We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 1/4 in Female NPT - ARO Alpha Series Solenoid-Operated Inline Air Control Valves
AROARO Alpha Series Solenoid-Operated Inline Air Control Valves

ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 1/4 in Female NPT

The ARO Alpha Series Solenoid-Operated Inline Air Control Valve (SKU 3G-OTH-149786, MPN A312SD-000-N) is a four-way, three-position valve with 1/4 in Female NPT ports. It features a double solenoid with solenoid…

SKU 3G-OTH-149786

Also listed as: A312SD000N · A312SD 000 N

Brand
ARO
Item
Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 1/4 in Female NPT
Category
ARO Alpha Series Solenoid-Operated Inline Air Control Valves
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

ARO
Manufacturer Part Number
A312SD-000-N
Type
Four-Way / Three-Position, Double Solenoid
Female NPT
1/4 in

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 Solenoid-Operated Inline Air Control Valve (SKU 3G-OTH-149786, MPN A312SD-000-N) is a four-way, three-position valve with 1/4 in Female NPT ports. It features a double solenoid with solenoid return, a closed center position, and non-locking manual override.

Frequently Asked Questions

What is the ARO Alpha Series solenoid air control valve used for?

The ARO Alpha Series solenoid-operated inline air control valve is used to direct compressed air in industrial automation, packaging, and material handling systems. Its four-way, three-position design with a closed center allows precise control of double-acting pneumatic actuators, stopping and holding cylinder position when de-energized.

What are the specifications of the ARO A312SD-000-N valve?

The ARO A312SD-000-N is a four-way, three-position double solenoid valve with 1/4 in female NPT ports. It features a closed center position, solenoid return, and non-locking manual override. This Alpha Series valve is designed for inline mounting and operates with compressed air.

Where to buy the ARO A312SD-000-N valve worldwide?

You can source the ARO A312SD-000-N valve worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine ARO pneumatic components to customers internationally.

How to install the ARO Alpha Series solenoid valve?

Install the ARO Alpha Series valve by connecting 1/4 in female NPT ports to your pneumatic lines. Ensure the solenoid coil voltage matches your supply. Mount the valve inline with the flow direction arrow aligned. Use non-locking manual override for testing. Follow standard pneumatic installation practices for leak-free connections.

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 solenoid-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

Compatible alternatives & equivalents

Cross-referenced by specification & description
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 120V AC, 1/4 in Female NPT, Closed (MPN A312SD-120-A)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 120V AC, 1/4 in Female NPT, Closed (MPN A312SD-120-A)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 1/4 in Female NPT, Double Solenoid (MPN A712SD-000-N)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 1/4 in Female NPT, Double Solenoid (MPN A712SD-000-N)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 120V AC, 1/4 in Female NPT (MPN A712SD-120-A)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 120V AC, 1/4 in Female NPT (MPN A712SD-120-A)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 120V AC, 1/4 in Female NPT, Closed (MPN A322SD-120-A)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 120V AC, 1/4 in Female NPT, Closed (MPN A322SD-120-A)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 120V AC, 1/8 in Female NPT, 150 psi (MPN A249SD-000-N)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 120V AC, 1/8 in Female NPT, 150 psi (MPN A249SD-000-N)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 12V DC, 1/4 in Female NPT, 150 psi (MPN A249SS-012-D)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 12V DC, 1/4 in Female NPT, 150 psi (MPN A249SS-012-D)

More from ARO

View all ARO parts
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 12V DC, 1/4 in Female NPT, Closed (MPN A312SD-012-D)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 12V DC, 1/4 in Female NPT, Closed (MPN A312SD-012-D)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 12V DC, 1/4 in Female NPT, 150 psi (MPN A212SD-012-D)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 12V DC, 1/4 in Female NPT, 150 psi (MPN A212SD-012-D)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 120V AC, 1/4 in Female NPTF (MPN A422SS-120-A)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 120V AC, 1/4 in Female NPTF (MPN A422SS-120-A)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 120V AC, 1/8 in Female NPT, 150 psi (MPN A211SD-120-A)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 120V AC, 1/8 in Female NPT, 150 psi (MPN A211SD-120-A)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 12V DC, 1/8 in Female NPT, 150 psi (MPN A211SS-012-D)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 12V DC, 1/8 in Female NPT, 150 psi (MPN A211SS-012-D)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 24V DC, 1/4 in Female NPT, 150 psi (MPN A212SD-024-D)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 24V DC, 1/4 in Female NPT, 150 psi (MPN A212SD-024-D)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 24V AC, 1/4 in Female NPT, Exhaust (MPN A912SD-024-A)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Two-Position, 24V AC, 1/4 in Female NPT, Exhaust (MPN A912SD-024-A)
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 120V AC, 1/4 in Female NPT, Closed (MPN A349SD-120-A)
ARO
ARO Solenoid Air Control Valve: Alpha, Four-Way / Three-Position, 120V AC, 1/4 in Female NPT, Closed (MPN A349SD-120-A)