKD
3-position, friction position, positive detent in all positions. Spool stays in position when knob is released. KD
KW KW
NKW, ZKW
ZNKW
3-position, positive detent in position 'C', spring return from position 'A' to center position 'B'. Previously known as 189VY action. KW
KX KX
NKX, ZKX
ZNKX
3-position, positive detent in position 'A', spring return from position 'C' to center position 'B'. Previously known as 360VY action. KX