Brand new Unboxed MVP Pump. Lightly used for Demo and Events as model. Very minimal use. Contact or Details. $11k OBO.


Master Vapor Pumps MVP-6CFM Vapor Recovery Pump is designed for hydrocarbon extraction processing. The Dual-Diaphragm pump is electrically powered by an explosion-proof motor. It is built with stainless steel wetted parts and has a max allowable working pressure of 350 PSI. Each unit is certified and made in the USA.

Performance Factoids:

  • Recover LP-Gas vapor at over 6CFM (cubic feet per minute)
  • Recover butane at up to 1 LB/Min (pounds per minute)
  • Recover and recondense butane at over 12 GPH (gallons per hour)
  • Maximum pumping outlet pressure: 60 PSI (4.1 bar) continuous, 70 PSI (4.8 bar) intermittent
  • Maximum pumping inlet vacuum produced: 27 InHg (0.91 bar)
  • Maximum pumping speed: 190 CPM (cycles per minute)
  • Pump static withstand pressure rating: MAWP 350 PSI (24 bar)
  • Materials: pressure section: stainless steel; diaphragms: FKM; reed valves: stainless steel
  • Optional PTFE diaphragms kit available
  • Process gas temperature range: FKM -40-275F (-40-135C); PTFE +40-220F (4-104C)
  • Recommended FKM replacement schedule: every 1000 hours running time
  • Air temperature range for motor/gearbox operation: 32-104F(0-40C)

Pump Head Charge:

  • Motor is coupled to diaphragms with patented gas pressure charged chamber
  • Pumping outlet pressure runs about 10 PSI lower than the charge gas pressure level
  • Non-reactive CO2 gas is used to charge the pump head
  • CO2 gas is safer than air for driving the pump
  • CO2 gas is non-flammable and non-explosive with LPG (should a diaphragm ever leak)
  • CO2 gas regulator with gauges is provided with pump assembly
  • CO2 tank is operator provided (cannot ship filled tanks) – from any welding supply store
  • Pump charge gas supply: standard (#20) 5 LB tank of industrial CO2
  • Typical CO2 gas usage: