Product Overview
The ROTAREX SI220 V is a high-integrity gas cylinder valve engineered by Rotarex, a globally recognized specialist in gas control technology. Operating on a direct-acting, manually actuated stem principle, this valve provides precise on/off regulation of compressed and liquefied gases stored in high-pressure cylinders. Its robust brass and stainless steel construction, combined with a metal-to-metal or elastomeric seat design, ensures leak-tight sealing and reliable isolation in process, laboratory, and industrial gas distribution systems. The “V” designation indicates a valve configuration optimized for specific gas service compatibility, making it a critical safety and control component in cylinder filling plants, gas panels, and analytical instrumentation lines.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Process & Pneumatic Valve (Gas Cylinder Valve) |
| Model Designation | ROTAREX SI220 V |
| Operating Pressure | Standard Industrial Grade (Up to 200 bar service pressure) |
| Mounting & Connection | Standard Cylinder Neck Thread (e.g., CGA / DIN / ISO interface) |
| Actuation Type | Manual Handwheel / Stem Operated |
| Body Material | High-Strength Brass (Chrome-Plated Options Available) |
| Sealing Principle | Non-Rising Stem with Elastomeric / PTFE Seat |
| Outlet Configuration | Standard Cylinder Outlet (Side or Top Entry) |
Engineering Features & Advantages
- Precision Gas Metering: The non-rising stem and finely machined seat provide smooth, progressive flow control for accurate gas delivery in analytical and process applications.
- Leak-Tight Integrity: Advanced seat and seal geometry ensures zero-leakage performance at full cylinder pressure, critical for toxic, flammable, or high-purity gas service.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, including repeated filling cycles, temperature fluctuations, and corrosive environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rotarex SI220 V specifications, ensuring drop-in replacement without modification to cylinder neck or gas panel connections.
- Safety-Engineered Design: Incorporates pressure relief and burst disc provisions where applicable, meeting stringent gas cylinder safety standards.
Typical Industrial Applications
The ROTAREX SI220 V gas cylinder valve is deployed across a wide range of heavy industrial and high-purity gas scenarios, including: industrial gas cylinder filling and distribution plants; laboratory and analytical instrumentation gas supply panels; petrochemical and refinery process sampling systems; medical and specialty gas delivery manifolds; and semiconductor fabrication facilities requiring ultra-high-purity gas control. Its robust construction and precise actuation make it equally suited for welding gas service, calibration gas mixtures, and research-grade compressed gas handling.
PRODUCT IMAGES


ROTAREX SI220 V Gas Cylinder Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine ROTAREX SI220 V Solenoid Directional Seat Valve. This German-made hydraulic component features a poppet-type design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.