WATSON MARLOW
No aeration
A plant that produces fine quality bone china was
using a two-stroke reciprocating type piston pump
to transfer slip from the slip house to the casting
shop. Due to entrained air in the slip, pinholes were
forming in the surface of the cast body, which was
impairing the quality of the finished product. The slip
is thixotropic and highly abrasive. Changing over to a
peristaltic pump eliminated this problem. Its glandless
construction prevented the ingress of air.
Dimensions
Note: measurements in inches
How to use the curves
1. Flow required indicates pump speed
2. Calculated discharge pressure
3. Net motor power required
4. Product temperature
5. Calculated discharge pressure
6. Maximum recommended pump speed
Note: The area of continuous operation
diminishes with increased product
temperatures. For product temperatures
>104F, the area of continuous operation
reduces to the corresponding red
temperature line.
Type
A
B
C
D
E
F
G
H
H1
J
K
L
max
L1
L2
max
M
N
O
P
Q
R
Bredel 40
27.76
16.22
0.10
16.93
4.33
19.29
21.26
25.31
12.79
2.87
3.31
28.0
3.58
9.21
11.81
4.72
1.18
Ø0.71
Ø0.71
4.33
Bredel 50
33.0
18.7
0.12
21.81
5.63
24.41
27.77
31.93
16.53
3.27
3.74
33.07
4.41
12.28
14.96
6.10
1.57
Ø0.71
Ø0.71
4.92
9