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!
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> 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.
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A shut-off valve is a fundamental component in fluid control systems, designed to completely stop or allow the flow of liquid or gas within a pipeline. Although simple in function, shut-off valves play a critical role in system safety, operational control, and maintenance efficiency across industrial, commercial, and residential applications.
The main purpose of a shut-off valve is flow isolation. By closing the valve, operators can immediately stop the movement of fluid to protect equipment, prevent leakage, or isolate a section of the system for servicing.
Shut-off valves are commonly used to:
Isolate pipelines during maintenance
Stop flow in emergency situations
Control system start-up and shutdown
Prevent fluid loss or contamination

1. System Safety
In the event of a leak, pipe rupture, or equipment failure, a shut-off valve allows rapid isolation, minimizing damage, environmental impact, and safety risks.
2. Maintenance Efficiency
Without shut-off valves, entire systems may need to be drained or shut down. Proper valve placement enables localized maintenance, reducing downtime and operational costs.
3. Equipment Protection
Shut-off valves protect downstream equipment such as pumps, meters, and control valves by allowing controlled start-up and preventing sudden flow surges.
4. Regulatory & Compliance Requirements
Many industries—including HVAC, water treatment, marine, oil & gas—require shut-off valves to meet safety standards and operational regulations.
Ball valves – Fast operation and tight sealing
Gate valves – Suitable for full open or full close service
Butterfly valves – Compact design for large-diameter pipelines
Globe valves – Used where shut-off with some flow control is needed