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Brass needle valve with grey cast iron knob

Value Brand

Value Brand Needle Valve 1/2 NPT 500 psi Brass

SKU CH-ZZ11-45ZSK

Controls pneumatic flow up to 500 psi with 1/2 NPT brass body and cast-iron knob

  • Precise flow control with 1/2 in NPT ports
  • Handles up to 500 psi working pressure
  • Brass body resists corrosion in pneumatic systems
  • Operates up to 150 Degrees F maximum temperature
  • Gray cast iron knob for durable manual adjustment

Brass Needle Valve 1/2 NPT

This brass needle valve provides precise flow control for compressed air and vacuum lines. The 1/2 inch NPT ports suit standard industrial plumbing. A gray cast iron adjustment knob allows fine metering by hand. It is built for new installations or maintenance on existing pneumatic systems.

Pressure and temperature envelope

The valve is rated for a maximum working pressure of 500 psi. Operating temperature should not exceed 150 degrees Fahrenheit. These limits define the safe envelope for air or inert gas service. Exceeding either rating can cause leakage or body damage.

Brass body and cast iron knob

The brass body resists corrosion from moisture in compressed air lines. The gray cast iron knob withstands repeated adjustment without stripping. The 1/2 NPT threads seal with standard pipe tape or sealant. California Proposition 65 warnings apply because the product contains listed chemicals.

Highlights

  • Precise flow control with 1/2 in NPT ports
  • Handles up to 500 psi working pressure
  • Brass body resists corrosion in pneumatic systems
  • Operates up to 150 Degrees F maximum temperature
  • Gray cast iron knob for durable manual adjustment

Specifications

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Questions about this item

Should I pick the 1/2 in NPT 500 psi brass model or a different pressure rating?

This valve is specified at 500 psi maximum pressure with 1/2 in NPT ports; choose it when your system operates at or below that rating and matches the thread size.

What does the 500 psi rating mean once the valve is installed in my air line?

It indicates the valve can safely handle up to 500 psi working pressure in pneumatic service at temperatures up to 150 °F.

How does the 1/2 in NPT connection limit flow in practice?

The 1/2 in NPT male threads set the port size; actual flow will depend on your upstream pressure, downstream restriction and the needle position you set.

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