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.

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

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

Product ID: 310765454

Details

Size
1/2\" NPT x
Material
Brass
Brand
Legines
Colour
Brass
Item dimensions L x W x H
10 x 10 x 10

🔩1200psi max pressure

🧰Durable CA360/CA377 brass SAE standard

🛠️Dual NPT female threads 1/2" & 1/4"

3546 kr

Duties & taxes included

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Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Connect with confidence — the brass standard for pros!

PACK OF TWO - Double your efficiency with two high-quality couplings in one pack
PRECISION FIT - Dual female NPT threads (1/2" & 1/4") ensure leak-proof connections
TEMPERATURE TOUGH - Operates flawlessly from -53°C to 121°C (-65°F to 250°F), built for extremes
PREMIUM BRASS BUILD - Crafted from SAE-standard CA360/CA377 brass for corrosion resistance and strength
PRESSURE READY PERFORMANCE - Handles up to 1200psi for industrial-grade reliability

Legines Brass Reducing Coupling offers a robust solution for connecting mismatched pipe sizes with 1/2" and 1/4" female NPT threads. Made from premium CA360/CA377 brass meeting SAE standards, it withstands pressures up to 1200psi and extreme temperatures from -53°C to 121°C. Ideal for professional-grade plumbing and industrial applications, this pack of two ensures durable, corrosion-resistant, and leak-tight pipe connections.

Specifications

ASIN	B07487LP8X
Best Sellers Rank	#118,357 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #915 in Industrial Pipe Fittings
Brand	Legines
Brand Name	Legines
Color	Brass
Colour	Brass
Connector Type	Adapter, Coupling, Reducer
Connector type	Adapter, Coupling, Reducer
Customer Reviews	4.6 out of 5 stars 464 Reviews
Exterior Finish	Brass
Item Dimensions	10 x 10 x 10 centimeters
Item dimensions L x W x H	10 x 10 x 10 centimeters
Manufacturer	Legines
Manufacturer Part Number	3300*DB
Material	Brass
Material Type	Brass
Number of Pieces	2
Size	1/2\" NPT Female x 1/4\" NPT Female
Thread Size	1/2" NPT Female
Thread Type	NPT
Unit Count	2.0 Count

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