Compatibility Between Processed Liquid And Pump Materials - VARISCO J-ATEX JP Serie Traducción Del Manual Original

EN - SaFEtY InStRuCtIonS aCCoRDInG to DIRECtIVE 94/9/EC - J-ATEX

10. COMPATIBILITY BETWEEN PROCESSED LIQUID AND PUMP MATERIALS

The user must always pump liquids that are compatible with the constructive materials of the pump. In this regard, check che-
mical compatibility between the process fluid and the materials of the pump. They can be easily obtained in technical literature
of the tables supplying the compatibility degree between the two materials: from "not recommended" (meaning alteration of the
features of one of the two materials) to "excellent" (meaning there are no significant alterations of the features of one of the two
materials). To know the pump materials simultaneously use Fig. 5, 6, and 7 and Tab. 3, 4, 5 and 6. From Fig. 5, 6 and 7, compa-
ring them with the label on the pump, determine the representative initials of the metallurgy of the pump and of the seal materials.
From Tab. 3, with the previously determined initials, determine the initials of the materials of the various components used in a
certain constructive execution. Finally, from Tables 4, 5 and 6 obtain the meaning of each, previously identified, initial.
ATTENTION The use of the pump with fluids not compatible with the components materials of the same, or in
ambients with presence of non compatible fluids is, in any case, forbidden.
Table 3 - Materials of the pump components depending on execution
Execution Pump body
G1 G
F1 G
P1 G
Q1 G
t1 G+QPQ
S1* G
R1* G+QPQ
B1 B
K1 K
l1 Kl
a1 a
G2 G
F2 G
K2 K
L2 KL
P3 G
F4 G
K4 K
l4 Kl
F5 G
K5 K
l5 Kl
* The tooth initiation (launching) is made of steel and the wear plate is partially coated in NBR
Table 4 - Pump materials key
Pump material initial
G
G+QPQ
A
B
K
KL
S
** The nitrocarburising treatment TENIFER-QPQ® is carried out on body, motor carrier, rotor and wear plate.
Table 5 - Seal materials key (sliding parts)
Seal material initial
Y
W
G
S
Impeller Wear plate
G G
K K
G G
B B
G+QPQ G+QPQ
S G
S G+QPQ
B B
K K
Kl Kl
a a
G G
K K
K K
KL KL
G G
K K
K K
Kl Kl
K K
K K
Kl Kl
Description
Cast iron (EN GJL-200 / EN GJS-400 / EN GJS-500 )
Cast iron with nitrocarburising treatment TENIFER-QPQ® (Quench-Polishing-Quench) **
Aluminium AlSi4,5MnMg - UNI 3054 (Anticorodal)
Bronze UNI 85.5.5.5 (B10)
Stainless steel AISI 316 (CF8M for the fusion components)
Stainless steel AISI 316L (CF3M for the fusion components)
Hardened steel C40 (shaft) Steel ASTM A 216 WCB (S and R executions rotor)
Description
Syntherised silicon carbide (SiC)
Syntherised tungsten carbide (WC)
Synthetic graphite
Steatite (silica ceramic)
Shaft
Type
S 1
K 1
S 1
K 1
S 1
S 1
S 1
K 1
K 1
Kl 1
S 1
S 2
K 2
K 2
KL 2
S 3
K 4
K 4
Kl 4
K 5
K 5
Kl 5
Seal
Rotary part Fixed part
Yn Yn
YV YV
YV YV
YV YV
Yn Yn
Yn Yn
Yn Yn
Yn Yn
YV YV
YV YV
Yn Yn
WT WT
WT WT
WT WT
WT WT
GV YV
YV YV
YV YV
YV YV
YV YV
YV YV
YV YV
17