Understanding Part Numbers

AAA valves use a simplified model code which calls out the most important characteristics with a minimum of coding. In the example, model SY3G is a double solenoid valve, 3/8" size, spring centered spool, float center type.

The first two letters in the code (SY) designate the type of operator on the left and right ends respectively when viewing toward the side with the "A" and "B" ports. The numeral (3) gives valve size in 8ths of an inch. This completes the model code for many valves. If, however, additional features are desired, one or more suffix letters can be added.

Valve Operators Size Typical Options
C = Cam
E = Friction Position
F = Foot Pedal
G* = Direct Pilot
H = Manual Lever
K = Palm Button
O = Spring Offset
P = Piston
R = Pilot
S = Solenoid
T = Treadle
Y = Spring Centering
D (in 1st pos.) = Bleeder
D (in 2nd pos.) = Detent
2 = 1/4"
3 = 3/8"
4 = 1/2"
6 = 3/4"
8 = 1"
12 = 1-1/2"
16 = 2"
D = Regenerative Spool Type
G = Float Center Spool Type
P = Subplate Mounting
Q = 2-Position Detent
X = Explosion Proof Operator
Z = External Pilot Operation
Others Availible.
*Special prefix for 1-1/2" and 2" air valves to designate valve body only, without a piggy back operator.

All Solenoid Valves: We have changed our standard solenoid assembly to a new PLC friendly solenoid. To differentiate this style from our previous valves, please use a prefix of "E" to all new solenoid valves.

Stack Series Valves: B-Series valves are similar in construction to the 1/4" & 3/8" side ported valves. B-Series are only available in 1/4" & 3/8" NPTF port sizes. To order a 1/4" manual lever valve, spring return in a stack valve you would add the prefix "B" to the part number (i.e. BHO2).

Namur Series Valves: N-Series valves are similar in construction to the 1/4" & 3/8" side ported valves. N-Series are only available in 1/4" NPTF port sizes. To order a 1/4" solenoid valve, spring return in a Namur valve you would add the prefix "N" to the part number (i.e. NSO2).

Brass Valves: The prefix "Z" denotes a brass 1/4" or 3/8" side ported body.

Reversing Operators

The end actuators on most AAA soft seal valves can be changed from one end to the other to put the inlet port and cylinder ports on the desired side for convenience in plumbing. If actuators are desired on opposite ends of the valve from standard assembly, just reverse the valve operators in the valve model number when ordering (e.g. HO2 represents standard assembly. In comparison, OH2 has the handle switched to the opposite end - reverse build). Consult factory for infield modifications.
HO2 Valve
 HO2 Valve
HO2 Valve
OH2 Valve
 OH2 Valve
OH2 Valve