BODY PORTED VALVES
STACKING VALVES
Thin Manifold Valves
Sub BaseValves

Body-Ported Valves

ARO’s Alpha Body-Ported Valves are high-performance 4-way directional control valves engineered for direct piping applications — eliminating the need for separate manifolds or sub-bases. Designed for versatility and reliability, these valves are available in two-position, three-position, and four-position configurations, with port sizes of 1/8", 1/4", and 3/8".Built to deliver consistent flow control and simplified installation, ARO Alpha valves are the ideal choice for pneumatic systems demanding durability, efficiency, and easy maintenance.

Solenoid Valves

1/8"1/4"3/8"
A211SS-000-NA212SS-000-NA213SD-000-N
A211SS-012-DA212SS-012-DA213SD-012-D
A211SS-024-DA212SS-024-DA213SD-024-D
A211SS-120-AA212SS-120-AA213SD-120-A
2 positionA211SD-000-NA212SD-000-NA213SS-000-N
A211SD-012-DA212SD-012-DA213SS-012-D
A211SD-024-DA212SD-024-DA213SS-024-D
A211SD-120-AA212SD-120-AA213SS-120-A
 
A311SD-120-AA312SD-012-DA313SD-024-D
A312SD-024-DA313SD-120-A
3 positionA312SD-120-AA313SD-000-N
A312SD-000-N

Pilot Operated Valves

1/8"1/4"3/8"
A211PSA212PSA213PS
2 positionA211PDA212PDA213PD
 
3 positionA311PDA312PDA313PD
Brochure

Stacking Valves

"The Alpha Stacking Valve delivers a compact, cost-efficient solution by eliminating the need for a separate manifold. Its innovative flip-out design enables quick valve replacement without disassembly, ensuring minimal downtime. With flow rates from 39 to 63 SCFM, the Alpha Series offers reliable, high-performance operation for a wide range of pneumatic applications.Available in two- and three-position models, the Alpha Valve features a zinc body, end plate, and manifold for superior durability and is backed by a 5-year warranty. Its precision-ground bonded spool ensures smooth shifting and long service life, while large air passages provide exceptional flow. Five control options—Solenoid/Spring, Solenoid/Solenoid, Solenoid/Pilot, Pilot/Spring, and Pilot/Pilot—make it adaptable to virtually any control system."

Solenoid Valves

1/8"1/4"3/8"
A221SS-000-NA221SS-000-NA223SD-000-N
A221SS-012-DA222SS-012-DA222SD-012-D
A221SS-024-DA222SS-024-DA222SD-024-D
A221SS-120-AA222SS-120-AA222SD-120-A
2 positionA221SD-000-NA2212D-000-NA221SS-000-N
A221SD-012-DA222SD-012-DA223SS-012-D
A221SD-024-DA222SD-024-DA223SS-024-D
A221SD-120-AA222SD-120-AA222SS-120-A
 
A322SD-000-N
A322SD-012-D
3 positionA322SD-024-D
A322SD-120-A

Pilot Operated Valves

1/8"1/4"3/8"
A222PS
2 positionA222PD
 
3 positionA322PD
Brochure

Thin Manifold Valves

The ARO Alpha Thin Manifold Valve is a compact, high-performance pneumatic valve designed for space-saving, efficient installations. Its one-piece manifold eliminates extra plumbing, reducing leak points and assembly time while delivering flow rates up to 39 SCFM. Available in two- and three-position configurations, it offers versatile control options for automation, packaging, and OEM applications.Built with a durable zinc body and precision-ground spool, the Alpha Thin Valve ensures long-lasting reliability and easy maintenance. Its modular design supports multiple valve stations in a slim 1-inch profile, making it an ideal solution for high-performance pneumatic systems where space, efficiency, and dependability matter most.

Solenoid Valves

   
2 positionA249SD-000-NA249SD-024-DA249SD-120-A
    
3 positionA349SD-000-NA349SD-012-DA349SD-024-D
 A349SD-120-A

Pilot Operated Valves

   
2 positionA249PDA249PSA249SP-000-N
 A249SP-120-A
    
3 positionA349PD
Brochure

Sub Base valves

The Alpha Sub-Base Valve offers a versatile and service-friendly solution for pneumatic systems. With port sizes available in 1/8″, 1/4″, 3/8″ and 1/2″ and rated flows of 43–57 SCFM, it accommodates a wide range of applications. The body, end plate and manifold are made of zinc alloy, while the precision-ground spool design resists wear and ensures consistent shifting performance over time. arozone.com In terms of control flexibility, this valve stands out by offering five different actuation methods — including solenoid/spring, solenoid/solenoid, solenoid/pilot, pilot/spring and pilot/pilot configurations — along with an optional external solenoid supply for vacuum or low-pressure use. Additionally, the removable design (just three screws to remove the valve from its base) simplifies maintenance and replacement, supporting efficient downtime management.

Solenoid Valves

   
2 positionA239SS-000-NA239SS-012-DA239SS-024-D
 A239SS-120-AA239SD-000-NA239SD-012-D
 A239SD-024-DA239SD-120-A
    
3 positionA339SD-000-NA339SD-120-A

Pilot Operated Valves

   
2 positionA239SP-000-NA239PSA239PD
    
3 positionA339PD
Brochure