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A descale spray valve is required for positive on/off control of the high-pressure water flow to the descale spray headers on the rolling mill line. Hunt Valve’s Mega-Flo Descale Spray Valves are noted worldwide for ultimate reliability and long life in this challenging operating environment. In fact, our unique sliding plunger design has made the Mega-Flo the most versatile and easy-to-maintain valve on the market.


Mega-Flo “C” Descale Valves

Mega-Flo C Plunger Descale Valve

Hunt Valve’s new Mega-Flo C Descale Valves are the longest lasting plunger-style descale valves available. The upgraded valves feature the world’s most advanced ceramic materials to deliver two to three times longer service life than any other plunger-style descale valve.

This ultra-durable plunger-style descale valve saves customers 33% on the total cost of ownership over competitors’ valves. The savings is based on the initial purchase price and maintenance requirements over the first three years of service, then a 50% reduction in maintenance costs thereafter.


Why Ceramic Technology?

Hunt Valve is the only industrial valve manufacturer that provides descale valves with ceramic wear protection. The ceramic material used in critical components of the Mega-Flo C is:

  • Harder than steel and virtually unbreakable.
  • Incredibly resistant to corrosion and wear.
  • 10 times more durable than conventional valve materials.


Mega-Flo “C” Product Features
  • State-of-the-art valve based on Hunt’s proven core plunger technology.
  • Ceramic plunger and balance chamber tube for increased wear resistance.
  • Ceramic Housing Liner which can now be replaced in the field.
  • Upgraded cylinder design for less corrosion, wear and friction due to the following:
    • Nitrocarburized piston rod and tie-rods.
    • Low friction urethane piston and rod seals.
    • 60 RC hard anodized cylinder bore.
  • Low-turbulence flow plunger design.
  • Plunger contained in the pressure vessel for safety.
  • Staggered flow slots provide gradual acceleration and deceleration of flow during plunger shifting to prevent water hammer.
  • Proximity switch or Transducer options for position feedback.
  • Isolated air actuator, kept away from the high-pressure fluid.
  • Anti-extrusion seals without grease requirements.
  • Seal is pushed away from the plunger by the fluid pressure during shifting to prolong life.
  • Sealing surface is NOT exposed to the water flow path when valve is open or closed.


Mega-Flo “C” Plunger-Style Cartridge Assembly

Extend the life of your existing valve installation by replacing your old-style cartridge. The Mega-Flo C cartridge assembly is a drop-in fit to the existing Mega-Flo A or B installation for easy field upgrade capability. It offers the benefits of the Mega-Flo C enhancements without having to replace the entire valve system. The cartridge saves you 40% cost versus purchasing a complete new valve.


Integral Prefill Mode with Full Shut-Off Capability to Solve Cooling Issues
Hunt Valve Mega-Flo C With Linear Actuator

Hunt Valve Mega-Flo C With Linear Actuator

Do you have cooling issues with your strip from continuous header pre-fill flow? An optional linear actuator is now available to shift the plunge from the pre-fill flow position to the full off position to reduce this problem. The new linear actuator design provides precision control.

Besides solving your cooling issues, this actuator:

  • Provides the necessary prefill to prevent water hammer and resulting header damage.
  • Eliminates the maintenance and reliability concerns of operating an external high-pressure solenoid-operated prefill control valve.
  • Relieves safety, maintenance and reliability issues of operating a low-pressure prefill system.
  • Offers flexibility to shut off the prefill flow when not required, thus providing increased flow and pressure available for descaling to the system or a significant energy cost savings if one pump can be shut-down by eliminating all of the continuous prefill lines in the system.


MV03 & MV05 Valves

Hunt Valve’s MV03 & MV05 Directional Valves are manufactured with the high-quality design features required for the severe duty cycles of Steel and Aluminum mill industrial hydraulic systems as well as descale spray applications for flow rates less than 400 gpm. The V03 & V05 Series, the forerunner of the MV03 & MV05, has proven to be one of the most reliable valves in the world for severe mill duty applications.

The M in the product name stands for “modular.” We upgraded this line of valves to include modular cartridge units that significantly reduce spare part requirements and streamline the maintenance procedure for the end user. The MV03 valves are rated for 3000 psig while the MV05 valves are rated for 5000 psig.

Link to MV034 ppt: http://www.huntvalve.com/mvo-valve-series.html