[ CLIENT NAME ]
2.03
[ PROJECT NAME]
DATE
IRRIGATION COMPONENTS AND/OR SYSTEMS
NOTE TO SPECIFIER: RED INDICATES REQUIRED EDIT. MODIFY SIZE(S) AND
MODEL AS NEEDED. ADJUST TEXT TO BLACK UPON REVIEW.
A.
Self-Cleaning Filter
1.
2.
General Information
a.
Provide self-cleaning filter as per the specification.
b.
Self-cleaning filter shall be comprised of components as outlined in this
specification in order to meet the hydraulic demands and requirements of
the irrigation system it services.
Self-Cleaning Filter
a.
Self-cleaning filter specifications include but are not limited to:
1)
Filter shall consist of a filter body with inlet, outlet, and access nozzle
connections.
a)
Filter body shall be constructed from stainless steel 304L or better.
2)
Filter shall feature a parallel flange configuration to accommodate simple
3)
installation and maintenance.
Filter shall utilize a two-stage screening process consisting of both coarse
screen and fine screen filtration. System shall be capable of filtering
suspended solids from a water source.
a)
Coarse screen shall be constructed from stainless steel 304L, and
offer 2.7 square feet of total screen area. It shall have 1/4 inch
perforations, and shall protect the fine screen from large particles in
the water source.
b)
Fine screen shall be constructed from stainless steel 316L or better,
and consist of multiple layers of wire mesh diffusion bonded
(sintered) to a perforated reinforcement plate.
c)
Fine screen shall consist of a rigid cylinder offering x.xx’ (see
product Tech Spec chart) square feet of total screen area.
d)
Fine screen shall filter to xxx micron.
4)
Filter shall be furnished with a particle remover capable of scanning the
interior of the screen element and removing buildup.
5)
Vacuumed debris from particle remover shall be expelled via flush
valve.
a)
Flush valve shall be an electrically actuated 1.5 inch (A, B, & C
b)
6)
Models) OR 2 inch (D, E, F ,G, & H Models) ball valve. Valve shall
have an open/close time of 1.5 seconds, and operate with an input
voltage of 24 VAC.
Valve shall have a stainless steel CF8M ball and housing, with a
stainless steel 316 stem.
Electronic backwash controller shall monitor and activate cleaning
cycles.
IRRIGATION COMPONENTS AND/OR SYSTEMS
SECTION 32 84 23
PAGE 1
[ CLIENT NAME ]
[ PROJECT NAME]
DATE
a)
b)
Controller shall be capable of operating a single filter or two
filters in parallel.
Controller shall be capable of activating a backwash cycle by
each of the following: periodic timer, differential pressure, and
manual activation.
c)
7)
Controller shall be mounted in a 9.5 x 7.8 x 4 inch weather resistant
enclosure, and operate on 115 or 230 VAC.
d)
Output voltage shall be 24 VAC or 12 VDC.
e)
Output terminals shall include C (common), 1, 2, M (master), and A
(alarm).
f)
Controller shall include a display monitor to indicate controller status
and display the backwash count.
Internal components including the particle remover and compression
packing shall be constructed from stainless steel 304L or better.
8)
Pressure rating shall be 150 PSI or greater with a temperature rating
of 200 degrees Fahrenheit or more.
9)
Overall body length shall be xx (see product drawings for length) inches,
and overall body height shall be xx (see product drawings for height) inches,
with a shell diameter of xx (see product drawings for diameter) inches. The
body shall have x” inlet and outlet flanges with a spacing of xx (see product
drawings for spacing) inches. 1/4 inch FNPT threaded connections shall be
located on the nozzles for instrument measurement.
10)
(Optional filter assembly, remove this section when specifying filter
without assembly) Filter package shall include a factory assembled
filter assembly specifically designed for filter. Assembly to include
bypass plumbing and valves.
a)
Bypass pipe and fittings shall meet ASTM A-53 Grade B steel
pipe specifications. Flanges shall be ANSI 150 psi-rated. Pipe
shall be schedule 40 or heavier.
b)
Manifold shall be polyester coated carbon steel sized not to
exceed a speed of 8.5 FPS based on full flow.
c)
Threaded-type fittings welded into the piping shall be rated at
more than 150 PSIG working pressure.
d)
Manifold connections shall be flanged.
All mechanical equipment shall be guaranteed for twelve (12) months
from date of delivery, against any defects in workmanship or
materials.
11)
IRRIGATION COMPONENTS AND/OR SYSTEMS
SECTION 32 84 23
PAGE 2