VN Series 3600 to 8400 Specifications
Tank (Standard Non Code Vessels).
The non-code vessel
shall be A36 carbon steel or better rated at 100 psi working pressure
designed to a factor of safety of 3.0.
Tank (Optional Code Vessels).
ASME code stamped
tanks shall be available. Tank shall be clearly specified as code or
non-code with a specified working pressure. Tanks “built to ASME code
but not stamped” shall not be acceptable as ASME code. An ASME U1 form
shall be provided with each ASME code tank.
Tanks shall be prepared for internal and external coating with a SPCC 11
near white sand blast. Internal and external coating shall be two 3 - 4
mill coats of white Series 20 Tnemic Epoxy. Paint shall be applied
according to manufacturer’s recommendations.
Internals (VN 1200, 48”Ø and up).
The bottom distributor shall be
header lateral design with SCH 80 PVC header or hub piping and SCH 40
PVC slotted laterals. The slots
shall be .012" - .016" wide to retain mineral and the total slot area
shall be equal to or larger than the unit pipe size.
The piping size of the header lateral system shall be greater than or
equal to the outlet pipe size. A SCH 80 PVC
top dome splash distributor with an opening equal to or larger than the
unit pipe size shall be installed in the mineral tank.
models with a –4F or –6F designation the inlet and outlet connection
shall be 4” or 6” flanges and the pipe shall be welded flanged SCH 40
black iron pipe. Piping shall be continuously seal welded and
hydrotested at the vessel working pressure. Piping shall have the same
exterior coating as the vessel. Piping shall be a combination of welded,
threaded and Gruvlok fittings.
The resin shall be sodium form polystyrene 8% divinyl benzene cross
linked resin with clear spherical beads. Resin beads shall be 16-50 US
Standard Mesh with a particle size range of 0.3 to 1.2 mm. The resin
shall be clean and packaged in sealed plastic bags weighing 55 lbs or
less. Underbedding shall be #20
washed flint gravel sieved between 1/8” and 1/16”.
shall be Water King DV Series cast iron body valves with screwed (or
flanged if model number contains –F) connections. The valve can be
operated by air or water. The diaphragm shall be preformed, stress
relieved Buna N on Nylon of a long life. Static seals shall be Buna N.
Internal parts shall be stainless steel and brass. Working pressure on
the valve is per MSS SP88, class 125, category B. Maximum temperature
Diaphragm valves shall be operated by a rotary pilot valve (stager) with
multiple ports through which control fluid is directed, thereby
operating the diaphragm valves installed in a process system. Standard
units shall use stagers constructed of durable, non-corroding,
self-lubricating material for long, maintenance free life. The stager
shall function by opening and closing its ports, singly or in
combination, in a sequence that accomplishes the five cycles of
softening. The stager shall use either water or air for the operating
fluid. Process fluid, if pressurized, and not damaging to the internal
parts of the stager or diaphragm valve, may be drawn from the main line
to the inlet of the stager. Otherwise, an independent source of control
fluid is required. The pressure of the control fluid must be equal to
or greater than the line pressure of the system. The stager enclosure
shall be a 10” x 8” x 6” NEMA 4 fiberglass control box which houses both
the stager and the timer. Maximum pressure shall be 100 psi with a
maximum temperature rating of 150oF. Ports are 1/8” NPT.
Power shall be either 120 VAC/60 Hz or 230 VAC/50 Hz. Flexible tubing
(¼” O.D.) shall connect stager ports to diaphragm valves. To increase
the closure speed, Humphrey® pilot valves shall be installed on all
The brine system shall be of the Accumaticä
high grid plate design. The brine tank shall be blow molded or
rotationally molded HDPE, including a cover. The system shall include a
SCH 80 PVC float operated brine valve to control refill shut-off and
refill flow rate. Brine volume is to be repeatedly accurate within 10%
and not dependent on salt bed void space for brine volume. Brine draw is
to volumetrically controlled, not timed.
softener shall be equipped with an internal brine distributing system.
The brine distributing system shall be separated from the inlet
distributor and shall be designed to evenly distribute the brine over
the entire resin bed and shall be of the header-lateral design.
Maximum temperature shall be
shall be 25 to 100 psi.
shall be drawn directly into inlet of the mineral tank using an EE
series external ejector. This venturi type device shall be SCH 80 PVC
with 1” or 1 ½” FNPT connections. The venturi shall be chemically bonded
to the housing. The venturi shall be precision machined. Maximum
temperature shall be 140°F.
The external injector shall provide both brine flow and brine dilution.
systems shall consist of one mineral tank with attached valve nest and
one brine tank. Simplex systems shall be controlled using the ERCt
99-day electronic timer and an MPV1 stager both housed in a single NEMA
4 enclosure. Regeneration shall be initiated at preset times of the
day. Manual regeneration shall be available at the stager.
systems shall consist of two mineral tanks with attached valve nest and
one brine tank with a brine director. Twin systems shall be controlled
using the ERCt 99-day electronic timer and two MPV1 stagers all housed
in a single NEMA 4 enclosure. Regeneration shall be initiated at preset
times of the day. Softeners run in parallel and are out of service only
during regeneration. Simultaneous regeneration is prevented by setting
different regeneration times for each unit. Manual regeneration shall be
available at the stager.
Twin Alternating Demand Initiation.
Twin alternating systems shall consist of two mineral tanks with
attached valve nest and one brine tank with a brine director. Twin
alternating systems shall be controlled using the ERCd electronic
controller and an MPV3 stager housed in a single NEMA 4 enclosure.
Regeneration shall be initiated
based on the total quantity of water treated by the softener.
One softener is in service and one in regeneration or standby. Manual
regeneration shall be available at the stager. Twin alternating systems
provide a continuous flow of softened water with no bypassing of
unsoftened water during regeneration.
Multiple Tank Demand Initiation.
Regeneration shall be initiated
based on the total quantity of water treated by the softener. For pipe
sizes 3” and below, the VN Series uses PW series flow meters with the
ERCd controller, and MPV 1 or MPV3 stager. For 4” and 6” and larger
piping the VN series uses the PW 400S and 600S saddle mounted flow
meters with the WK520-84 controller, stagers and ARC cycle timers.
Twin alternating systems provide a continuous flow of softened water
with no bypassing of unsoftened water during regeneration.
A standard soft water soap test kit shall be provided. A complete set of
instructions, including installation, loading, start-up, adjustments,
servicing, and a parts list shall be provided with the equipment.
company that has continuously manufactured water softeners for at least
10 years shall construct the equipment.
Pressure gauge and test tap kit.
kit containing two liquid filled, stainless steel pressure gauges with 2
½” Ø face, two brass ball valve sample taps with hose barb connections
and associated brass connection fittings shall be provided for mounting
in the 1/4" FNPT predrilled and tapped ports in the inlet and outlet