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Parker Manual Air Control Valve: DirectAir 4, Four-Way / Three-Position, Lever - Parker Directair 4 Series Manual Air Control Valves
ParkerParker Directair 4 Series Manual Air Control Valves

Parker Manual Air Control Valve: DirectAir 4, Four-Way / Three-Position, Lever

The Parker DirectAir 4 Series Manual Air Control Valve (MPN 521831000) is a four-way, three-position, lever-operated spool valve with manual return. Constructed with an aluminum body, it features 1/4 in Female NPT…

SKU 3G-OTH-156704

Brand
Parker
Item
Manual Air Control Valve: DirectAir 4, Four-Way / Three-Position, Lever
Category
Parker Directair 4 Series Manual Air Control Valves
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Technical Specifications

Parker
Manufacturer Part Number
521831000
Type
Four-Way / Three-Position, Lever
Female NPT
1/4 in
View Full Spec Sheet

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

Product Description

The Parker DirectAir 4 Series Manual Air Control Valve (MPN 521831000) is a four-way, three-position, lever-operated spool valve with manual return. Constructed with an aluminum body, it features 1/4 in Female NPT ports and is designed for manual air control applications.

Frequently Asked Questions

What is the Parker DirectAir 4 manual air control valve used for?

The Parker DirectAir 4 manual air control valve is used to direct compressed air flow in pneumatic systems. Its four-way, three-position lever design with manual return suits industrial applications requiring precise manual control of actuators, cylinders, or other air-operated equipment.

What are the specifications of the Parker DirectAir 4 valve MPN 521831000?

The Parker DirectAir 4 valve (MPN 521831000) is a four-way, three-position lever-operated spool valve with manual return. It has an aluminum body and 1/4 in Female NPT ports. The center position is closed. It is part of the DirectAir 4 series for manual air control.

Where to buy the Parker DirectAir 4 valve in worldwide?

You can source the Parker DirectAir 4 valve (MPN 521831000) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install a Parker DirectAir 4 manual air control valve?

Mount the valve securely using the aluminum body's threaded ports. Apply thread sealant to 1/4 in Female NPT connections. Connect supply and exhaust lines per the four-way, three-position lever diagram. Test manual return function before pressurizing. Follow Parker's generic pneumatic valve installation guidelines.

Used in

Common applications for Parker
Injection molding machine proportional directional control — Parker solenoid coils and proportional valve cartridges for mold-closing and hydraulic actuation circuits
Construction equipment hydraulic steering and boom control — Parker directional control valves with solenoid actuation for excavator and loader hydraulic systems
Industrial press forming systems — Parker pressure-relief and proportional directional valves for tonnage control and cycle sequencing
Material-handling conveyor systems — Parker proportional control valves with solenoid pilot stages for smooth load acceleration and deceleration
Tire-building machinery — Parker solenoid-actuated directional cartridges for synchronized multi-axis hydraulic positioning
Forestry and mobile equipment — Parker valve spools and solenoid assemblies rated for harsh-environment hydraulic circuits and mobile-duty pressure cycling

Parker Products

3G Electric supplies Parker parker directair 4 series manual air control valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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