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 high operating pressure

🔥-53 to 121°C temperature range

🔩1/2" to 1/4" NPT female thread sizes

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₨14147

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Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Connect with Confidence, Seal with Style!

PRESSURE READY - Handles up to 1200psi—perfect for demanding industrial and professional plumbing applications.
THERMAL TOUGHNESS - Operates reliably from -53°C to 121°C, adapting to extreme temperature fluctuations without fail.
BUILT TO OUTPERFORM - Crafted from premium CA360/CA377 brass, delivering stainless steel strength with superior corrosion resistance.
DUAL PACK ADVANTAGE - Two couplings per pack to keep your projects moving without downtime or extra orders.
PRECISION FIT ZERO LEAK - Dryseal NPT threads ensure a tighter, corrosion-resistant seal for flawless pipe connections.

The Legines Brass Reducing Coupling 1/2" NPT Female x 1/4" NPT Female is a high-performance pipe fitting designed for seamless connection between different pipe sizes. Made from premium CA360/CA377 brass, it offers superior corrosion resistance and strength comparable to stainless steel. Featuring dryseal NPT threads for leak-proof connections, it withstands pressures up to 1200psi and operates across a wide temperature range (-53°C to 121°C). Sold in packs of two, it’s engineered for professional-grade plumbing reliability and durability.

Specifications

ASIN	B07487LP8X
Best Sellers Rank	#16,563 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #85 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 451 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

Reviews

K**R

Sturdy and good Fitting

Good quality, great for repairing my air compressor.

10.11.2025

A**N

Not what I have in mind

But not bad

20.12.2022

A**S

Excellent

Fonctionne bien 3/8 f et 1/4

27.10.2024

F**5

right fit good quality

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

T**J

Work as expected

Used these to attach a pair of ⅜ Binks ball valves to the ¼ feed of two air compressors.

7.06.2026

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