M Series Lowflow valve


A miniature air-operated proportional control valve, the M Valve is designed for use on gases or liquids, and is available for 1/4″ and 1/2″ line sizes. A range of inner valve trims provide flow control with CV values from 3.0 down to 0.00008, and each valve’s control range is as much as 40:1. Interchangeable trims make this valve perfect for pilot plant control, as it is a scaled-down version of larger valves.

Offering linear, equal percentage and quick opening control characteristics, this valve can also be applied within dosing, sampling and blending systems. These valves are usually made from forged 316 stainless steel, or can be fabricated from Hastelloy, Monel, PVC or carbon steel body materials as an alternative.

We recommend a standard top mounted positioner for higher line pressure applications. Alternative valve seal designs are available for high integrity applications, and cooling fins or extension bonnets can be used for high temperatures or cold service.


  • 1/4” or 1/2” proportional control
  • Trims which can be interchanged
  • Air operated
  • CV values 0.00008 to 3.0
  • Stainless Steel valve and trim
  • Accurate low flow control
  • Linear or equal percentage control characteristics