PMV Modular Rotary Valve

A superior, long-lived modular rotary valve for metering and airlock applications handling powders or small granules.  It offers unmatched durability compared to competing solutions and is engineered and built for the most difficult applications in a plant.  

The modular design of the PMV simplifies maintenance and makes rebuilding practical and cost-effective. 

PMV modular rotary valve

Typical Applications

  • Silo discharge
  • DSI systems
  • Pneumatic conveying systems
  • Ash handling
  • Pulverized coal/pet coke handling
  • Additives and blending
  • Dust collector or process baghouse
  • Cement
  • Lime, trona, gypsum
  • Co-generation / powerhouse
  • Activated carbon
  • Metallurgical coal
  • Calcium carbonate
  • Diatomaceous earth

Key Advantages

  • Dramatically longer life than traditional cast-iron rotary valves.  2-4x the usable life of commodity cast iron rotary valves, depending on application and material.
  • Predictable reliability avoids unscheduled downtime.  Outage-to-outage durability so that maintenance or replacement can be scheduled in a non-emergency manner
  • Compact design is a “universal replacement” for valves from others.   Small footprint minimizes or eliminates retrofitting effort and expense
  • Industry-best rotor-to-barrel clearance to minimize blowby (leakage) in pneumatic conveying applications or under vacuum
  • Modular design makes field repairs a reality. Saving money and reducing the investment in spares
  • Components and designs for applications up to 1200° F
  • Compliant with NFPA 69 and 85 standards
PMV modular rotary valve exploded photo
PMV modular rotary valve round flange iso1

The PMV Does It Better

  • Handles highly abrasive applications with ease,  where commodity valves wear out too quickly; increasing cost of ownership, threatening unplanned downtime, and/or disrupting your process.
  • Especially suited to pneumatic conveying systems, including DSI systems for pollution control, where conveying rates decline or fluctuate due to excessive or increasing blowby that robs the system of motive air or fluidizes the material above the valve.

Designed for Performance, Built to Last

  • The key wear components – the rotor and the barrel sides – are manufactured of Tri-Braze abrasion-resistant steel for exceptional durability
  • All seven major components in a PMV are CNC-machined to thousandth-of-an-inch tolerances for precise fit and minimal rotor-to-barrel clearance
  • Bolt-together, modular design makes component replacement possible – in place, in your workshop, or at Precision’s factory
  • Internal surfaces of the barrel sides and wear plates can be chrome plated or ion-nitrided to increase surface hardness and reduce wear
  • Rotor diameter is machined to a +/- 0.001” tolerance prior to final assembly for the operating temperature of your material – prevents lock-up due to thermal expansion
  • Heavy-duty Dodge or Timken piloted flange bearings installed outboard of the housing to isolate heat
  • Nord, SEW, or Sumitomo shaft-mounted gear-motor drive packages for clean, safe installations providing direct application of power with options for variable speeds and other functions

Options and Upgrades Available

Option Benefit
304 or 316 stainless steel constructionTwo configurations for corrosive applications
Beveled Rotor VanesFor materials that tend to smear and pack on valve internal surfaces
Air Purge Factory- or field-installed air purge for valves feeding pneumatic conveying lines
Zero Speed SensorsDetect and then alarm or notify that the valve is not operating
MSHA/OSHA-Compliant Shaft Guards For operations and maintenance staff safety
TransitionsAllow slide-out/slide-in replacement of competitor rotary valves
Drop-Through Wear Plates For applications discharging into non-pressurized conveyors or tanks
Pneumatic line T-Injectors For smooth injection of your material into the convey line
Maintenance GateFor installation above the PMV to facilitate repairs or adjustments in place
Reduced and/or rounded pocket rotors For lower feed rates
Modular designMakes “double-length” valves possible – increasing CFR without increasing height

Let our applications specialists help you with your extreme-duty bulk material handling needs.