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Red aluminum 3-way manual air valve toggle 1/8 NPT

Aro

Aro M251LS 3-Way 1/8in NPT Manual Air Control Valve

SKU CH-YGAG-SGZ5G

A three-way toggle valve with 1/8 in NPT ports delivers 7 cfm at up to 150 psi in an aluminium body

  • MaterialHAWA
  • 3-way valve directs airflow between two ports
  • Toggle actuator holds position without continuous pressure
  • 7 cfm flow capacity suits small pneumatic tools
  • 150 psi rating handles typical shop air pressure
  • Aluminum body resists corrosion in compressed air systems

Manual 3-Way Air Control Valve

The Aro M251LS is a 3-way, 2-position manual valve designed for compressed-air systems. It suits technicians who need simple on-off control of a single-acting cylinder or air tool. The toggle actuator stays in the selected position until moved again. It is not for applications requiring a centre neutral position or automatic spring return.

Operating Limits of the NPT Interface

The valve accepts 1/8 inch NPT connections and is rated for a maximum pressure of 150 psi. Flow capacity reaches 7 cfm with a Cv of .2. The aluminium body operates reliably between 32 and 160 degrees Fahrenheit. Systems demanding higher flow, higher pressure or a wider temperature range cannot use this valve.

Straightforward Installation Steps

The compact body measures 1 1/4 inch long, 2 1/4 inch high and 5/8 inch wide, fitting tight manifolds easily. Apply thread sealant to the NPT ports to prevent leaks, the most common issue. Ensure the supply pressure does not exceed 150 psi and that the media temperature stays within the stated range to avoid seal failure.

Highlights

  • 3-way valve directs airflow between two ports
  • Toggle actuator holds position without continuous pressure
  • 7 cfm flow capacity suits small pneumatic tools
  • 150 psi rating handles typical shop air pressure
  • Aluminum body resists corrosion in compressed air systems

Specifications

BrandARO
MaterialHAWA

Questions about this item

Should I pick the 1/8 in NPT version or look for a different port size?

This valve has a 1/8 in NPT port; choose it when your airline uses that thread, otherwise select a model with the matching port.

What does the 7 cfm rating mean when the valve is installed on my compressor?

At 150 psi the valve can pass up to 7 cfm, so it will not restrict tools or circuits that demand less flow.

How does the NPT connection limit the pressure I can run?

The NPT threads seal to the valve's 150 psi maximum; do not exceed that pressure regardless of the fitting type.

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