What is the opening force required for these valves

It isn't very much. I used one to replace the check valve in my door drain in my walk-in tub which would only have at worst a 3 -4 inches of standing water in the tube and It allowed the water to pass.

Will this work if tubing is laid sideways?

Yes it will work in any position.

Where do I put this on a portable a/c condensation line. Close to the unit or down the line further. It will be on a 10 ft clear flexible tubing?

If you using a condensate pump put it as close to the pump as you can. If you not using a pump and using gravity draining you don't need it.

Can this be used on a submersible 600gph water pump for the basement?

Check valves of this size are meant for use in smaller capacity pumps such as condensate pumps for air conditioners or dehumidifiers. Not for basement pumps.

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Quickun 3/8" Barb Hose One Way Inline Check Valve Non Return Ozone Resistance PVDF Plastic One-Way Fuel Oil Water Gas Pump Air Check Valve, 2 Pcs

Quickun 3/8" Barb Hose One Way Inline Check Valve Non Return Ozone Resistance PVDF Plastic One-Way Fuel Oil Water Gas Pump Air Check Valve, 2 Pcs

Product ID: 750992988

Details

Brand
Quickun
Exterior finish
Plastic Rubber
Inlet connection size
0.38 Inches
Inlet connection type
Barb
Manufacturer
Quickun
Material
Plastic Rubber

🔥operates up to 135°C high-temp resistant

⚙️3/8" barb fits standard hoses

🛡️PVDF shell resists acid, alkali & salt corrosion

€ 32.88

Duties & taxes included

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Description

🚀 Lock in flawless flow with Quickun’s high-temp, corrosion-proof check valve!

BUILT TO WITHSTAND HEAT - Reliable performance from 25°C up to 135°C protects your system even in extreme conditions.
PRECISION FIT ZERO SLIP - Pagoda card slot design ensures airtight, non-slip hose connection for hassle-free installation.
CORROSION PROOF DURABILITY - PVDF plastic shell and silicon rubber diaphragm resist acid, alkali, and salt corrosion for long-lasting use.
EFFORTLESS DIRECTION CONTROL - Integrated gas flow arrows eliminate guesswork and prevent costly installation errors.
VERSATILE AUTOMOTIVE FLUID USE - Ideal for fuel, water, air, and gas systems—perfect for brake boosters, AC ducts, and more.

The Quickun 3/8" Barb Hose One Way Inline Check Valve features a durable PVDF plastic shell and silicon rubber diaphragm, designed to fit standard 3/8" hoses with a secure pagoda card slot. It reliably prevents reverse fluid or air flow in automotive and fluid systems, operating efficiently between 25°C and 135°C while resisting acid, alkali, and salt corrosion. This compact 43mm valve simplifies installation with clear flow direction indicators, making it a versatile, high-performance solution for fuel, water, gas, and pneumatic applications.

Specifications

ASIN	B087PDJ82Z
Brand	Quickun
Connector Type	Slip
Customer Reviews	4.1 4.1 out of 5 stars (928)
Exterior Finish	Plastic,Rubber
Inlet Connection Size	0.38 Inches
Inlet Connection Type	Barb
Manufacturer	Quickun
Material	Plastic, Rubber
Model Number	2.00
Number of Items	2
Number of Pieces	2
Number of Ports	1
Outlet Connection Type	Barb
Part Number	1-2130-valve-2new
Size	3/8"
Valve Type	Check Valve

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