Linear Diaphragm pumps

A linear diaphragm pump has the unique feature that the drive / motor itself has no wearing parts. Linear diaphragm pumps work on the principle of a magnetic shuttle held by the diaphragms of opposed heads. On either side of the shuttle is an electromagnetic which is energised by an alternating voltage oscillating at 50 or 60 Hz. The magnetic shuttle moves linearly between the poles of the electromagnet attempting to close the magnetic field at the same frequency of the applied voltage. This motion is used to move the diaphragm inside the linear diaphragm pump. With no wearing drive parts the life of the pump is determined by life of the diaphragm. A second feature of linear pumps is that the stroke is not constant. It is greatest at open flow and reduces with increasing pressure or vacuum. Compared to a constant stroke pump, for example a DC motor driven diaphragm pump, the flow curve is steeper since the compression ratio decreases with increasing pressure. Typical maximum differential pressures of a linear diaphragm pump is ± 500 mbar. Low working pressures and a zero-wear drive combine to provide a linear diaphragm pump with its greatest advantage: extremely long life. The larger pumps will typically run over 20,000 hours, whilst the small models will run well above this level. Service kits are available which comprise of new diaphragm, head and valves available in our store category to the left. Essentially once a service is complete, the linear diaphragm pump, from a life perspective, is new.

See below a wide range of New units available form several manufacturers including Thomas, Gast, Medo, Hiblow, KLC, Hakko and more.  If you are looking for an item not shown please let us know and we can source it for you.


Thomas Linear Diaphragm Pumps

Thomas is the Leading respected manufacturer of many air pumps and other products. Their pumps are high quality and long lasting. 

 Available in 40 LPM, 60 LPM, and 80 LPM. 

Buy these now here:  AP-40  $259.99  
                                  AP-60   $279.99
                                  AP-80   $299.99

Specs are below.

Model: AP-40 Part # 150131
Flow at rated pressure: 1.6 cfm / 45.3 LPM
Rated pressure: 3.4 psi
Motor Type: Linear drive
Nominal voltage: 115V 60HZ
Consumption at rated pressure: 0.78A / 29W
Net weight: 10.3 lb
Sound level at rated pressure: 34 dB(A)
Product Dimensions: 7.48 L x 6.77 W x 7.83 H
6 ft power cord with plug Included

7in. outlet hose coupling   Hose Clamps  #10-32 x 1/4 screw   Operation manual
This model is a replacement for:

Thomas 5040A
Thomas LP-40
Secoh SLL-40
Blue Diamond ET 40
Medo LA-45B
Other 40 LPM units

Thomas AP-60 Specifications    Model: AP-60 Item # 50132
Flow at rated pressure: 2.3 cfm / 60 LPM
Rated pressure: 2.13 psi
Operating range: 1.45 to 4.35 psi
Motor Type: Linear drive
Nominal voltage: 115V 60HZ
Consumption at rated pressure: 0.54A / 43W
Net weight: 10.9 lb
Sound level at rated pressure: 34 dB(A)
Product Dimensions: 8.58 L x 7.01 W x 7.84 H
6 ft power cord with plug Included

7in. outlet hose coupling  Hose Clamps  #10-32 x 1/4 screw  Operation manual
Replaces:

Thomas 5060A
Thomas LP-60


Thomas AP-80 Specifications  Model: AP-80 Item # 150133
Flow at rated pressure: 3.00 cfm / 80 LPM
Rated pressure: 2.13 psi
Operating range: 1.74 to 4.35 psi
Motor Type: Linear drive
Nominal voltage: 115V 60HZ
Consumption at rated pressure: 0.78A / 64W
Net weight: 10.9 lb
Sound level at rated pressure: 35 dB(A)
Product Dimensions: 8.58 L x 7.01 W x 7.84 H
6 ft power cord with plug Included

7in. outlet hose coupling  Hose Clamps  #10-32 x 1/4 screw  Operation manual
Works as a replacement for the following models:

Thomas 5078S
Thomas 5080
Thomas LP-80H


MEDO Linear Piston Compressors

These are Ideal for Small ponds, septic tanks, and de-icing.

These compressors combine outstanding performance with great value!
• Ultra quiet operation with very low energy usage
• Long life, even in continuous applications with minimal maintenance
• Operation at deeper than recommended depths will require more frequent replacement
of diaphragms

WE also have these available complete with Sink tube and Diffusers as well! Check out our listings for EasyPro Aeration Products to find this already bundled kits.

Medo Linear Piston Compressors are the highest quality air compressors available on the market today! High quality, continuous duty piston linear aerators are a prefect choice for summer and winter aeration needs.

These compressors utilize a small piston to pump air. They operate on electromagnetic oscillation witch eliminates sliding parts there by maximizing energy efficiency and extending motor life. It is common for them to operate continuously for seven to nine years.

Several advantages including:

Suitable for ponds and tanks 3000-7500 gallons
Super Quiet — you can barely hear them from only 5' away
Energy Efficient — operates for only pennies per day
Very Reliable — motors - Service life expectancy of 6 years with proper installation and periodic maintenance
Weather Resistant and Durable UL listed - for outdoor use / Does not have to be covered or protected.

Specifications:

Exclusive 3 Year Limited EasyPro Warranty 
Compressor draws only 45 watts Weather proof compressor housing 115V AC - 60hZ 5' power cord with plug
3/4" Air Outlet Size Rubber Elbow is included for outlet connection 1.8 CFM Max Output Maximum depth of 6ft
Approximate dimensions: 8.15" W x 8.07" H

Compressor                 Cfm Air Flow @ Water Depth Ship
Part #    Watts Outlet Size 0' 2' 4' 6' 8' Depth PSI     Weight  Price / BUY IT NOW
ML28      26 5/8" 1.3 1.2 0.8 0.5 - 6' 2.6                   8 lbs.                $289.49
ML45      45 3/4" 1.8 1.7 1.5 1.1 - 6' 2.6                   8 lbs.                $338.39
ML60      60 3/4" 2.5 2.5 2.3 1.4 0.5 8' 3.5                13 lbs.            $433.19
ML80      86 3/4" 3.0 2.9 2.8 2.1 1.2 8' 3.5               14 lbs.             $456.69
ML100    95 1" 4.6 4.5 4.2 3.7 1.8 9' 4.0                   22 lbs.            $686.49
ML120    118 1" 5.2 5.1 4.8 4.5 2.6 9' 4.0                 22 lbs.           $719.29
ML200    215 1" 9.9 9.1 8.4 7.3 6.0 10' 4.4               28 lbs.           $1165.79


KLC Series Linear Diaphragm Pumps

Linear Diaphragm Air Compressors - These new compressors can supply adequate oxygen levels and circulation during hot summer months or deicing during freezing months.

When looking for great performance and quiet operation at a great value, search no further. The new KLC compressors from EasyPro feature energy efficient, quiet and reliable operation for aerating koi ponds, water gardens, fish tanks, aquariums or shallow larger ponds.

Power Cord / Volts: 6ft Grounded 120 V cord with plug
Outlet Size: 5/8" Warranty: Three (3) Year Limited Manufacturer's Warranty
Ultra quiet operation with very low energy usage
Long life, even in continuous applications with minimal maintenance
CUL and UL listed for outdoor use -- DOES not need to be covered or protected.

  Compressor Outlet cfm Air Flow @ Water Depth of: Ship
Part # Watts Size Nominal) 0' 2' 4' 6' 8' 10' 12' 14' Weight Price BUY IT NOW
KLC25 23 5/8" 1.3 1 0.8 0.6 0.4 0.1 — —                       7 lbs.  $195.79 
KLC40 36 5/8" 2.1 1.9 1.6 1.3 0.9 0.6 0.2 —                  13 lbs.  $235.79 
KLC60 60 5/8" 3.1 2.8 2.4 2.0 1.6 1.2 0.7 0.3                 15 lbs.  $281.89 
KLC80 70 5/8" 3.7 3.4 3.1 2.8 2.4 2.0 1.5 0.9                 15 lbs.  $319.79 
KLC100 112 5/8" 4.2 4.1 4.0 3.6 3.1 2.5 2.0 1.2             21 lbs.  $442.19 
KLC120 130 1" 4.9 4.8 4.6 4.3 4.0 3.5 3.0 2.9                 21 lbs.  $587.39



GAST EasyPro Diaphragm Compressors

Both the DC22 and DC12 come with a one year warranty
Brass barbed adapters included on both models for easy connection to 3/8" tubing
DC22 Model:
• Small, continuous duty diaphragm compressor is surprisingly powerful
• The 1/20 hp motor draws only one amp electric but operates up to 12' deep and produces .7 cfm air flow
• Permanently lubricated ball bearing motors designed for years of trouble free service
DC12 Model:
• Oil-less compressor works well for continuous Needs
• Higher pressure allows for aeration in ponds up to 35' deep
• Compressor comes with 6' power cord and inlet air filter


Part #             Description               Voltage     Amps   Ship Weight     Price BUY IT NOW
DC22       1/20th hp compressor     .7    115       1           7 lbs.           $319.99
DC12       1/8th hp compressor       1.1  115       4.2       12 lbs.          $474.99





HiBlow USA Linear Diaphragm Pumps

These pumps are designed specifically for pressure applications and contain only an exhaust port. Inlet air is pulled through an orifice which cannot be plumbed into a pneumatic system.

All HIBLOW pumps use our tried and true linear diaphragm design that is oil-free, quiet, power efficient, and incredibly durable. Whether used continuously, or as an intermittent function, HIBLOW pumps provide industry-leading service life.

Standard                                    Max Cont. Op.        Power    Noise Level
Pump Models  Max Flow (lpm) Pressure/Vac (kPa) (Watts)  (dBA @ 1m.)Weight (kg)    PRICE

HP-20         32                15                17            32            3.2                $240.00
HP-40         80                20                38            32            5.7                $270.00
HP-60         100              25                51            35            7                   $299.00
HP-80         120               25                71            36            7                   $349.99 
HP-100       110              25                100          38            8.5                $430.00
HP-100LL   130               30                75             42            9                  $449.99 
HP-120       150              25                125          40            8.5               $439.99
HP-120LL   150              30                  100           45            9                  $459.99 
HP-150       200               30                155          47            9                  $645.00
HP-200       240               30                250          48            9                  $698.99



Blue Diamond LINEAR AIR BLOWERS AND ACCESSORIES

Linear diaphragm air pumps from Blue Diamond Pumps Inc are designed for use in sewage aeration applications. Aeration is crucial in the treatment of wastewater - a supply of oxygen is essential in allowing aerobic bacteria to decompose matter, leaving the water clean. The linear range is also ideal for medical applications where a high flow at low pressure is required, such as the inflation of airbeds and CPR mattresses.

THE ET SERIES OF AIR PUMPS
The ET series range of air pumps ensures that there is plenty of water movement in wastewater applications; this boosts oxygen levels in the water, allowing aerobic bacteria to decompose. When used in medical applications, the ET series provides a high low at low pressure.


The Enviro ET30 air pump helps to increase the amount of oxygen in the water. Providing a clean, oil-free air source, it is exceptionally quiet in operation, as low as 35dB even when running continuously. The ET30 is easy to service with a competitively priced service kit and is also supported by our two-year warranty. With its weatherproof, robust construction it makes an ideal wastewater pump.
Max Flow: 1.06 cubic feet per minute
Max Pressure: 0.15 bar
Weight: 4.0 kilograms
Dimensions (LxWxH): 8.18" x 5.90" x 7.00"
Connector Size: 0.55"
Power: 25W

BUY this now for $129.99

The Enviro ET40 air pump helps to increase the amount of oxygen in the water. Providing a clean, oil-free air source it is exceptionally quiet in operation, as low as 35dB even when running continuously. The ET40 is easy to service with a competitively priced service kit and is also supported by our two-year warranty, With its weatherproof, robust construction it makes an ideal wastewater pump

Max Flow: 1.41 cubic feet per minute
Max Pressure: 0.15 bar
Weight: 4.3 kilograms
Dimensions (LxWxH): 8.66" x 6.10" x 7.48"
Connector Size: 0.55"
Power: 30W
BUY this now for $149.99

The Enviro ET60 air pump helps to increase the amount of oxygen in the water. Providing a clean, oil-free air source it is exceptionally quiet in operation, even when running continuously. The ET60 is easy to service with a competitively priced service kit and is also supported by our two-year warranty. With its weatherproof, robust construction it makes an ideal wastewater pump.

Max Flow: 2.12 cubic feet per minute
Max Pressure: 0.17 bar
Weight: 6.0 kilograms
Dimensions (LxWxH): 7.99" x 6.49" x 6.02"
Connector Size: 0.71"
Power: 55W
BUY this now for $179.99


The Enviro ET80 air pump helps to increase the amount of oxygen in the water. Providing a clean, oil-free air source it is exceptionally quiet in operation, as low as 35dB even when running continuously. The ET80 is easy to service with a competitively priced service kit and is also supported by our two-year warranty. With its weatherproof, robust construction it makes an ideal wastewater pump.

Max Flow: 2.83 cubic feet per minute
Max Pressure: 0.10 bar
Weight: 7.0 kilograms
Dimensions (LxWxH): 8.26" x 7.28" x 6.73"
Connector Size: 0.71"
Power: 75W
Buy it now $167.00

The Enviro ET100 air pump helps to increase the amount of oxygen in the water. Providing a clean, oil-free air source it is exceptionally quiet in operation, as low was 35dB even when running continuously. The ET100 is easy to service with a competitively priced service kit and is also supported by our two-year warranty. With its weatherproof, robust construction it makes an ideal wastewater pump.

​Max Flow: 3.53 cubic feet per minute
Max Pressure: 0.10 bar
Weight: 8.5 kilograms
Dimensions (LxWxH): 9.37" x 7.71" x 6.96"
Connector Size: 0.71"
Power: 80W
Buy this now for $229.99


The Enviro ET120 air pump helps to increase the amount of oxygen in the water. Providing a clean, oil-free air source it is exceptionally quiet in operation, as low as 35dB even when running continuously. The ET120 is easy to service with a competitively priced service kit and is also supported by our two-year warranty. With its weatherproof, robust construction it makes an ideal wastewater pump.

Max Flow: 4.24 cubic feet per minute
Max Pressure: 0.10 bar
Weight: 9.5 kilograms
Dimensions (LxWxH): 10.43" x 8.36" x 7.79"
Connector Size: 0.71"
Power: 90W
Buy it now $197.00 

The Enviro ET150 air pump helps to increase the amount of oxygen in the water. Providing a clean, oil-free air source it is exceptionally quiet in operation, as low as 35dB even when running continuously. The ET150 is easy to service with a competitively priced service kit and is also supported by our two-year warranty. With its weatherproof, robust construction it makes an ideal wastewater pump.

​Max Flow: 5.30 cubic feet per minute
Max Pressure: 0.15 bar
Weight: 9.0 kilograms
Dimensions (LxWxH): 10.07" x 7.87" x 8.74"
Connector Size: 0.71"
Power: 160W
BUY this now for $369.99



NEW Thomas 927 Series Diaphragm pumps & compressors

Capacity up to 1.24 cfm / 35.1 l/min
Vacuum to 22.4 in.Hg / -758 mbar
Pressure to 40 psi / 2.8 bar​
Oil-less operation
Permanently lubricated bearings
Field service capability
Stainless steel valves and aluminum valve plate
Lightweight die cast aluminum head and diaphragm hold down plate
Long-life diaphragm
Inlet filter
Balanced for smooth, low vibration operation
6 ft. grounded cord and plug
115 V, UL recognized motor and thermal protector
927CA18  BUY THIS NOW $495.99
927CD18  BUY THIS NOW $499.99