Does it need pipe tape on the threads for installation? Has anyone had an actuarial flashback and how did it do?

These type fittings are brass against brass and need to be tightened snugly to make them not leak. Use a light soapy solution to check for any bubbles that form in the soapy water. If bubbles appear , tighten a little more. Don't use teflon tape. The seal is not on the thread area, but in the brass "ball and socket" area of the fittings. These flash back arestors are for mounting on the tank, not at the torch. Avoid flashbacks at all costs. The can be fatal.

Are these arrestors UL approved?

I don’t believe these spark arrestors are UL approved. Nor do I think they would need UL approval. The design is simple, and they work. Cheap insurance. I wouldn’t crack open a bottle with out them.

The flow seems to be backwards on the arrestors I recieved. How to I fit to my torch?

Well ,they only install one way ,male and female fittings. If gas flows out your torch they are working correctly !

I bought a victor medalist 350 acetylene torch set. do i need a cga-510 to cga-300 adapter if i use this arrestor?

I used them on my standard size 9/16th ("B") regulators. Just buy the adapters at the same time to be sure. You can always return them if not needed!

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AGPtek Oxygen or Acetylene Flashback ARRESTORS Highest 9/16-18 Threads, B Size

AGPtek Oxygen or Acetylene Flashback ARRESTORS Highest 9/16-18 Threads, B Size

Product ID: 348611601

Details

Brand
AGPTEK
Exterior Finish
Brass
Item Weight
0.01 Ounces
Item dimensions L x W x H
5 x 2 x 10
Manufacturer
AGPtek
Net Quantity
1.0 Count

🔥Flashback arrestor safety tech

🔩9/16-18 precision threads

⚙️Universal B size compatibility

NT$686

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Description

🔥 Safety Meets Precision – Never Compromise on Protection! 🔩

VERSATILE GAS COMPATIBILITY - Works seamlessly with oxygen, acetylene, propane, and Mapp gas for all your welding needs.
ULTIMATE FLASHBACK PROTECTION - Advanced flashback arrestors prevent dangerous flame reversals, making your workspace safer.
COMPACT DURABLE BRASS FINISH - Small, lightweight design with corrosion-resistant brass exterior built to last in demanding environments.
EASY INSTALLATION AT REGULATOR - Quick to attach directly at the regulator, saving you time and hassle on setup.
PRECISION THREADING FOR SECURE FIT - Engineered with highest 9/16-18 threads ensuring leak-proof, reliable connections every time.

The AGPtek Oxygen or Acetylene Flashback Arrestor Set features high-quality 9/16-18 threaded B size fittings designed to prevent dangerous flashbacks in gas welding setups. Compatible with oxygen, acetylene, propane, and Mapp gas, this compact brass device installs easily at the regulator to ensure maximum safety and reliability during operation.

Specifications

ASIN	B014W698GY
Best Sellers Rank	#312,586 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #778 in Gas Stove Replacement Parts
Brand	AGPTEK
Brand Name	AGPTEK
Customer Reviews	4.5 out of 5 stars 1,609 Reviews
Exterior Finish	Brass
Item Dimensions	5 x 2 x 10 Centimeters
Item Weight	0.01 Ounces
Item dimensions L x W x H	5 x 2 x 10 Centimeters
Manufacturer	AGPtek
Manufacturer Part Number	iT0060
Model Number	iT0060
Number of Pieces	18
Size	Small
Thread Size	9/16-18
UPC	713382796989
Unit Count	1.0 Count

Reviews

م**ي

لا يفيد قليل الجوده

يوجد خلل مصنعي يخرج الهواء من الغطاء المكبوس ،!؟ جاري عملية الارجاع…

24.02.2023

T**D

Good price.

Work like they should.

20.10.2025

W**L

Easy to install

Works great

15.12.2025

G**Y

That it fits the description

Excellent product

30.08.2025

J**N

Oxicut

They look good quality, and they have fast delivery time I will buy again if need it

7.01.2026

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NT$686

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered 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 Taiwan.

Secure transaction

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