Understanding Water King’s Media
includes model and part number explanations.)
A filter consists of a vessel,
containing media, with valves to facilitate backwashing. Media filters can be
backwashed or cleaned and then returned to service. All of Water King’s filters
are vertical tank, down flow filters.
Filter Vessels - The three different vessel
with top mount valves
with side mount valves where the water is piped to the top and bottom of the
vessel and the valves are side mounted. This piping is commonly called “face
Steel tanks with face
piping and side mount valves.
Filter Valves - Water King uses
three types of fully automated valve systems:
The Flow Master Valve
is a plastic top mounted valve with ¾” or 1” pipe. It is installed top mounted
on fiberglass tanks.
The Task Master III
stainless steel valve can be top mounted on fiberglass tanks or side mounted as
a part of face piping on fiberglass or steel vessels. The Flow Master and Task
Master III are commonly called five cycle valves since they operate to cause all
five cycles of softening or filtration to occur in a single valve.
Valve nests for
filters are mounted in the face piping of a system and perform all of the
functions of the five cycle valves by opening and closing six valves for a
softener or five valves for a filter. Standard valve nest systems use cast iron
diaphragm valves controlled by a multi port pilot valve or stager.
Filter Systems - These vessels
and valves combine to create six filter configurations or lines.
The Bayou Series
Filters (FBF) have the Flow Master valve in a top mount configuration on a
The RF series filters
(FRF) have the Task Master III valve in a top mount configuration on a
The MF series filters
(FMF) have the Task Master III valve in a side mount configuration on a steel
The MF series filters
using fiberglass vessels (FMF FG) have the Task Master III valve in a side mount
configuration on fiberglass vessels.
The VN series filters
(FVN) have a valve nest side mounted on a steel vessel.
The VN series filters
using fiberglass vessels (FVN FG) have a valve nest side mounted on a fiberglass
Water King uses
six types of media, neutralizing (-N), filter AG (-T), sand (-S), activated
carbon (-C), manganese green sand (-I), and multi media (-MM).
for the FBF, FRF, FMF and FMF-FG lines consist of the letter designation, the
size which is a number corresponding to a softener capacity of the same size,
and the media. Thus a 16 inch diameter fiberglass sand filter with a top mount
Task Master III would be an FRF 120 – S, where the 120 represents a 16 inch
diameter softener. Model numbers and corresponding diameters are located
For valve nest
systems the diameter is simply listed so that an FVN 60 – I is a 60-inch
diameter steel tank manganese greensand valve nest filter.
Filters Without Media
filter part numbers follow a similar set of designations for the valve and
vessel type and media in the vessel. Click here to view
media) Part numbers.
For a given
filter model, the only variation between the different types of media is the
backwash rate. There are three standard backwash rates for each vessel size
yielding backwash rates of 8-10 , 10-12, and 15 gpm/ft2. These values are
tabularized for each model. A filter
vessel and valve without media does not carry a media designation, no dash or
extension to the model number, and the fourth digit of the part number is a
zero. If you wish to specify a filter (less media) use the part number with the
fourth digit as zero and add an extension specifying the backwash flow rate. For example, an FMF 300 filter without media set up for
35 gpm would have a part number of 929030-35 with 929 for the FMF series, 0 for
no media, 30 for a model 300 at 30” diameter, and –35 for 35 gpm back wash. A
table is given to explain the part numbers.
Note the list of number designations for media types.
we wanted our filter to have a 125 psi ASME code vessel we would add and
extension – 125S making the part number 929030-35-125S, (S means ASME code with
a Stamp.) A list of part number and model number extensions is provided
and can be found HERE.
For a filter
with media we use the fourth digit to designate the media. For example a 929530
is an FMF 300 –S or 30” diameter steel tank sand (5) filter with a Task Master
III valve. The backwash designation is not required since specifying the media
constrains the backwash rate to match the media.
A table is given to explain the part numbers.