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Hexagonal galvanised steel bushing with male and female threaded ends

Anvil

Anvil 319905402 galvanised bushing 3/8 MNPT x 1/4 FNPT

SKU CH-3S4V-YVVVG

Galvanised steel bushing reduces 3/8-inch male NPT to 1/4-inch female NPT for Class 300 piping systems

  • Galvanised steel resists corrosion in water and gas lines
  • Class 300 rating handles 2000 psi at 150 °F for demanding systems
  • ASME 16.3 and ASTM A-197 compliance ensures code-accepted quality
  • Reduces 3/8 in MNPT to 1/4 in FNPT for flexible pipe connections
  • Operates from -20 °F to 150 °F across seasonal temperature swings

3/8 MNPT x 1/4 FNPT galvanised bushing

This Anvil pipe fitting connects a 3/8 inch male NPT thread to a 1/4 inch female NPT thread. The galvanised steel body meets ASME 16.3 and ASTM A-197 standards for general plumbing and industrial use. It is rated for 2000 psi water, oil and gas at 150 degrees Fahrenheit and 300 psi saturated steam.

Thread compatibility and pressure rating

Verify that both mating ports use NPT threads and that the system pressure stays within the 2000 psi WOG limit at 150 degrees Fahrenheit. Confirm the temperature range of minus 20 to 150 degrees Fahrenheit covers the intended service conditions. Ensure the Class 300 schedule matches the surrounding piping specification.

Installers needing a reducing bushing

This suits technicians joining dissimilar NPT sizes in water, oil, gas or low-pressure steam lines up to the rated limits. It is not for systems exceeding 2000 psi WOG or 300 psi steam. Buyers who need a different thread type, larger reduction step or higher temperature rating should look at other fittings.

Highlights

  • Galvanised steel resists corrosion in water and gas lines
  • Class 300 rating handles 2000 psi at 150 °F for demanding systems
  • ASME 16.3 and ASTM A-197 compliance ensures code-accepted quality
  • Reduces 3/8 in MNPT to 1/4 in FNPT for flexible pipe connections
  • Operates from -20 °F to 150 °F across seasonal temperature swings

Specifications

BrandANVIL

Questions about this item

Does the Anvil 319905402 bushing come with thread sealant or do I need to buy it separately?

The fitting is supplied alone; thread sealant or tape must be purchased separately.

The listing shows Class 300 and 2000 psi — which rating should I use for my system?

Class 300 defines the fitting geometry; the 2000 psi WOG rating at 150 °F is the working pressure limit for water, oil or gas.

Will the 2000 psi rating hold if the line sees saturated steam?

No — saturated steam service is limited to 300 psi per the ASME 16.3 and ASTM A-197 standards.

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