Malema Markets

Wherever safe, accurate, and repeatable flow control and measurement are required, you can find Malema solutions.

For over 40 years, Malema flow meters, flow controllers, flow switches, relief valves and pressure sensors have been utilized across various demanding applications. They offer high-purity performance in semiconductor production, safety in dangerous industrial environments and precision in hydrogen transportation applications.

Click on the markets below to learn which Malema flow control and measurement solutions can help you achieve your desired results.

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MIID-1000 Malema Interconnect Interlock Device High Purity By-Pass Leak Detection and Back Flow Prevention System with PTFE Wetted Parts

The patented Malema Interconnect Interlock Device (MIID-1000) By-Pass Leak Detection and Prevention System features all high purity PTFE and PFA construction of the wetted components and was developed especially for use in CMP tools. With built-in leak detection, monitoring, and optical valve position sensing, the MIID Interlock Device provides backflow protection and prevents internal bypass leaks in bulk chemical and high-purity water applications.

This product is protected by U.S. and International patents. See our list of patents for more information.


  • All high purity PTFE and PFA construction of the wetted components
  • Integrated design for compact, space savings installation
  • Designed for minimal head loss
  • Field configurable flare connections [Inlets can be configured as either ¼” or 3/8” flare nipples] allowing for simplified retrofit installation and reduced inventories
  • Valve components tested to over 10,000,000 cycles in DIW (over 1,050,000 in Cabot SS-12)
  • Valve Cv = 0.8
  • Built-in Leak detection & monitoring
  • Built-in Optical Valve position sensing


Product Specifications

Media Pressure 0 to 80 PSIG
Pneumatic Actuation Pressure 60 to 120 PSIG
Media Temperature -17.7° C to 130° C
Ambient Temperature -17.7° C to 65.5° C (no freezing liquids)