hdf3mdl2sm-rev0316
Model HDF3-M & HDF4-M Page 2
Meanings of
Abbreviations:
A = Compressed Fibre
H = Hytrel
®
SS = Stainless Steel
B = Nitrile
N = Neoprene
U = Urethane
CI = Cast Iron
PS = Plated Steel
S = Santoprene
DI = Ductile Iron
Most types available in dual port design. See price book or consult factory for details.
Hytrel is a registered tradename of E.I. du Pont. Santoprene is a registered tradename of Exxon Mobil Corp.
Explanation of Pump Nomenclature, HDF3-M & HDF4-M
II 2GD T5
II 1 G c T5
II 1 D c T100°C
I M1 c
I M2 c
Models equipped with Cast Iron wetted parts, and Cast
Iron midsection parts.
MATERIALS OF CONSTRUCTION
HDF3-M
Type
Manifold
Elbow
Outer
Chamber
Inner
Chamber
Outer
Diaphragm
Plates
Inner
Diaphragm
Plate
Intermedi
-
ate Housing
Diaphragm
Rod
Valve
Seat
Hardware
Diaphragm
Flap
Valve
Material
Seat
Gasket
Sealing
Rings
Shippping
Wt. (lbs)
DA2II
CI
CI
DI
CI
PS
CI
416SS
SS
PS
N
U
A
B
245
DN2II
CI
CI
DI
CI
PS
CI
416SS
SS
PS
N
N
A
B
363
DB2II
CI
CI
DI
CI
PS
CI
416SS
SS
PS
B
B
A
B
363
DK2II
CI
CI
DI
CI
PS
CI
416SS
SS
PS
N
H
A
B
363
DS2II
S
S
HDF4-M
Type 2
DN2II
CI
CI
DI
CI
PS
CI
416SS
SS
PS
N
N
A
B
390
DB2II
CI
CI
DI
CI
PS
CI
416SS
SS
PS
B
B
A
B
390
DA2II
CI
CI
DI
CI
PS
CI
416SS
SS
PS
N
U
A
B
390
DS2II
S
S
To order a pump or replacement parts, first enter the Model Number HDF3-M, or HDF4-M, followed by the Type Designation listed below in the far left column.
Materials
Operating Temperatures
For specific applications, always consult “Chemical Resistance Chart" Technical Bulletin
Nitrile
General purpose, oil-resistant. Shows good solvent, oil, water and hydraulic fluid resistance. Should
not be used with highly polar solvents like acetone and MEK, ozone, chlorinated hydrocarbons and nitro
hydrocarbons.
NEOPRENE
All purpose. Resistant to vegetable oils. Generally not affected by moderate chemicals, fats,
greases and many oils and solvents. Generally attacked by strong oxidizing acids, ketones, esters, nitro
hydrocarbons and chlorinated aromatic hydrocarbons.
HYTREL
®
Good on acids, bases, amines and glycols at room temperature.
Urethane
Shows good resistance to abrasives. Has poor resistance to most solvents and oils.
Maximum
Minimum
‡
Santoprene
®
Injection molded thermoplastic elastomer with no fabric layer. Long mechanical flex life.
Excellent abrasion resistance.
190°F -10°F
88°C -23°C
200°F -10°F
93°C -23°C
220°F -20°F
104°C -29°C
150°F +32°F
66°C
0°C
275
°
F
-40
°
F
135
°
C
-40
°
C
Maximum and Minimum Temperatures are the limits for which
these materials can be operated. Temperatures coupled with
pressure affect the longevity of diaphragm pump components.
Maximum life should not be expected at the extreme limits of
the temperature ranges.
CF-8M Stainless Steel
equal to or exceeding ASTM specification A743 for corrosion resistant iron
chromium, iron chromium nickel, and nickel based alloy castings for general applications. Commonly
referred to as 316 Stainless Steel in the pump industry.