42
DEPA
®
Air Operated Diaphragm Pumps
DL 40 - PP - E E E
9.0 Materials and pump coding
*
Polypropylene solid
**
Polytetrafluoroethylene
***
not for DL 15
****
PP-injection molding, only size 15/25/40
Max. pressure range
All types as specified
DB pumps to 21 bar
-
DB pumps to 16 bar
B
DB pumps to 13 bar
A
Series
Standard series made of
cast metal, plastic and
stainless steel, polished
Cast metal,
non metallic
(
flanged design)
Drum pump
Double pump
Powder pump
High pressure pump
Special pump without
own control valve
DL
DH
DF
DZ
DP
DB
DJ/
DH..J
Pump size
Connections G1/2"
DN 15 15
Connections G1"
DN 25 25
Connections G1 1/2" DN 40 40
Connections G2"
DN 50 50
Connections G3"
DN 80 80
Interior equipment
Diaphragm Seats Balls
NRS
B
B B***
NBR
N
N
N***
EPDM
E
E
E***
EPDM (grey)
G
G
G***
FKM (Viton
®
)
F F -
PTFE (Teflon
®
)**
T T T
EPDM grey for
U
-
-
series DH (polished
stainless steel pumps)
PTFE ** for
P
-
-
series DH (polished
stainless steel pumps)
nopped E4
®
PTFE
compound
Z - -
Stainless steel
-
R
R
Stainless steel DB
-
H
R***
NBR, steel core***
-
-
Y***
EPDM, steel core***
-
-
W***
EPDM, grau
-
-
X***
with steel core***
PTFE**, steel core***
-
-
Z***
NRS, steel core***
-
-
V***
Hytrel
®
H - -
DEPA
®
nopped S
4
S - -
noppedE4
®
NRS
5
-
-
noppedE4
®
NBR
1
-
-
noppedE4
®
EPDM
2
-
-
noppedE4
®
EPDM (gray) 3
- -
noppedE4
®
FKM (Viton
®
) 4
- -
Material assembly groups
Housing
Diaphragm plate Centre block
Cast aluminium
High-grade steel
Cast aluminium
FA
Nodular cast iron***
Steel
Cast aluminium
CA
Nodular cast iron***
Steel
Cast bronze***
CX
Cast high-grade steel
stainless steel
Cast aluminium
SA
Cast high-grade steel*** Stainless steel
Cast aluminium
SF
Cast high-grade steel*** Stainless steel
Cast bronze
SX
Cast high-grade steel
Stainless steel
Stainless steel
SS
High grade steel
Polished stainless Cast aluminium
polished 1.4301
steel 1.4301
nickel-plated
SL
(AISI/BS 304)
(AISI/BS 304)
High grade steel
Polished stainless Cast
polished
steel
aluminium
UL/
AISI/BS 316L
AISI/BS 316L
nickel -plated
SU/
(1.4404)
(1.4404)
UE
PP*
PP* PP* PP
PP injection moulded**** PP*
PP*
PM
PP* electr. conductive
PP* electr.
PP* electr.
PL
conductive conductive
PTFE**
PTFE** PP* PT
PTFE** electr.
PTFE** electr.
PP* electr.
TL
conductive
conductive conductive