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

Product ID: 369434493

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" x 1/8" NPT female threads

🛡️Durable CA360/CA377 brass SAE standard

₩42724

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Description

🔧 Connect with Confidence — The Brass Standard in Pipe Fittings!

TEMPERATURE TOUGH - Operates reliably from -53°C to 121°C (-65°F to 250°F), perfect for versatile industrial environments.
BUILT TO WITHSTAND - Engineered for up to 1200psi pressure—outperforming typical fittings for demanding applications.
PRECISION THREAD FIT - Dual female NPT threads ensure leak-tight, secure pipe connections across different sizes.
TRUSTED QUALITY PACK - Includes 2 robust couplings, backed by a 4.6-star rating from 450+ professionals.
PREMIUM BRASS CONSTRUCTION - Crafted from SAE-standard CA360/CA377 brass for superior corrosion resistance and strength.

The Legines NPT Reducing Coupling is a high-performance brass pipe fitting featuring 1/4" and 1/8" female NPT threads for secure, leak-resistant connections between different pipe sizes. Made from premium CA360/CA377 brass and meeting SAE standards, it withstands pressures up to 1200psi and temperatures from -53°C to 121°C, making it ideal for demanding industrial and plumbing applications. Sold in packs of two, this coupling combines durability, precision, and trusted quality for professional-grade installations.

Specifications

ASIN	B07486QJKK
ASIN	B07486QJKK
Best Sellers Rank	#126,642 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #937 in Industrial Pipe Fittings
Brand Name	Legines
Color	Brass
Connector Type	Coupling
Customer Reviews	4.6 4.6 out of 5 stars (450)
Customer reviews	4.6 4.6 out of 5 stars (450)
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
Manufacturer Part Number	3300*BA
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

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₩42724

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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