HG-CF-1101 Rev. C – 19.05.06
Page 6
Caution -
Operating temperature limitations are as follows:
Operating Temperatures
Materials
Maximum
Minimum
Optimum
Buna-n
-
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.
176
o
F
80
o
C
-18
o
F
-28
o
C
50
o
to 140
o
F
10
o
to 60
o
C
EPDM -
Shows very good water and chemical resistance. Has poor resistance to oils and solvents, but is fair on
ketones and alcohols.
212
o
F
100
o
C
-11
o
F
-24
o
C
50
o
to 212
o
F
10
o
to 100
o
C
Neoprene -
All purpose. Resistant to vegetable oil. Generally not affected by moderate chemicals, fats greases
and many oils and solvents. Generally attacked by strong oxidising acids, ketones, esters, nitro hydro carbons and
chlorinated aromatic hydrocarbons.
212
o
F
100
o
C
-4
o
F
-20
o
C
50
o
to 130
o
F
10
o
to 54
o
C
Santoprene® -
Injection moulded thermoplastic elastomer with no fabric layer. Long mechanical flex life.
Excellent abrasion resistance.
212
o
F
100
o
C
-10
o
F
-23
o
C
50
o
to 212
o
F
10
o
to 100
o
C
PTFE -
Chemically inert, virtually impervious. Very few chemicals are known to react chemically with PTFE : mol-
ten alkali metals, turbulent liquid or gaseous fluorine and a few fluoro-chemicals such as chlorine trifluoride or oxygen
difluoride which readily liberate free fluorine at elevated temperatures.
212
o
F
100
o
C
32
o
F
0
o
C
50
o
to 212
o
F
10
o
to 100
o
C
Viton® -
Shows good resistance to a wide range of oils and solvents : especially all alphatic, aromatic and
halogenated hydrocarbons, acids, animal and vegetable oils.
212
o
F
100
o
C
0
o
F
-18
o
C
75
o
to 212
o
F
24
o
to 100
o
C
Polypropylene -
High strength, light weight, corrosion resistant polyolefin which easily withstands most chemi-
cals, with no known solvent at room temperature.
158
o
F
70
o
C
-40
o
F
-40
o
C
50
o
to 140
o
F
10
o
to 60
o
C
Temperature Guide & Pump Code Matrix
VALVE SEATS
T : PTFE
VALVE BALLS
T : PTFE
DIAPHRAGMS
T : PTFE
X : PTFE/VITON (HIGH TEMP.)
(SEE PAGE 10 FOR DETAILS ON SPECIFY-
ING
HIGH TEMPERATURE APPLICATIONS)
SUFFIX - (WHERE APPLICA-
BLE)
LF : LUBE FREE
F : FLANGED - ANSI 150
H : HYDROSTATIC TEST
(A THREE DIGIT NUMBER SUFFIX
DENOTES A SPECIAL DESIGN
i.e. 301 = OPPOSED SUCTION)
PREFIX
B : BLAGDON UK
N : BLAGDON USA
V : VERSA-MATIC
X : ATEX CERTIFIED
WETTED COMPONENTS
T : PTFE
4: CONDUCTIVE PTFE
NON - WETTED COMPONENTS
4 : CONDUCTIVE PTFE
5 : POLYETHYLENE (HDPE)
VALVE TYPE
B : BALL
SUCTION ORIENTATION
B : BOTTOM
DESIGN LEVEL
MODEL NO.
25 : SERIES 00
TYPICAL CODE =
B 25. 00. T 5. B B. T T T - LF