Line Shut-Off Structures
SESAN provides project-specific engineering, manufacturing and site installation of line shut-off structures for irrigation and potable water transmission lines and pressurised waterways.
Line shut-off structures consist of the valve assembly that closes the main pipeline under operating, maintenance and emergency conditions, together with the steel structures that carry and protect this assembly. Systems are designed for each project considering line diameter, operating and test pressure, flow rate, closing time, installation location (buried line or valve chamber) and site conditions.
Line Shut-Off Valves
The shut-off valve is the main element that closes the pipeline. SESAN manufactures butterfly and gate type valves according to line diameter, operating pressure and closing time. Body, disc and shaft design is configured by evaluating internal pressure loads together with flow conditions.
Valve Protection Structures & Connection Elements
On buried lines, the valve and its connection elements are located inside a valve chamber that provides maintenance and operating access. SESAN manufactures and installs the pipe sections, transition elements, collector and manifold systems, supports and dismantling joints of this structure according to the project geometry.
Engineering & Manufacturing Scope
- Line shut-off valves — butterfly and gate type
- Valve protection structures and valve chamber equipment
- Collector and manifold systems
- Horizontal drilling pipe manufacturing
- Transition pieces, reducers and bends
- Dismantling and expansion joints
- Flanged and welded connection elements
- Support and bearing structures
Applications
- State Hydraulic Works irrigation and transmission lines
- Potable water transmission lines
- Pumping stations and booster lines
- Pressurised waterways of hydropower plants
- Water lines of industrial facilities
SESAN treats line shut-off structures — for State Hydraulic Works irrigation lines in particular, as well as for projects in Türkiye and abroad — as a complete system in which the pipeline, the valve and the protection structure are evaluated together.
