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: 216534139

Details

Brand
Quickun
Exterior Finish
Plastic Rubber
Inlet Connection Size
0.38 inches
Inlet Connection Type
Barb
Material
Plastic Rubber
Number of Ports
1

🔄One-way flow prevents backflow

🌡️Operates reliably 25°C-60°C

🛡️PVDF shell resists harsh chemicals

NZ$22

Duties & taxes included

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Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Stop backflow before it starts — flow forward with confidence!

COMPACT EFFICIENT DESIGN - At just 43mm (1.69 inches) in length, it fits seamlessly into tight spaces without compromising performance.
CORROSION PROOF DURABILITY - PVDF plastic shell and silicon diaphragm ensure unbeatable resistance to acid, alkali, and salt corrosion for long-lasting performance.
TRUSTED INDUSTRIAL STANDARD - Meets ASME B16.5 specs and ranks top 10 in check valves, backed by 1,000+ positive reviews—join the pros who rely on Quickun.
PRECISION FIT FOR 3 8 HOSES - Designed with a 3/8" barb diameter, it guarantees a secure, leak-free connection with standard hoses.
RELIABLE ONE WAY FLOW CONTROL - Prevents costly backflow in fuel, water, gas, and air systems, protecting your equipment and workflow.

The Quickun 3/8" Barb Hose One Way Inline Check Valve features a chemically resistant PVDF plastic shell and silicon rubber diaphragm, designed for secure 3/8" hose connections. Operating reliably between 25°C and 60°C, it prevents reverse flow in fluid and pneumatic systems, making it ideal for fuel, water, gas, and air applications. Compact at 43mm length and compliant with ASME B16.5 standards, this valve is a top-rated industrial choice trusted by professionals.

Specifications

ASIN	B087PDJ82Z
Best Sellers Rank	#17,930 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Check Valves
Brand Name	Quickun
Connector Type	Slip
Customer Reviews	4.1 4.1 out of 5 stars (1,034)
Exterior Finish	Plastic,Rubber
Inlet Connection Size	0.38 inches
Inlet Connection Type	Barb
Manufacturer	Quickun
Manufacturer Part Number	1-2130-valve-2new
Material Type	Plastic, Rubber
Model Number	2
Number of Items	2
Number of Pieces	2
Number of Ports	1
Outlet Connection Size	0.38 inches
Outlet Connection Type	Barb
Size	3/8 Inch
Specification Met	ASME B16.5
Thread Size	3/8 inches
Unit Count	2 Count
Valve Type	check valve

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