Home > MAXI-Check I Ball Check and Isolation Valves from Upwey Valve & Engineering

MAXI-Check I Ball Check and Isolation Valves from Upwey Valve & Engineering

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article image MAXI-Check I Ball Check and Isolation Valve

Upwey Valve & Engineering  presents a range of ball check valves and isolation valves designed specifically for slurries, dewatering or high pressure applications.  

MAXI-Check I (MCI) ball check and isolation valves feature a large port design that prevents clogging while the HI-WEAR seat offers a large sealing area.  

The Australian-made MAXI-Check I valves feature a simple construction for ease of maintenance. The valve is normally located on pump discharge and the ball is held in the seat by back pressure in static situations.  

When the pump starts and pressure equalises, the ball moves up into the ball bonnet where it is free to move and rotate on the media as it flows through the valve. The design of the valve prevents scale build-up.    

As the pump/media stops flowing, the ball falls into the seat and is once again held in the closed position by the back pressure. The hand wheel can then be wound to the closed position where the ball is mechanically held in the seat to create an isolation valve.  

Since the ball is free to roll or rotate on the flow, it does not show any signs of wear while the seat is designed with minimum exposure to wear factors.  

Applications of MAXI-Check I ball check and isolation valves: 

  • Mine or pit dewatering
  • Slurry and tailings
  • Power generation ash disposal
  • Pulp and paper
  • Sand and mineral processing
  • Environmental and effluent handling

Key features of MAXI-Check I ball check and isolation valves: 

  • Simple construction allows for ease of maintenance
  • Seat and seal are replaceable onsite
  • Primary seat is made from 304 stainless steel as standard
  • Wear-resistant secondary seal allows drip-tight sealing under all conditions in high pressure valves
  • Body fabricated in carbon or stainless steel
  • Internal lining in hot vulcanised natural black rubber, EPDM or urethane on request
  • Full bore design
  • Design Standard: ASME B16.34-2009, ASME B31.3-2002, AS4037-1999
  • Spindle made from 304 stainless steel as standard with open/close indicators
  • Optional limit switch pack
  • Abrasive blast cleaned and coated in 2-pack epoxy paint
  • Pressure ratings ANSI Class 150, 300, 600 and 900

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