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Parker 520431000 manual air control valve, aluminum body, 1/4 NPT ports

Parker

Parker 520431000 4-Way 1/4 NPT Manual Air Control Valve

SKU CH-X8QP-G9R8R MPN 520431000

A 4-way manual air control valve with 1/4-inch NPT ports, 0.83 CFM flow and 150 psi rating

  • Product typeDrain Components
  • 4-way manual valve directs airflow precisely
  • 1/4 in NPT threads connect to standard piping
  • 150 psi rating handles demanding pneumatic systems
  • Aluminum body resists corrosion in harsh environments
  • Operates reliably from 32 to 175 degrees F

Parker 4-Way 1/4 NPT Manual Air Control Valve

The Parker 520431000 is a 4-way 2-position manual air control valve with a 1/4 inch NPT port. It suits pneumatic systems that need simple directional control of compressed air. The aluminum body handles a maximum pressure of 150 psi and an operating temperature range of 32 to 175 degrees F.

DirectAir 4 series button actuation

The valve uses a manual button actuator for direct operator control without electrical wiring or pilot pressure. Its coefficient of volume is 0.8 and maximum flow is .83 cfm, so it fits low-flow circuits. The DirectAir 4 series design keeps the overall length at 5 3/4 inches and height at 1 5/8 inches for tight mounting spaces.

Check port thread and pressure before ordering

Verify that your existing plumbing uses 1/4 inch NPT threads to match the valve ports. Confirm the system pressure does not exceed 150 psi and the media temperature stays within 32 to 175 degrees F. This valve has no center position, so it only switches between two discrete states.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $187.99
Pricier than about 84% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameParker
Model name520431000
Product typeDrain Components

Questions about this item

What maintenance will the aluminum body and manual button actuator need over time?

The aluminum body resists corrosion; periodically inspect the 1/4 NPT ports for debris and verify the button returns cleanly to maintain the 0.8 Cv flow.

Which limit appears first during continuous operation — the 150 psi pressure rating or the 175 °F temperature ceiling?

The 150 psi maximum pressure rating is the primary limit; the valve also handles up to 175 °F, so pressure typically governs first.

How much heat and noise does the valve generate when running all day at 0.83 cfm?

The valve has no moving parts that create heat or noise; only the compressed air flow produces sound, and body temperature follows the supply air up to 175 °F.

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