Grains per gallon is the business standard approach for talking about water hardness.
Water softener grains per pound salt.
I know it sounds complicated but in essence it means how much of the resin the softener can recharge with one pound of salt.
A water softener softening 75 gallons of water per day that has 10 grains of hardness per gallon will use 5 ounces of salt to remove the hardness accumulated per day.
Jumping mg l by 17 1 will change it to gpg.
For residential application having up to 4 grains of hardness would still be considered soft water.
For example a family of four uses 75 gallons of water each per day 300 gallons per day.
The efficiency of the softener can be simply described as the ratio of recovered capacity per pound of salt.
Contingent upon where a water test is performed this data will be accounted for in mg l milligrams per liter or gpg grains per gallon.
If we take the same softener and regenerate it with 6 pounds of salt then we would make 2000 gallons of slightly hard water or about 333 gallons per pound of salt.
The same goes if you use more water than an average family of four in one month.
Speaking of regeneration when you have to do a backwash on a water softener of this size you will need at least 30 36lbs of salt per cubic foot of resin.
One grain of hardness is equal to 1 7 000 pound of rock.
Softeners of old might be rated at 3 000 grains per pound gr lb.
How is the hardness of water measured.
What does the grain capacity of a water softener mean.
A water softener will use approximately 1 pound of salt to remove 2 400 grains of hardness from its water softening resin.
This of course is borne out in the typical rating of 24 000 grains on an eight pound per cubic foot setting.
Water softener efficiency is a term generally used to rate a water softener by the relationship to its recovered capacity per pound of salt nacl used in regeneration.
What this means is a 32 000 grain capacity water softener will probably only deal with about 28 000 30 000 grains before regeneration is required.
The hardness of water is measured in grains per gallon gpg.
If the hardness level of your water is above 10 grains per gallons then you will require more than a 40 pound bag of salt monthly or more than 10 pounds of salt per week.
The rated capacity of a softener is the maximum number of grains of water hardness the unit can remove prior to regeneration.
So if your water softener needs to regenerate once per week you should only have to add one 40 pound bag of water softener salt per month.
Sound a bit confusing.
The consumer realizes upon receiving the softener that the most efficient settings are to use 6 pounds of salt per regeneration and to set the system capacity to 20 000 grains.
This is measured in grains so how many grains you can recover during the regeneration.
