Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
⌕
RFQ CartGet a QuoteSign inSign up
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports - ARO Alpha Series Pilot-Operated Inline Air Control Valves
AROARO Alpha Series Pilot-Operated Inline Air Control Valves

ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports

The ARO Alpha Series Pilot-Operated Inline Air Control Valve (SKU 2F957, MPN A211PS) is a four-way, two-position spool valve with five ports and a 1/8 in female NPT pilot connection. It features a spring return…

SKU 3G-OTH-159701

Brand
ARO
Item
Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports
Category
ARO Alpha Series Pilot-Operated Inline Air Control Valves
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

ARO
Manufacturer Part Number
A211PS
Type
Four-Way / Two-Position
Ports
5
Female NPT Pilot
1/8 in
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

ARO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The ARO Alpha Series Pilot-Operated Inline Air Control Valve (SKU 2F957, MPN A211PS) is a four-way, two-position spool valve with five ports and a 1/8 in female NPT pilot connection. It features a spring return mechanism and is normally open. This valve is designed for pneumatic control applications requiring reliable directional air flow.

Used in

Common applications for ARO
Chemical processing — ARO AODD pumps with PTFE diaphragms and check valves for transferring corrosive acids and solvents.
Wastewater treatment — ARO aluminum-housing AODD pumps handling sludge and abrasive slurries in treatment plants.
Packaging automation — ARO PremAir series solenoid valves controlling pneumatic actuators on filling and sealing machines.
Mining operations — ARO 316 stainless steel AODD pumps for dewatering and transferring abrasive mine tailings.
Material handling — ARO MaxAir series foot pedal valves for manual control of conveyor diverters and lift tables.
Maintenance repair — ARO repair kits for field servicing of lower pump assemblies in industrial fluid systems.

ARO Products

3G Electric supplies ARO aro alpha series pilot-operated inline air control valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
ARO Pilot Air Control Valve: K Series, Four-Way / Two-Position, 5 Ports, 3/8 in Female NPT Pilot (MPN K213PS). Key specifications — attr1086823: K213PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO
ARO Pilot Air Control Valve: K Series, Four-Way / Two-Position, 5 Ports, 3/8 in Female NPT Pilot (MPN K213PS). Key specifications — attr1086823: K213PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO Pilot Air Control Valve: E Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN E212PS). Key specifications — attr1086823: E212PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO
ARO Pilot Air Control Valve: E Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN E212PS). Key specifications — attr1086823: E212PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 1/8 in Female NPT, 10-32 Female NPT (MPN A211SD-000-N). Key specifications — attr1092969: Non-Locking; attr1086920: A211SD-000-N; attr1092977: Solenoid Return.
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 1/8 in Female NPT, 10-32 Female NPT (MPN A211SD-000-N). Key specifications — attr1092969: Non-Locking; attr1086920: A211SD-000-N; attr1092977: Solenoid Return.
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 1/8 in Female NPT, 10-32 Female NPT (MPN A211SS-000-N). Key specifications — attr1092969: Non-Locking; attr1086920: A211SS-000-N; attr1092977: Spring Return.
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 1/8 in Female NPT, 10-32 Female NPT (MPN A211SS-000-N). Key specifications — attr1092969: Non-Locking; attr1086920: A211SS-000-N; attr1092977: Spring Return.

More from ARO

View all ARO parts →
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN A212PS). Key specifications — attr1086823: A212PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN A212PS). Key specifications — attr1086823: A212PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN A222PS). Key specifications — attr1086823: A222PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN A222PS). Key specifications — attr1086823: A222PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 3/8 in Female NPT Pilot (MPN A213PS). Key specifications — attr1086823: A213PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 3/8 in Female NPT Pilot (MPN A213PS). Key specifications — attr1086823: A213PS; attr1086857: Spring Return; attr1086869: Spool; attr1086865: Normally Open.
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN A212PD). Key specifications — attr1086823: A212PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open.
ARO
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN A212PD). Key specifications — attr1086823: A212PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open.
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 3/8 in Female NPT Pilot (MPN A213PD). Key specifications — attr1086823: A213PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open.
ARO
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 3/8 in Female NPT Pilot (MPN A213PD). Key specifications — attr1086823: A213PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open.
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/8 in Female NPT Pilot (MPN A211PD). Key specifications — attr1086823: A211PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open.
ARO
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/8 in Female NPT Pilot (MPN A211PD). Key specifications — attr1086823: A211PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open.
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Three-Position, 5 Ports, Remote Pilot, Closed (MPN A312PD). Key specifications — attr1086823: A312PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open; attr1086828: Closed.
ARO
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Three-Position, 5 Ports, Remote Pilot, Closed (MPN A312PD). Key specifications — attr1086823: A312PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open; attr1086828: Closed.
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN A222PD). Key specifications — attr1086823: A222PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open.
ARO
ARO Pilot Air Control Valve: Alpha Series, Four-Way / Two-Position, 5 Ports, 1/4 in Female NPT Pilot (MPN A222PD). Key specifications — attr1086823: A222PD; attr1086857: Pilot Return; attr1086869: Spool; attr1086865: Normally Open.