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Linsheng – Quick Installation Tips For Diaphragm Pumps
What is a pneumatic diaphragm pump?

  Pneumatic Double Diaphragm Pumps (AODD) are used to transport cleaners and cleaners used in oils, gases, paints, ink coatings, wastewater and car wash applications. linsheng below describes three tips for quick installation of diaphragm pumps for your reference:

  Tip #1: Check the size and pressure of the intake manifold

  Inlet pressure plays a crucial role in making the most of the pump. The diaphragm pump operates at a 1 to 1 ratio, which means that the inlet pressure of the feed pump is directly related to the fluid pressure at the pump outlet.

  Example: If the target outlet pressure of a 1 inch, 50 gallon per minute (gpm) pump is 100 psi, the inlet pressure to the pump air valve must be greater than or equal to 100 psi. Example: If the target outlet pressure of a 1 inch, 50 gallon per minute (gpm) pump is 100 psi, the inlet pressure to the pump air valve must be greater than or equal to 100 psi.

  A system back pressure that is too small may cause the pump to operate ineffectively because the ball check may not be able to check quickly. If the fluid pressure overcomes the pump’s air pressure, too much back pressure can cause the pump to stall. To control the flow and pressure of the AODD pump, install an air regulator assembly to control the intake pressure.

  Tip #2: Check muffler icing and restrictions

  A muffler is recommended during installation because the diaphragm pump produces noise at full speed. AODD air motors require compressed air to operate. However, rapid changes in temperature occur when compressed air enters the air valve and is discharged through the muffler through the pump. When the muffler is venting, the air temperature is below freezing and may cause problems associated with icing. This is bad because it will reduce pump efficiency. You may notice problems related to icing in the following situations

  Unstable operation, strange or unpredictable

  There is obvious frost outside the silencer

  Inlet air has high moisture content

  Reducing the air pressure of the pump is one of the fastest and most effective ways to reduce icing.

  Here are the suggested solutions to eliminate these issues:

  Reduce pump air pressure

  Increase pump size to run at lower speeds

  Use the exhaust pipe to vent air to a remote location

  Add an air filter with a water trap and drain to collect condensate

  Install an air heater to raise the exhaust temperature above freezing

  Adjust the pressure dew point temperature with an air compressor dryer

  Tip #3: Ensure proper pipe and pipe size

  Here are some of the things that the user should know about the size of the pump tubing and tubing:

  Pump inlet and outlet fluid port diameters vary according to the required flow rate

  The inlet and outlet hose sizes must match the pump size

  You should know the correct size at the time of installation so that you don’t need to make changes later.

  Example: If a 1-inch pump is connected to a half-inch inlet hose, the pump will not operate at full capacity without cavitation. This risk increases significantly as the desired viscosity of the fluid increases. In this example, a 1-inch pump should be connected to a 1-inch inlet and outlet hose to prevent cavitation.

  
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Linsheng   – Quick Installation Tips For Diaphragm Pumps
      What is a pneumatic diaphra ...
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