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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 521811000) is a four-way, three-position, spring-return spool valve with a lever actuator. Constructed with an aluminum body, this manual air control valve…

SKU 3G-OTH-156705

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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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Parker
Manufacturer Part Number
521811000
Type
Four-Way / Three-Position, Lever
Female NPT
1/4 in

Technical Documents

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

Product Description

The Parker DirectAir 4 Series Manual Air Control Valve (MPN 521811000) is a four-way, three-position, spring-return spool valve with a lever actuator. Constructed with an aluminum body, this manual air control valve features 1/4 in Female NPT ports and is designed for closed-center operation.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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 in pneumatic systems, typically for actuating cylinders or tools. Its four-way, three-position, spring-return design with closed center suits applications requiring precise manual control in industrial automation, packaging, and material handling.

What are the specifications of the Parker DirectAir 4 valve MPN 521811000?

The Parker DirectAir 4 valve (MPN 521811000) is a four-way, three-position, lever-actuated spool valve with spring return. It has an aluminum body and 1/4 in Female NPT ports. The closed-center configuration blocks all flow in the center position, making it suitable for locking pneumatic circuits.

Where to buy the Parker DirectAir 4 valve in worldwide?

You can source the Parker DirectAir 4 valve (MPN 521811000) 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; we supply genuine Parker components for pneumatic systems.

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

Install the Parker DirectAir 4 valve by connecting 1/4 in Female NPT ports to your pneumatic lines using appropriate fittings. Mount the aluminum body securely, ensure the lever moves freely, and verify the spring-return mechanism resets to the closed center. Follow standard pneumatic safety practices and consult the manufacturer's manual for torque specs.

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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