DS -- GENERAL INFORMATION
The Brand Double Selector DS is a 6-way two position double selector valve. We offer this valve with
four different operators: electric, pilot, manual lever and manual knob. This valve is typically used to
divert flow between two separate circuits. The standard selector spool (open cross-over) allows operation
of two double action cylinders or two reversible motors with one 4-way directional control valve. It also
allows operation of four single action cylinders with one 4-way directional control valve. When the coil is
de-energized top ports C and D are connected to B and F respectively. When the coil is energized top ports
C and D are connected to A and E respectively. We also have a series/parallel spool available that is used
to operate two motors in series when the coil is energized and in parallel when the coil is de-energized.
SPOOL TYPE – The spool types offered are series/parallel (A, in model code), selector (B, in model
code) open cross-over, selector (C, in model code) closed cross-over, selector (F, in model code) open
cross-over with unused ports open, and selector (G, in model code) closed cross-over with unused ports
open. A closed cross-over spool should be used when isolating the work ports (E and A from B and F
respectively) during the transient position. This would be advantageous if the work ports are connected to
cylinders holding a load. Unused ports open spool allows the non active ports to be common, this would
allow a motor to free wheel when it is connected to the non active ports. Please note that spool types (A, B,
and C in model code) can be used with all four spool operators and spool types, (F and G in model code)
can only be used with spool operators (E, in model code).
SPOOL OPERATOR – Electric operator (E, in model code) shifts spool using electromagnetic force and
does not require any extra pilot or tank lines. Enclosed lever handle (L, in model code) provides smooth
shifting of spool while protecting spool from contaminants. Pilot (P, in model code) allows the spool to be
shifted hydraulically from a remote location, 150 psi pilot pressure (air or hydraulic) required to shift spool.
Knob (K, in model code) is an inexpensive way to easily push and pull the spool to each position.
COIL VOLTAGE – We offer 12 volt DC (1, in model code), 24 volt DC (2, in model code) or 120 volt
AC (3, in model code) for spool operator (E, in model code).
SPOOL ACTION – Spring offset (S, in model code) can be used with all spool operators. Two position
detent (D, in model code) can only be used with spool operator (L and K, in model code).
DRAIN – Drain type is only specified when spool operator (E, in model code) is used. Internal drain (N, in
model code) drains any spool leakage to the lower pressure port via spool leakage. External drain (X, in
model code) drains spool leakage externally to tank from a #4SAE port. An externally drained valve is
rated to a higher pressure than the internally drained valve.
TERMINAL – Terminal is only specified when spool operator (E, in model code) is used. Both coils
come standard with a Deutsch connector (DT04-2P). Wire leads (T, in model code) is a mating Deutsch
connector with flying leads. Deutsch to female weather pack (V, in model code) is a mating Deutsch
connector to female shroud with male pin. Deutsch to male weather pack (W, in model code) is a mating
Deutsch connector to male tower with female pin. Do not specify terminal when using spool operator (L, P
and K, in model code).
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