Product Overview
The KOZO Alloy 20 Globe Valve is designed for selected acid and corrosive chemical services requiring controlled shut-off or throttling and Alloy 20 construction. The globe-style plug and seat provide more controllable flow regulation than a gate valve and can be configured for manual or automated operation.
Why Alloy 20?
Alloy 20 is a nickel-iron-chromium alloy system containing molybdenum and copper. It is commonly considered for certain sulfuric-acid and chemical-processing duties where conventional stainless steels may not provide sufficient corrosion resistance. Cast bodies may use ASTM A351 CN7M, while wrought and forged components use the applicable Alloy 20 grado.
Key Design Features
- Alloy 20 / CN7M pressure-containing material options.
- Globe plug-and-seat construction for shut-off or throttling.
- Flanged or butt-weld connection options.
- Manuale, gear, pneumatic or electric operation depending on project requirements.
- Project-specific trim, packing and gasket materials.
Technical Specifications
| Tipo di valvola | Globe Valve |
|---|---|
| Materiale | Alloy 20 / ASTM A351 CN7M Options |
| End Connection | Flangiato / Saldatura di testa |
| Operation | Manuale / Ingranaggio / Pneumatico / Elettrico |
| Typical Service | Acid / Corrosive Chemical Service |
Typical Applications
- Selected sulfuric-acid process lines
- Chemical transfer and dosing systems
- Fertilizer plants
- Corrosive utility and process piping
Selection Notes
Material compatibility and throttling conditions should be evaluated together. High pressure drop may require special trim to control cavitation, flashing, erosion or excessive velocity. Alloy 20 is not universally suitable for all acid concentrations and temperatures.
How to Specify
Please provide size, pressure class, medium, concentration, flow rate, inlet/outlet pressure, temperature, body/trim material, end connection, operator or actuator and required testing.
FAQ
Is Alloy 20 always better than 316L?
No. Alloy selection depends on the actual chemistry, concentration and temperature. Alloy 20 is considered where its corrosion profile better matches the service.
