FAQ

Does Maui Innovation Group make and sell (or intend to make and sell) valves?

 No, we license our technology to established valve manufacturers in the  hopes of getting our technology integrated into the widest possible  variety of types and applications of valves that each distinct  manufacturer specializes in.  We don't even pretend to know every  industry that our valve could be used in, but we do know that leak-proof  valves can benefit almost every industry, and make the world better,  safer, and more efficient.  We want to make our technology broadly  available to valve manufacturers that specialize in each industry. 

What are the available torque ranges of PLEXIS valve technology?

 

Torque can be delivered to a given valve  actuation mechanism up to whatever level is needed (as specified a  priori) to meet that particular application – There is no absolute  limitation on design torque in and of itself (however a magnetic  coupling is essentially always going to be a bit larger than a straight  mechanical shaft and seal – for moderate torque manual applications, we  try to stay within the size envelope encompassed by the handle – though  that may not always be possible for very high torque applications).  Our  Trade space is basically as follows:

Maximum Torque that can be delivered by the Magnetic Coupling

vs.

Size / Diameter / Height of the Magnetic Coupling 

vs.

Cost
(Primarily for size and grade of magnets employed in the Magnetic Coupling)

vs.

A Viscous Damping Coefficient
(due to several drag mechanisms within our coupling that can be reduced  somewhat via the use of composites and streamlined actuator shapes)

This will likely be significant for higher torque liquid handling valves with tight tolerances.  It is anticipated that these viscous type drag forces may be  as large or larger than the friction of the valve stem seal in a  traditional stem seal valve for higher torque applications.  Maximum  torque is pre-specified and baked into the design, the valve cannot be  over-torqued using the stock actuator that comes with the valve.  This  has the benefit of protecting the seat and mechanism from over-torque  damage.  Unseating torque is usually specified as a bit higher than  seating torque.  A cheater handle can be provided if desired to  temporarily increase torque above a designed specification for stuck  valve conditions.

What types of valves is this technology applicable to?

 

This technology is predominately applicable to macro scale rotary and linearly actuated valves such as gate valves, globe valves, ball valves, butterfly valves, and similar technologies.

It is applicable to both manual and automated or powered actuation of  valves, and is applicable across a broad range of valve sizes from  fractions of an inch (or centimeter) to large oil and gas pipeline  valves.

It is applicable to threaded, brazed, soldered, and welded  connections across a wide range of temperatures and operating  environments.