We offer highly cost-effective products and professional after-sale service for the marine, HVAC, water, oil & gas, fire fighting industries. Our valves, all delivered by experienced technicians, are of guaranteed good quality.
> Water > HVAC > Marine > Oil & Gas > Industry > Fire FightingWith years of experience, I-FLOW knows the market very well. We can provide excellent one-stop solutions for our clients. For more information about our valves and service, contact us today!
> CEO'S Greeting > Our factory > Career & culture > Fairs and eventsI-FLOW has an excellent R&D team. Managed strictly under ISO 9001, we inspect and test each of our valves to make sure 100% qualified.
> Research & Development > Quality Control > Quality Assurance > CertificatesWe, together with our associated companies, have obtained various types of certificates, including CE, WRAS, DNV, GL, LR, ABS etc. I-Flow valves are now widely used all over the world, in Shangrila Hotel, Kerry Center, Milan Expo, Fiat Workshop, IKEA, COSCO vessels, etc.
> Marine > HVAC > Water Treatment > Oil & GasAccumulating 10 years' experience in valves, we are an excellent solution provider. Keep in touch now and experience how your needs are well addressed.
> Client Stories > Our Projects > Company News > Industry NewsWith over 10 years of experience in the industry of valves, I-FLOW will provide the perfect solution for your project. Contact us now, we will solve all your problems.
> Download > After-sale Service > FAQs 
.png)
en |



We will contact you within 24 hours.
If you’ve ever needed to mix two flows, switch directions, or create a bypass line, a 3-way valve is likely the solution. But using it correctly is not just about installing it—it’s about knowing how it should behave inside your system.Let’s keep it simple.
Unlike standard valves that only open or close a single line, a 3-way valve controls multiple flow paths. This makes it extremely useful in systems that need flexibility without extra piping.

Switching Flow Direction
Need to send fluid to Line A or Line B?
Use a diverter-type (L-port) 3-way valve.
Common in:Cooling systems.Process line changeovers.Backup equipment routing
Mixing Hot & Cold Fluids
Want stable temperature control?
A T-port 3-way valve allows two flows to mix smoothly.
Common in:HVAC heating and cooling.Heat exchanger circuits
Creating a Bypass Line
Protect pumps or control pressure by allowing part of the flow to bypass.
Common in:Pump protection.Pressure stabilization loops
Always confirm whether your valve is L-port or T-port
Match the valve material to your medium
Check pressure and temperature limits
Don’t use standard 3-way valves for throttling unless designed for control
Using the wrong configuration can cause:Blocked flow.Unstable pressure.Poor temperature control.Premature valve wear
Using it correctly delivers:Better system efficiency.Fewer components.Lower maintenance costs