Four advanced design elements differentiate the Chromatic Cartridge Design from all other ball valves or gate valves on the market.
All trim components are housed in a single pre-tested cartridge, which can be easily replaced without special tools or pulling the valves from the line. Rapid replacement reduces maintenance costs.
- Removable/Replaceable Cartridge
- Ability to quickly inspect the valve
- Capable of revising trims for throttling
- Fewer parts to stock
- Minimal downtime for valve repair
- No special tools required for service
- Capable of changing from resilient to metal seats
- Ability to install a temporary strainer for startup purposes
- Ability to install a temporary trim for welding valves in line
- Confidence in making a reliable repair with pre-tested cartridge
- Significant Reduction in Downtime – Top Entry
- Weld end valves do not have to be removed and/or reinstalled
Mechanical Wedge Seal
Unlike traditional designs with a rotating ball, plug or disc, the HCV, FCV and EBV product lines are designed with an engineered offset on the HEMIspherical closure member – the HEMI. The HEMI rotates around a stationary core and wedges mechanically against the valve seat to provide a bubble-tight shutoff in both directions, in either high or low pressures, with repeatable zero leakage. Standard seat designs are suitable up to 600 deg F.
- The HEMI applies independent load to seat without seat springs or aided by line pressure
- Valve will seal at both low and high pressures
- Resilient seals or metal-to-metal seats available
- Zero-leakage (bubble-tight shutoff) resilient seat, bi-directional sealing
- ISO 5208 Rate A (Zero Leakage) or Rate B shutoff for metal-to-metal seat
- Improved closing reliability in ESD application
- Suitable for thermal cyclic applications
Stationary Fixed Core
The stationary fixed core directs the fluid flow straight through the valve without taking multiple paths that contribute to premature seal failure. The core aids in protecting the seat during the initial opening and final closing when fluid velocities are at their greatest. Because the core directs fluid through the valve it reduces the effects of erosion and corrosion in the body.
- Flow is not directed at seats during operation
- Service fluid (and entrained particulates) is directed away from sealing surface minimizing erosion of seats
- Flow is not directed at valve body wall – low erosion of pressure containing components
- Low turbulence and reduced erosion of valve internals
- Low hydrodynamic torque
- High flow coefficient
- Standard core dimensions meet API 6D for piggable operations
Quarter Turn Operation
The quarter-turn 90° operation is consistent with industry standards and helps in delivering an overall lower total cost of operation.
- Easy to automate with any commercially available actuator
- Lower emissions than rising stem designs
- Easy packing adjustment to stop external leaks
- Low profile for use in skids and offshore applications
- Utilizes existing ball valve actuation and sizing principles
- Faster more reliable closure for ESD applications