Description
A check valve (non-return valve) allows fluid to flow in only one direction, automatically preventing backflow. It requires no operator intervention or external power. Check valves are essential for backflow prevention in plumbing and heating systems.
Preventing reverse flow requires precision, and Autonex delivers as a trusted non-return valve supplier in Doha. We provide a diverse inventory of backflow prevention valves, ranging from classic swing check valves for water distribution to specialized spring-loaded and lift check valves in Qatar. Our products safeguard critical pumps and heating systems from costly backflow damage.
Check Valve Types
| Type | Operating Principle | Typical Size Range | Best Application |
|---|---|---|---|
| Swing Check | Hinged disc swings open/closed | 15-300mm | Horizontal or vertical flow |
| Lift Check | Disc lifts vertically | 15-50mm | High pressure, clean fluids |
| Ball Check | Ball seats against seal | 15-50mm | Slurries, viscous fluids |
| Spring Check | Spring-loaded disc | 8-54mm | Any orientation |
| Wafer Check | Thin wafer between flanges | 50-300mm | Large diameter, compact |
Applications
- Preventing backflow from storage tanks
- Protecting pumps from reverse flow
- Heating system flow direction assurance
- Boiler return protection
- Backflow prevention assemblies (double check valves)
