We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

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
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 — 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
521831000
Type
Four-Way / Three-Position, Lever
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

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.

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 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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Three-Position, Lever, 1/4 in Female NPT (MPN 529831000)
Parker
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Three-Position, Lever, 1/4 in Female NPT (MPN 529831000)
PARKER Manual Air Control Valve: DirectAir 4, Three-Way / Two-Position, Lever, 1/4 in Female NPT (MPN 524811000)
Parker
PARKER Manual Air Control Valve: DirectAir 4, Three-Way / Two-Position, Lever, 1/4 in Female NPT (MPN 524811000)
PARKER Manual Air Control Valve: DirectAir 4, Three-Way / Three-Position, Lever, 1/4 in Female NPT (MPN 523831000)
Parker
PARKER Manual Air Control Valve: DirectAir 4, Three-Way / Three-Position, Lever, 1/4 in Female NPT (MPN 523831000)
PARKER Manual Air Control Valve: DirectAir 4, Three-Way / Two-Position, Lever, 1/4 in Female NPT (MPN 524831000)
Parker
PARKER Manual Air Control Valve: DirectAir 4, Three-Way / Two-Position, Lever, 1/4 in Female NPT (MPN 524831000)
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Two-Position, Roller, 1/4 in Female NPT (MPN 520211000)
Parker
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Two-Position, Roller, 1/4 in Female NPT (MPN 520211000)
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Two-Position, Roller, 1/4 in Female NPT (MPN 520A11000)
Parker
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Two-Position, Roller, 1/4 in Female NPT (MPN 520A11000)

More from Parker

View all Parker parts
Four-way, two-position spool valve with spring return and lever actuation. Aluminum body with 1/4-inch female NPT ports. Used in pneumatic systems to direct compressed air flow to actuators, cylinders, or tools
Parker
Four-way, two-position spool valve with spring return and lever actuation. Aluminum body with 1/4-inch female NPT ports. Used in pneumatic systems to direct compressed air flow to actuators, cylinders, or tools
Four-way, three-position lever-actuated spool valve with spring return. 1/4 in female NPT ports. Aluminum body. Used for directional control of pneumatic actuators and cylinders in industrial automation and material handling systems
Parker
Four-way, three-position lever-actuated spool valve with spring return. 1/4 in female NPT ports. Aluminum body. Used for directional control of pneumatic actuators and cylinders in industrial automation and material handling systems
Three-way/two-position manual air control valve with foot pedal actuation and spool design. Constructed with an aluminum body. Normally closed operation with manual return. Used in pneumatic systems to direct or block compressed air flow for applications such as machine cycling or clamping
Parker
Three-way/two-position manual air control valve with foot pedal actuation and spool design. Constructed with an aluminum body. Normally closed operation with manual return. Used in pneumatic systems to direct or block compressed air flow for applications such as machine cycling or clamping
This manual air control valve features a four-way, three-position spool design with manual return. It is operated by a lever and has 1/4-inch female NPT ports. The valve is used to direct compressed air flow in pneumatic systems, such as controlling double-acting cylinders or other actuators
Parker
This manual air control valve features a four-way, three-position spool design with manual return. It is operated by a lever and has 1/4-inch female NPT ports. The valve is used to direct compressed air flow in pneumatic systems, such as controlling double-acting cylinders or other actuators
Four-way, three-position spool valve with spring return and lever actuator. Ports: 1/4 in female NPT. Used in pneumatic systems to direct airflow for actuating cylinders or tools, including exhaust functions
Parker
Four-way, three-position spool valve with spring return and lever actuator. Ports: 1/4 in female NPT. Used in pneumatic systems to direct airflow for actuating cylinders or tools, including exhaust functions
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Two-Position, Foot Pedal, 1/4 in Female NPT (MPN 520931000)
Parker
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Two-Position, Foot Pedal, 1/4 in Female NPT (MPN 520931000)
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Two-Position, Lever, 1/4 in Female NPT (MPN 520831000)
Parker
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Two-Position, Lever, 1/4 in Female NPT (MPN 520831000)
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Three-Position, Lever, 1/4 in Female NPT (MPN 521811000)
Parker
PARKER Manual Air Control Valve: DirectAir 4, Four-Way / Three-Position, Lever, 1/4 in Female NPT (MPN 521811000)