# Hand Pump Volume

Not Reviewed
Pumped Volume =
Hand Pump Volume
Variable Instructions Datatype
(V)"Volume Desired from hand pump" Decimal (gal)
(c)"Pumps or Cranks on the hand pump for VPC" Decimal
(vpc)"Specified Volume per number of Cranks or Pumps" Decimal (gal)
Type
Equation
Category
vCommons
Contents
3 variables
Rating
Copied from
ID
KurtHeckman.Hand Pump Volume
UUID
a1bf7257-f741-11e5-9770-bc764e2038f2

The Hand Pump Volume formula computes the number of pumps or cranks (depending on the pump type) to pump the desired volume (V) based on the known cranks or pumps (c) per specified volume (VPC)

## Directions

Enter the following information:

• (c) - This is the specified number of cranks or pumps on the hand pump to produce the VPC.
• (VPC) - This is the specified volume pumped with the specified number of cranks or pumps  (c) on the hand pump
•  (V) - This is the desired volume of liquid you wish to have pumped.
This calculator will then compute the number of cranks or pumps needed to pump the volume you wish.

I don't know my VPC:  If your pump has documentation, it may tell you the volume per pump.  In some cases it says things like 10 gallons in 100 pump (cranks).  In this case you would enter 100 for c and 10 for VPC.  If this isn't in your documentation, it's easy to derive.  Take a container of known volume.  I suggest a 5 gallon bucket, and count how many pumps it takes to fill the bucket.  Note: do not count the priming pumps before the flow begins.  In this example, the VPC would be 5 gallons and number of pumps (c) would be the number of pumps it took to fill the bucket.