Industrial Isolation Valves
Unyazi supplies industrial isolation valves designed to fully open or close flow paths within pipelines and process systems. Also known as shutoff or on-off valves, they help protect equipment, support maintenance work and isolate sections of a plant during normal operation or an emergency.
Our team helps clients select the correct valve design, materials and operating method for each application.
How Isolation Valves Work?
Isolation valves create a secure barrier within a pipeline by stopping the flow of liquid or gas. When open, the valve allows media to move through the system. When closed, it separates equipment, pipework or a section of the plant from the rest of the process.
This makes isolation valves essential for maintenance, repairs, equipment protection and emergency shutdown procedures.
Key Benefits
Reliable Shutoff
Isolation valves are designed to stop flow fully when closed. This helps create a secure barrier between operating equipment and isolated sections of the system.
Safer Maintenance
Correct isolation allows maintenance teams to work on equipment without exposure to active process media. This supports safer shutdown and repair procedures.
Emergency Protection
Isolation valves can help stop the movement of hazardous liquids or gases during an emergency. Fast and dependable operation can reduce risk to people and equipment.
Equipment Protection
By separating damaged or inactive equipment from the wider system, isolation valves can help prevent faults from affecting other parts of the plant.
Suitable for Demanding Conditions
Valve materials and sealing systems can be selected for steam, hydrocarbons, chemicals and other industrial media.
Manual or Automated Operation
Isolation valves can be operated by hand or connected to pneumatic, electric or hydraulic actuators for remote and automatic control.
Isolation Valve Types and Configuration
Several valve designs can be used for isolation, depending on the process and operating requirements. Fire-safe designs may also be selected for hydrocarbon storage and other applications where additional protection is required.
Ball ValvesGate ValvesButterfly ValvesPlug ValvesEach design offers different benefits in terms of pressure, temperature, flow resistance, installation space and shutoff performance.
Where Isolation Valves are Used?
Isolation valves are installed throughout industrial facilities wherever equipment or pipework must be separated safely. They are especially important in areas where maintenance teams need a dependable barrier before work can begin.
Steam circuitsHydrocarbon storage systemsProcess pipelinesUtility linessPumps and compressorsTanks and vesselsMaintenance isolation pointsEmergency shutdown systems
Selecting and Operating the Correct Isolation Valve
The correct isolation valve must be selected according to the process media, pressure, temperature, pipe size and required shutoff performance.
Unyazi also considers the operating frequency, valve materials, sealing system and available installation space. Where the valve forms part of a safety or emergency shutdown system, the required closing speed and actuator arrangement must also be assessed.
This approach helps reduce leakage, unreliable operation and premature valve wear.
Testing and Ongoing Support
Isolation valves should be tested regularly to confirm that they close correctly and do not allow media to pass through the seat. Unyazi can assist with pressure testing, seat leak testing, functional checks and actuator testing. These services help confirm that the valve will operate as required during maintenance or an emergency.
Our team can also support installation, commissioning, inspections, diagnostics, maintenance and repairs. Technical records can be supplied to support maintenance planning and system traceability.
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