Product Overview
The SITEC 719.0283-VI-NO/b is a pneumatically operated high-pressure valve engineered for precise control of gaseous and liquid media in demanding industrial process circuits. Manufactured by SITEC, a recognized specialist in high-pressure components and systems, this valve utilizes a pneumatic actuator to drive a precision sealing mechanism, enabling reliable on/off and switching functions at elevated operating pressures. Unlike hydraulic pumps, this component performs no fluid displacement or pressure generation; its role is strictly to regulate, isolate, or divert flow within process and pneumatic systems. The VI-NO/b designation indicates a normally open (NO) configuration with a specific body and connection variant, making it suitable for fail-safe or continuous-flow applications where media passage is required in the de-energized state.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatically Operated High-Pressure Valve (Process & Pneumatic Valve) |
| Model Designation | SITEC 719.0283-VI-NO/b |
| Actuation Type | Pneumatic actuator (external pilot air supply) |
| Valve Configuration | Normally Open (NO) — open in de-energized state |
| Operating Pressure | High-pressure industrial grade (rated per SITEC 719 series specification) |
| Mounting & Connection | Standard SITEC high-pressure interface (VI variant) |
| Media Compatibility | Industrial gases and liquids compatible with valve body and seal materials |
Engineering Features & Advantages
- Precision Pneumatic Actuation: The external pneumatic pilot signal delivers fast, repeatable switching action, allowing accurate control of high-pressure media without electrical actuation at the valve body.
- Normally Open Fail-Safe Logic: The NO/b configuration ensures the valve remains open if pilot pressure is lost, supporting continuous-flow or venting requirements in critical process lines.
- High-Pressure Sealing Integrity: Engineered sealing geometry and body construction withstand elevated process pressures while maintaining tight shut-off and minimal leakage.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, including cycling duty and exposure to aggressive or high-purity media.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original SITEC OEM standards for the 719 series, ensuring drop-in serviceability.
Typical Industrial Applications
The SITEC 719.0283-VI-NO/b is deployed in high-pressure process and pneumatic systems across industries such as chemical and petrochemical processing, industrial gas handling and compression circuits, waterjet and high-pressure cleaning systems, and hydraulic test benches where precise media isolation or diversion is required. Its pneumatic actuation and normally open design make it particularly suited to applications demanding reliable flow in the event of pilot air loss, including safety venting, continuous sampling lines, and automated process control loops.
PRODUCT IMAGES
SITEC 719.0283-VI-NO/b Pneumatically Operated High-Pressure Valve
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Shop the genuine SITEC 719.0283-VI-NO/b Solenoid Directional Valve. This Germany-made 24V DC hydraulic component features a 2-way normally open design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.