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Best Positive Displacement Flow Meters

Nalge Nunc Polypropylene Vacuum Pump Aspirator, NALGENE 6140-0010 Aspirator Vacuum Pump PP/PE,

  • HLVP8 single-head high-precision series diaphragm air pump. Series connection flow ≥ 360L/H.
  • Parallel connection flow ≥ 480L/H, the service life of brush motor is 2000H, and the service life of brushless motor is 6000H..
  • Parallel negative pressure≥-0.072Mpa, series negative pressure≥-0.088Mpa, positive pressure≥0.1Mpa, noise≤68db..
  • Using EPDM high-quality diaphragm, it has good resistance to chemicals such as alcohol, acid, alkali, oxidizer, ketone and grease, and poor oil resistance. Good tolerance, dry running, durable, maintenance-free..
  • Principle: HLVP8 series of miniature diaphragm pumps are simply designed according to the principle of positive displacement pumps. By controlling the inlet and outlet of the diaphragm, a power drive is formed and the transmission mechanism pushes the piston to reciprocate, and the intake pressure pushes the diaphragm back and forth to do work to suck and discharge gas..
  • Application areas: transmission of gas, inflation, gas analysis, laboratory equipment, fixed objects, household DIY, etc..
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Argos EV432 E-Vac Replacement 4 L Polypropylene Bottle with Lid, 1.8 m Tubing

  • HLVP8 single-head high-precision series diaphragm air pump. Series connection flow ≥ 360L/H.
  • Parallel connection flow ≥ 480L/H, the service life of brush motor is 2000H, and the service life of brushless motor is 6000H..
  • Parallel negative pressure≥-0.072Mpa, series negative pressure≥-0.088Mpa, positive pressure≥0.1Mpa, noise≤68db..
  • Using EPDM high-quality diaphragm, it has good resistance to chemicals such as alcohol, acid, alkali, oxidizer, ketone and grease, and poor oil resistance. Good tolerance, dry running, durable, maintenance-free..
  • Principle: HLVP8 series of miniature diaphragm pumps are simply designed according to the principle of positive displacement pumps. By controlling the inlet and outlet of the diaphragm, a power drive is formed and the transmission mechanism pushes the piston to reciprocate, and the intake pressure pushes the diaphragm back and forth to do work to suck and discharge gas..
  • Application areas: transmission of gas, inflation, gas analysis, laboratory equipment, fixed objects, household DIY, etc..
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SEAFLO 42-Series Water Pressure Diaphragm Pump w/Variable Flow For Reduced Cycling - 12V 3.0GPM 55PSI

  • 12 Volt, 3.0 GPM, 55 PSI Positive Displacement Pump.
  • Variable Flow With Bypass Technology For Reduced Cycling!.
  • Self-Priming And Capable Of Run Dry Operation.
  • 4 Year Warranty comes standard on all SEAFLO products.
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OASIS MARINE Washdown Deck Wash Pump KIT 12v 70 PSI 5.5 GPM 20 LPM for Caravan Rv Boat Marine Yacht

  • Ideal for cleaning leisure boats,Fish boxes,anchor chains and dinghies..
  • 5 chamber Positive displacement diaphragm pump for smooth and quiet flow..
  • Self-priming,12v pump with pressure switch control.
  • Multi-step corrosion protection and seamless motor body for enhanced protection in any wet environment.
  • Rubber mounting feet for corrosion protection and noise reduction.
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GROZ 115V AC Heavy Duty Electric Oil Drum Transfer Pump | Self Priming | 4 GPM Flow Rate | Built-in 2-inch Bung Adaptor (45550)

  • Heavy duty oil pumps designed specifically to transfer bulk oils, hydraulic oils, antifreeze.
  • Air cooled motor with Thermal Overload protection.
  • Non-corroding Aluminum die cast pump body.
  • A high horsepower to flow ratio assures adequate power to pump viscous fluids at low temperatures..
  • Self-priming, positive displacement design.
  • Pump has an internal bypass valve to bypass flow if the discharge pressure exceeds bypass valve setting.
  • Built-in 2” bung adaptor for mounting directly onto drums and tanks.
  • Can be used to transfer used oil also. Just fitting a screen onto the suction tube makes it effective for transferring used oil..
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Kamoer HLVP6 Low Noise Small Vacuum Pump 12V air Pump brushless Motor high Flow Diaphragm Pump high Performance brushless Motor 8L/min

  • Voltage: 12V,flow: 8L/min, negative pressure 0.06MPa, noise 62db, power 8W, lifetime 5000H..
  • 12V vacuum pump application: beauty industry, gas detection, laboratory experiment, inhalation, industrial automation, product DIY parts, etc..
  • HLVP6 12V vacuum pump high flow rate, low noise, with rubber shock absorber, effective shock absorption. Using high-performance long-life brushless motor, stable performance and durable..
  • HLVP6 series diaphragm vacuum pumps are simply designed according to the design principles of positive displacement pumps. It is mainly suitable for occasions with high requirements for noise and vibration (medical equipment, beauty and health care, laboratory gas analysis equipment, etc.). The core characteristics of the product are low noise, low vibration and long life..
  • This series of products has a larger compression chamber, which enables the product to obtain high flow under the condition of low compression. Thanks to the two core noise reduction technologies (1. Noise reduction technology in the pump.
  • 2. Rubber vibration reduction technology), coupled with a precise balance design, the pump's working noise is effectively reduced..
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Fill-Rite FR310VN 115V/230V 35 GPM Fuel Transfer Pump (Pump Only)

  • 【FEATURES】12V Dc Water Pump positive displacement 3 chambers. 3.0 gallons per minute water flow. The pressure switch is set to 45Psi, 6.74 Max amps..
  • 【SELF PRIMING】The pump self-prime is 9.8 feet (3m) and smooth, silent operation..
  • 【SAFETY FRONT OF MIND】Our pump have certified to CE. Thermally Protected and can run dry without damage..
  • 【WIDELY USED】Great for use in an RV. It is also the best partner of camper, sprayer,garden sprinklers, fertilizers, insect sprays..
  • 【HIGH SERVICE】Enjoy a 4-year warranty. We have a professional team of technical support, if you have any questions, please feel free to contact us, we will reply you within 24 hours.
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Well water pump 12 V / 24 V DC solar water pump with solar cell alternative energy 70 m

  • Design: 3-Chamber Positive Displacement Diaphragm Pump.
  • Inlet Screen: 50 Micron Stainless Steel Inlet Screen.
  • Dimensions L x W x H (in.): 4.09" x 4.09"....
  • Material: High Strength Engineered Plastic.
  • Quick disconnect with "Watertight-Gland" Design Pat Pend.
  • Internal Bypass: 105-110 PSI Max. (7.2-7.5 BARS).
  • Outlet Port: 1/2" (12.7mm) Barbed Fitting.
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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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DC HOUSE 33-Series 12V Water Diaphragm Pump with Pressure Switch 3.0GPM 45Psi 12 Volt Water Pump for RV Marine Yacht Caravan

  • 【FEATURES】12V Dc Water Pump positive displacement 3 chambers. 3.0 gallons per minute water flow. The pressure switch is set to 45Psi, 6.74 Max amps..
  • 【SELF PRIMING】The pump self-prime is 9.8 feet (3m) and smooth, silent operation..
  • 【SAFETY FRONT OF MIND】Our pump have certified to CE. Thermally Protected and can run dry without damage..
  • 【WIDELY USED】Great for use in an RV. It is also the best partner of camper, sprayer,garden sprinklers, fertilizers, insect sprays..
  • 【HIGH SERVICE】Enjoy a 4-year warranty. We have a professional team of technical support, if you have any questions, please feel free to contact us, we will reply you within 24 hours.
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MAXECO-110V 160PSI High Pressure Diaphragm Water Pump Self Priming 80GPH 5LPM-Water Pressure Booster Pump Sprayer for Home/Misting/Caravan/RV/Boat/Marine

  • 1.Technical Parameters: Max Shut off Pressure-160PSI, Max Open Flow-5LPM /80GPH, Voltage-110V/0.55AMP, Maximum head-95m..
  • 2. Self-priming 9 Feet: Allows for usage even if located above water tank. Positive displacement diaphragm pump, capable of being run dry..
  • 3. High Quality : 100% full copper wire high-quality motor,long service life, no leakage, quiet operation. Changeable pressure switch. Spare parts supported..
  • 4. Double Protection: Sealed pressure switch automatically turns the pump off when pressure builds up.Built-in thermal protector.Thermal overload protection automatically stops motor should it overhear due to overload, with auto re-start feature..
  • 5. Application:Marine yachts, RVs,automobiles,household,general industry, agricultural misting ,catering services,distillation equipment,boats, and vans..
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DC HOUSE 42-Series Upgrade 110V AC Water Pressure Pump 5.0GPM 55PSI with Plug Self Priming RV Water Pump 110 Volt for Water Transfer Pressure Booster Camper Home

  • Diaphragm Pump: Positive displacement, 5.0GPM(18.9 liter per minute), 55PSI(3.8 Bar), 110Volt AC with plug for wall outlet..
  • More powerful- Can self priming to 9.8ft which allows for easy lift up to 125ft during use. Its super quiet, thermally protected and can run dry without damage..
  • Smart pressure switch - Built in automatic pressure switch which turns it on immediately when the faucet on. Use water just like you're at home!.
  • Easy to install and and excellent water flow. Use it for everything from doing dishes when camping to cleaning hunting gear to taking showers..
  • AWESOME customer service. Commitment to provide a 4-year warranty for all DC HOUSE WATER PUMP. If you have any questions, please contact us immediately via the order..
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ECO-WORTHY 40-Series 12V Water Pump Electric with On Demand Pressure Switch 4.5GPM 40PSI 12 Volt Self Priming Water Pressure Pump for Home Camping RV Food Truck Equipment Booster Transfer Fresh Water

  • Diaphragm Pump - 4 Chambers, positive displacement, 4.5GPM (17L/min), 40PSI (2.8 Bar), 12V DC. Runs on RV power..
  • High Performance - Can self priming to 9.8ft which allows for easy lift up to 131FT during use. Its super quiet, thermally protected and can run dry without damage..
  • Smart Pressure Switch - Turns on and off on demand. Auto turns off once pressure reaches 40-PSI. Use water just like you're at home!.
  • Easy to install and excellent water flow. A handy tool for agriculture spraying, water transfer, home, camping, food truck. It is worth it..
  • AWESOME Customer Service - Commitment to provide a 4-year warranty for all WATER PUMP. If for any reason you are not satisfied contact us immediately via the order..
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