Product Overview
The KOZO CN7M Alloy 20 Sleeved Plug Valve is designed for corrosive chemical service where Alloy 20 cast construction and PTFE sleeve sealing are preferred. The sleeve provides the main sealing interface around the plug, supporting quarter-turn shut-off without relying on direct metal-to-metal seating.
Why CN7M / Alloy 20?
ASTM A351 CN7M is a cast Alloy 20 grade used in selected sulfuric-acid and chemical-processing environments. Its nickel, chromium, molybdenum and copper alloying system provides a corrosion-resistance profile that can be useful in services where conventional stainless steel is insufficient. Actual suitability must be checked against concentration, temperature, contaminants and pressure.
Key Design Features
- PTFE sleeved plug: Primary sealing interface around the plug for quarter-turn isolation.
- ASTM A351 CN7M body: Alloy 20 cast construction for selected corrosive chemical duties.
- Flanged RF ends: Reference connection for industrial piping.
- Worm-gear operation: Supports controlled operation on larger valves or higher-torque services.
- API 599 design: Reference standard for the plug-valve configuration.
Technical Specifications
| Valve Type | Sleeved Plug Valve |
|---|---|
| Reference Size | 10 in |
| Reference Pressure | ASME Class 150 |
| Body Material | ASTM A351 CN7M / Alloy 20 |
| Sleeve | PTFE |
| Design Standard | API 599 |
| Face-to-Face | ASME B16.10 |
| Inspection & Testing | API 598 |
| End Connection | RF Flanged |
| Operation | Worm Gear |
Typical Applications
- Chemical processing
- Acid-handling systems
- Fertilizer and specialty chemical plants
- Corrosive transfer and isolation service
Selection Notes
Alloy 20 should be selected based on the real chemical environment. PTFE sleeve compatibility and temperature limitations also need to be checked against the fluid and operating conditions.
Available Configurations
Alternative sizes, pressure classes, operators and trim options may be available subject to design and project specification.
How to Specify This Valve
Please provide size, pressure class, medium, concentration, temperature, body material, sleeve material, end connection, operator and quantity.
FAQ
What is CN7M?
CN7M is an ASTM A351 cast Alloy 20 grade used in selected chemical and acid-handling applications.
Why use a sleeved plug valve?
The PTFE sleeve provides the primary sealing interface and supports compact quarter-turn isolation in corrosive process service.
