Can this item be used on a pressure washer with 3100psi ?

I would say this fitting would not be appropriate as the description does say it is good for operating pressures of up to 1200psi. There may be a brass version made heavier for use at higher pressure, or perhaps one made of stainless steel instead of brass. I am using it at very low pressure in a computer water cooling loop to adapt thread sizes where a smaller and lighter fitting was preferable for me. I would search for a fitting that states it is good for a 3100psi working pressure or higher, or you are taking a risk of serious injury should this fitting burst.

Which size fits a Schrader valve?

A Shrader valve is: 0.305" in OD, thread root diameter 0.302" in x 32 tpi (threads per inch). A Shrader valve is not a NPT thread. Try B09QMCF6BK.

Legines NPT Reducing Coupling Brass 1/4" Female x 1/8" Female, Hex Reducer Coupler Adapter Pipe Fitting 1200psi (Pack of 2)

Legines NPT Reducing Coupling Brass 1/4" Female x 1/8" Female, Hex Reducer Coupler Adapter Pipe Fitting 1200psi (Pack of 2)

Product ID: 369434493

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Details

Brand
Legines
Colour
Brass
Item dimensions L x W x H
10 x 10 x 10
Material
Brass
Size
1/4" NPT x NPT

💪1200psi high pressure rating

🔩1/4" & 1/8" NPT female threads

🌡️-53 to 121°C temperature range

Description

🔧 Connect with Confidence: The Brass Coupling That Means Business

PRESSURE READY DURABILITY - Engineered to withstand up to 1200psi, outperforming typical fittings for demanding industrial applications.
TRUSTED INDUSTRIAL CHOICE - Highly rated with 4.6 stars and a top 300 rank in pipe fittings—join thousands of pros upgrading their setups.
PREMIUM SAE STANDARD BRASS - Crafted from CA360/CA377 brass, offering stainless steel-level strength and superior corrosion resistance.
WIDE TEMPERATURE TOLERANCE - Reliable operation from -53°C to 121°C (-65°F to 250°F) ensures versatility across environments.
PRECISION DUAL SIZE CONNECTION - Seamlessly link 1/4" and 1/8" male pipes with secure NPT taper threads for leak-resistant performance.

The Legines NPT Reducing Coupling is a robust brass pipe fitting designed to connect 1/4" and 1/8" male NPT threaded pipes. Made from high-grade CA360/CA377 brass meeting SAE standards, it offers exceptional strength and corrosion resistance. Rated for pressures up to 1200psi and temperatures from -53°C to 121°C, this coupling ensures reliable, leak-resistant connections in demanding industrial and home applications. Sold in packs of two, it’s a trusted choice for professionals seeking durable, precision fittings.

Specifications

ASIN	B07486QJKK
ASIN	B07486QJKK
Best Sellers Rank	#48,629 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #255 in Industrial Pipe Fittings
Brand Name	Legines
Color	Brass
Connector Type	Coupling
Customer Reviews	4.6 4.6 out of 5 stars (444)
Customer reviews	4.6 4.6 out of 5 stars (444)
Date First Available	1 February 2018
Exterior Finish	Brass
Is Discontinued By Manufacturer	No
Item Dimensions	10 x 10 x 10 centimeters
Item model number	3300*BA
Manufacturer	Legines
Manufacturer	Legines
Material Type	Brass
Model Number	3300*BA
Number of Pieces	2
Product Dimensions	10 x 10 x 10 cm; 59 g
Size	1/4" NPT Female x 1/8" NPT Female
Thread Size	0.125 inches
Thread Type	NPT
Unit Count	2.0 Count

Reviews

K**R

Good quality, great for repairing my air compressor.

10.11.2025

A**N

But not bad

20.12.2022

A**S

Fonctionne bien 3/8 f et 1/4

27.10.2024

F**5

wanted to change a 1/2 air hose 1/2" npt male to 1/4-Inch NPT female Air Hose Quick Connect Adapter. Could not find something like this at any of the local hardware and plumbing stores

15.01.2024

K**N

It worked exactly what it was far

28.02.2026

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