The Chemline Exner Characterized Control Valves provide extremely precise flow control of aggressive fluids. Valves flow characteristics (Cv vs. lift) follow theoretical linear or equal percentage curves through the entire range of stem travel. This is accomplished with precision made replaceable seats and plugs in a wide variety of Cv values.
The Teflon® bellows shaft seal provides almost frictionless stem movement and provides over 10 years of maintenance-free operation on aggressive chemical services.
Features:
Precise and Sensitive Control
- Predictable and repeatable control of corrosive fluids.
These valves respond smoothly and quickly to small changes in signal. Deadband and hysteresis is negligible.
High Rangeability
- Valve characteristics (flow rate vs. stem lift) follows the theoretical curves through the entire range of opening including extreme ends of travel
100% Shutoff
- Class IV leakage (rate is 0.01% of rated capacity according to ANSI B16.104-1976)
Large Choice of Cv Values
- 18 standard Cvfs from 0.11 to 105.00
- Smaller Cvfs down to 0.003 are available
Field Interchangeable Seats and Plugs
- Valve Cv may be changed later if flow conditions change
- Special materials are available
Abrasion Resistant
