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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🔧 Lock in flow, lock out worry—your system’s silent guardian!

HEAT READY PERFORMANCE - Engineered to function flawlessly from 25°C up to 135°C, perfect for automotive and industrial fluid systems under pressure.
EFFORTLESS INSTALLATION - Clear directional flow indicators on the valve body eliminate guesswork, saving you time and avoiding costly installation errors.
PRECISION FIT ZERO SLIP - 3/8" barb design with pagoda card slot guarantees airtight, non-slip hose connections for leak-free performance every time.
CORROSION RESISTANT ARMOR - PVDF plastic shell and silicon rubber diaphragm ensure unbeatable resistance to acids, alkalis, and salts—built to last in harsh environments.
VERSATILE ONE WAY CONTROL - Ideal for fuel, oil, water, gas, and compressed air systems—prevents backflow and protects your equipment with trusted reliability.

The Quickun 3/8" Barb Hose One Way Inline Check Valve features a durable PVDF plastic shell and silicon rubber diaphragm, designed for superior chemical resistance and reliable operation between 25°C and 135°C. Its 3/8" barb fits standard hoses securely with a non-slip pagoda card slot design. Equipped with clear flow direction markings, this valve prevents reverse fluid or air flow in automotive and industrial systems, ensuring efficient and safe operation.

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Manufacturer	Quickun
Part Number	1-2130-valve-2new
Package Dimensions	5.69 x 3.71 x 1.9 cm; 9 g
Item model number	2.00
Size	3/8"
Material	Plastic, Rubber
Batteries included?	No
Batteries Required?	No
Item Weight	9 g

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

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