Top Variable Displacement Pump

Robinair (15600) CoolTech Vacuum Pump - 2-Stage, 6 CFM

  • Robinair's CoolTech 2-stage rotary vane design vacuum pump features the power and capacity needed for a wide range of service applications as well as robust construction for a long service life.
  • Powerful 1/2 HP, 115V/60Hz thermally protected motor, 6 CFM free air displacement, and factory rated to 15 microns for a fast, thorough evacuation.
  • Offset rotary vanes build powerful compression within the pumping chamber - reducing pressure and vaporizing moisture.
  • durable molded polycarbonate base improves pump balance and minimizes vibration.
  • Iso-Valve isolates pump from system with just a quarter turn.
  • Gas Ballast design mixes moisture laden air passing through pump with relatively dry air so compression doesn't cause condensation.
  • 1/4, 3/8, and 1/2 inch male flare inlet fittings, easy to read sight glass, easy access oil fill port, and angled oil drain valve for faster, more complete draining of the reservoir.
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Robinair (15400) CoolTech Vacuum Pump - 2-Stage, 4 CFM

  • Robinair's CoolTech 2-stage rotary vane design vacuum pump features the power and capacity needed for a wide range of service applications as well as robust construction for a long service life.
  • Powerful 1/2 HP, 115V/60Hz thermally protected motor, 4 CFM free air displacement, and factory rated to 15 microns for a fast, thorough evacuation.
  • Offset rotary vanes build powerful compression within the pumping chamber - reducing pressure and vaporizing moisture.
  • durable molded polycarbonate base improves pump balance and minimizes vibration.
  • Iso-Valve isolates pump from system with just a quarter turn.
  • Gas Ballast design mixes moisture laden air passing through pump with relatively dry air so compression doesn't cause condensation.
  • 1/4 inch and 1/2 inch male flare inlet fittings, easy to read sight glass, easy access oil fill port, and angled oil drain valve for faster, more complete draining of the reservoir.
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Robinair (15120A) CoolTech Vacuum Pump - 2-Stage, 10 CFM

  • Robinair's CoolTech 2-stage rotary vane design vacuum pump features the power and capacity needed for a wide range of service applications as well as robust construction for a long service life.
  • Powerful 1/2 HP, 115V - 60Hz thermally protected motor, 10 CFM free air displacement, and factory rated to 15 microns for a fast, thorough evacuation.
  • Offset rotary vanes build powerful compression within the pumping chamber - reducing pressure and vaporizing moisture.
  • durable molded polycarbonate base improves pump balance and minimizes vibration.
  • Iso-Valve isolates pump from system with just a quarter turn.
  • Gas Ballast design mixes moisture laden air passing through pump with relatively dry air so compression doesn't cause condensation.
  • 1/4, 3/8, and 1/2 inch male flare inlet fittings, easy to read sight glass, easy access oil fill port, and angled oil drain valve for faster, more complete draining of the reservoir.
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Vive Alternating Pressure Mattress - Includes Electric Pump System and Mattress Pad Cover - Quiet, Inflatable Bed Air Topper for Pressure Ulcer and Pressure Sore Treatment - Fits Standard Hospital Bed

  • ALLEVIATES BED SORES AND ULCERS: Providing relief from bed sores and ulcers caused by extended bedrest, the alternating pressure mattress promotes increased circulation and helps manage skin maceration. The variable pressure mattress evenly distributes weight to relieve pressure spots for exceptional support and comfort. Perfect for immobilized or weak patients who cannot shift their weight frequently..
  • DESIGNED WITH 130 AIR CELLS: Each of the 130 air cells alternately inflate and deflate to create a mattress surface that evenly distributes a patient or loved one’s weight and eliminates pressure spots. Each air cell is heat sealed to ensure it will not leak for exceptional durability..
  • QUIET VARIABLE PRESSURE PUMP: Variable pressure pump is ultra quiet for restful sleep. Producing constant air flow, the variable pump offers multiple levels of pressure for a customizable experience. Each pressure cycle is approximately six minutes long..
  • DURABLE CONSTRUCTION SUPPORTS UP TO 300 LBS: Premium vinyl mattress supports up to 300 pounds.The waterproof mattress pad easily fits on an existing mattress or frame. The included air hoses are flexible and non-binding for easy installation..
  • VIVE GUARANTEE: 1 year on pump. 60 days on mattress pad. Unconditional gu....
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Pentair SuperFlo® VS Variable Speed Pool Pump, 342001

  • Variable speed technology costs significantly less to operate. Savings based on variable speed pump compared to a single-speed pump running 12 hours per day at an average of $0. 16 per kWh in a 20, 000 gallon..
  • Ideal for standard pools requiring up to 1. 5 hp pump.
  • Real-Time clock with 24-hour memory retention.
  • Simple, intuitive user interface is easy to program and operate.
  • easy to access electrical connections for simple installation.
  • Three operating speed settings plus override capability.
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Robinair (15401) CoolTech Vacuum Pump - 2-Stage, 93 liters/minute

  • Robinair's CoolTech 2-stage rotary vane design vacuum pump features the power and capacity needed for a wide range of service applications as well as robust construction for a long service life.
  • Powerful 1/3 HP, 115V/220-250V - 60/50Hz thermally protected motor, 94 liters per minute free air displacement, and factory rated to 15 microns for a fast, thorough evacuation.
  • Offset rotary vanes build powerful compression within the pumping chamber - reducing pressure and vaporizing moisture.
  • durable molded polycarbonate base improves pump balance and minimizes vibration.
  • Iso-Valve isolates pump from system with just a quarter turn.
  • Gas Ballast design mixes moisture laden air passing through pump with relatively dry air so compression doesn't cause condensation.
  • 1/4 inch and 1/2 inch male flare inlet fittings, easy to read sight glass, easy access oil fill port, and angled oil drain valve for faster, more complete draining of the reservoir.
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Robinair (15424) CoolTech Vacuum Pump - 2-Stage, 93 liters/minute

  • Robinair's CoolTech 2-stage rotary vane design vacuum pump features the power and capacity needed for a wide range of service applications as well as robust construction for a long service life.
  • Powerful 1/3 HP, 115V/220-250V - 60/50Hz thermally protected motor, 94 liters per minute free air displacement, and factory rated to 20 microns for a fast, thorough evacuation.
  • Offset rotary vanes build powerful compression within the pumping chamber - reducing pressure and vaporizing moisture.
  • durable molded polycarbonate base improves pump balance and minimizes vibration.
  • Iso-Valve isolates pump from system with just a quarter turn.
  • Gas Ballast design mixes moisture laden air passing through pump with relatively dry air so compression doesn't cause condensation.
  • 1/4 inch male flare and 1/2 inch ACME inlet fittings, easy to read sight glass, easy access oil fill port, and angled oil drain valve for faster, more complete draining of the reservoir.
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Robinair (15121A) CoolTech Vacuum Pump - 2-Stage, 236 liters/minute

  • Robinair's CoolTech 2-stage rotary vane design vacuum pump features the power and capacity needed for a wide range of service applications as well as robust construction for a long service life.
  • Powerful 1/2 HP, 115V/220V - 60/50Hz thermally protected motor, 236 liters per minute free air displacement, and factory rated to 15 microns for a fast, thorough evacuation.
  • Offset rotary vanes build powerful compression within the pumping chamber - reducing pressure and vaporizing moisture.
  • durable molded polycarbonate base improves pump balance and minimizes vibration.
  • Iso-Valve isolates pump from system with just a quarter turn.
  • Gas Ballast design mixes moisture laden air passing through pump with relatively dry air so compression doesn't cause condensation.
  • 1/4, 3/8, and 1/2 inch male flare inlet fittings, easy to read sight glass, easy access oil fill port, and angled oil drain valve for faster, more complete draining of the reservoir.
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9milelake Bottled Water System Electric Dispensing Pump System 1 Gallon/Min 40 PSI Water Dispensing Pump with 20 ft 1/4 PE Pipe for Coffee Tea Ice-Make Fridge Refrigerator Water Dispensers

  • This Bottled Water Pump is designed to pump water from commercially available water bottles..
  • Compact for easy mounting Automatic shut off when bottle is empty.
  • Built-in check valve prevents backflow Fits a variety of bottles.
  • Positive displacement pump Smooth flow and quiet operation.
  • Automatic pump operating Easy bottle change.
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biuufish Aquarium Air Pump Adjustable Output Aquarium Bubble 2.5w Ultra Quiet Fish Tank Air Pump with Aquarium Decorations Volcanic Air Bubble Stone Suitable for 10-60 Gallon Fish Tank

  • 【Adjustable Flow Rate】: This air pump with a rated power of 2.5w is energy-saving and efficient. Designed with a adjusting knob, easily to adjust....
  • 【Quiet Air Pump】: This aquarium pump is very quiet, with a noise of only 40 dB. The 4 non-slip rubber feet at the bottom also reduce noise and....
  • 【Abundant bubbles】: The fish tank pump with volcano decor air bubble stone, which can provide uniform and abundant bubbles for fish tank water and....
  • 【Wide Use】: Aquarium pump power 2.5 W, displacement 3L/min, pressure 15 kPa, high reliability, durability, safety and energy saving: long service....
  • 【Complete Air Pump Accessories】: The package contains: 1 x air pump, 1 x aquarium volcano ornament kit, 1 x air stone, 1 x air pipe, 1 x check....
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Welch Vacuum 2546B-01 Standard Duty Pump, 1-Head, 46 LPM, 60 Torr, 115V

  • One-head WOB-L-style piston pump with intake and exhaust catch jars for use in vacuum or pressure applications with gel dryers, concentrators, and rotary evaporators.
  • 46 liter per minute (LPM) free air displacement with vacuum to 60 Torr.
  • Manually adjustable vacuum and pressure levels with gauges.
  • Oil-free pump for operation without oil misting and contaminated oil disposal.
  • 1/4 HP motor accepts 115V, 60Hz input power.
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6V Water Liquid Peristaltic Pump Constant Flow Hose Drip Metering Pump Lab Mini Dosing Pump for Flow Rate Controlled(Green)

  • 【Variable Direction】The delivery direction of the experimental liquid distribution pump is variable, you can control the flow direction through the positive and negative connections.
  • 【Removable Pump Head】The pump head can be removed with a single push, which is very convenient for pump tube replacement and cleaning,Working Environment: Temperature 0-40℃, Relative Humidity 003c80%,Flow Rate: 003e 35ml / min-----Optional Color: White, Yellow, Blue, Green.
  • 【Elaborate Design】Our quantitative delivery pump adopts the design without screw clasp, and there are no valves and seals on the top, which is easier to disassemble and maintain, and it is convenient to replace the tube head.
  • 【Widely Used】These small metering pumps have self-priming function and can be widely used in experiments, biochemical analysis, pharmaceuticals, fine chemicals, and biotechnology fields.
  • 【Quantitative Delivery Pump】Our peristaltic pump is to make the fluid in the hose move in a certain direction by repeatedly compressing the elastic tube. The replaceable tube head can adapt to the transportation of different media, which is convenient for multiple types of work.
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