Page 92 - publication

valves and accessories
www.anvilintl.com 92
The Fig. 7250 Gruvlok Suction Diffuser protects your pump
and saves you money on your overall installed cost while
offering you these advantages:
SAVES SPACE:
Mounts directly to the pump inlet.
SAVES LABOR AND MATERIAL:
The lightweight compact design is easily installed with
no need for welding.
IMPROVES PUMP PERFORMANCE:
The one-piece diffuser vane and strainer design reduces fow turbulence,
streamlines the fow, and traps any hazardous foreign material to better
protect your pump.
PIPE SUPPORT LUG STANDARD
FIG. 7250
Suction Diffuser
material specifications
ANSI BOLTS & HEAVY HEX NUTS:
Heat treated, oval neck track head bolts conforming to ASTM A 183
Grade 2 with a minimum tensile strength of 110,000 psi and heavy hex
nuts of carbon steel conforming to ASTM A 563. Bolts and nuts are
provided zinc electroplated as standard.
METRIC BOLTS & HEAVY HEX NUTS:
Heat treated, zinc electroplated oval-neck track head bolts made of
carbon steel with mechanical properties per ISO 898-1 Class 8.8. Hex
nuts and bolts are zinc electroplated followed by a yellow chromate dip.
STAINLESS STEEL BOLTS & NUTS:
Stainless steel bolts and nuts are also available. Contact a Gruvlok
Representative for more information
HOUSING:
Sizes 21/2" x 2 1/2" through 10" x 8":
Carbon steel Schedule 40 conforming to ASTM A 53, Grade B.
Sizes 10" x 10" through 16" x 14":
Carbon steel .375" standard weight wall conforming to ASTMA 53, Grade B.
DIFFUSER BASKET:
Stainless steel type 304, #16 perforated plate with 3/16” diameter holes.
(51% open area). Pre-Filter: Stainless steel type 304 screen - 16 mesh.
(removable).
COUPLINGS:
Ductile Iron conforming to ASTM A 536, Grade 65-45-12.
FLANGES:
Carbon steel class 150# conforming to ASME B 16.5.
DRAIN & GAGE PLUGS:
Carbon steel square head plugs conforming to ASME B16.11.
COATINGS:
Rust inhibiting paint Color: ORANGE (standard)
Hot Dipped Zinc Galvanized (optional)
Other Colors Available (IE: RAL3000 and RAL9000)
For other Coating requirements contact a Gruvlok Representative.
GASKETS: Materials
Properties as designated in accordance with ASTM D 2000
Grade “E” EPDM (Green color code) NSF 61 Certifed -40°F to 230°F
(Service Temperature Range)(-40°C to 110°C)
Recommended for water service, diluted acids, alkalies solutions, oil-
free air and many chemical services.
NOT FOR USE IN PETROLEUM APPLICATIONS.
Grade “T” Nitrile (Orange color code) -20°F to 180°F
(Service Temperature Range)(-29°C to 82°C)
Recommended for petrolium applications. air with oil vapors and
vegetable and mineral oils.
NOT FOR USE IN HOT WATER OR HOT AIR.
FLOW THROUGH SUCTION-DIFFUSER GPM
FLOW CHARACTERISTICS
ISP NI PORD ERUSSERP
TF NI SSOL DAEH
FO .
AW RET
100 60 200 400 600 1000 2000 4000
0.2
0.4
0.6
0.8
1.0
2.0
0.46
0.69
0.92
1.38
1.85
4.62
2.31
"
2
/
11 x "
2
/
1
2
&"
2
/
1
2
x
"3
"
3x "
4
&
"
3
x
"3
"
4
x
"
4
"
4
x"6
&
"
4
x
"
5
"
5x
"
6
&"
5
x
"
5
"
6
x
"
8
&"
8x
"
6
"
8x
"
0
1
&
"
8x "
8
"
0
1
x"
2
1
&
"
0
1 x "
0
1
"
2
1x
"
2
1
&"
2
1x
"41
"
4
1x
"
6
1
FLOW DATA:
NOTE 1. Most U.S. piping engineers specify
system startup instructions for new systems
which include removing the pre-flter screen
after system fushing of the main piping before
the system is put into normal operation.
Flow data values are based on fow of clean
water at ambient temperatures. The pressure
drop across the diffuser basket strainer, 50%
clogged, is approximately twice as great as
that of a clean strainer.
NOTE 2. Suction Diffuser baskets need a routine
maintanence program to maintain system
effciency.
GL-2.10