I have to join tubing that is 5/16 id, 9/16 od that will carry co2 gas from a tank to a keg coupler. what size would be best?

Mostly depends on how soft the hose is and the pressure. Soft 5/16 hose will easily push onto a 3/8 barb.

Will this work with 3/4 polybutylene irrigation line?

No. These have an external dimension of 3/8. Measure the internal diameter of your tube and select a connector with that measurement.

Is this toxic? I want to use it for my fridge water

It's not toxic, has the NSF/ANSI 61 standard. Safe for potable water.

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Tefen - 12256208003 Nylon 66 Hose Fitting, Coupling, Gray, 1/2" Hose ID (Pack of 10)

Product ID: 28264949

Details

Brand
Tefen
Color
Gray
Connector Type
Hose Id
Exterior Finish
Brass
Item Weight
13.61 g
Item dimensions L x W x H
4 x 3.1 x 1.1

⚙️200 psi max pressure

🌡️-5 to +230°F temp range

🛡️Nylon 6/6 corrosion resistant

₱3280

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Sold byAmazon PhilippinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔗 Connect with Confidence — The Ultimate Hose Coupling Upgrade

PACK OF 10 CONVENIENCE - Bulk pack designed for professionals who value efficiency and readiness on every project.
INDUSTRIAL GRADE STRENGTH - Engineered from durable Nylon 6/6 for unmatched lightweight toughness and chemical resistance.
CERTIFIED SAFETY ASSURANCE - Meets NSF/ANSI 61 standards, guaranteeing safe use in potable water systems.
PRESSURE READY PERFORMANCE - Handles up to 200 psi, ensuring reliable operation under demanding conditions.
WIDE TEMPERATURE TOLERANCE - Operates flawlessly from -5°F to 230°F, perfect for versatile environments.

The Tefen Nylon 66 Hose Fitting is a high-performance, gray nylon coupling designed to connect two hoses securely with barbed ends. Built to withstand pressures up to 200 psi and temperatures ranging from -5°F to 230°F, it offers exceptional chemical resistance and durability. Certified to NSF/ANSI 61 standards, this pack of 10 fittings is ideal for industrial and domestic applications requiring reliable, corrosion-resistant hose connections.

Specifications

ASIN	B006OGAIAG
Best Sellers Rank	#683,195 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2,219 in Barbed Hose Fittings
Brand	Tefen
Brand Name	Tefen
Color	Gray
Connector Type	Hose Id
Customer Reviews	4.6 out of 5 stars 326 Reviews
Exterior Finish	Brass
Item Dimensions	4 x 3.1 x 1.1 inches
Item Weight	13.61 g
Item dimensions L x W x H	4 x 3.1 x 1.1 inches
Manufacturer	Seelye Acquisitions
Manufacturer Part Number	12256208003
Material	Nylon
Material Type	Nylon
Model Number	12256208003
Number of Pieces	10
Size	0.5 Inch
Thread Type	NPT
Unit Count	10 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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₱3280

Duties & taxes included

In stock

Sold byAmazon PhilippinesDelivered 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 Philippines.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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