Butterfly Flange
This data sheet and the corresponding scale drawings are to be used as a general guideline and technical overview of our products. Please contact us if more exact information is needed. As we are constantly improving our
products, their characteristics, dimensions and weights may also change, although we do our best to incorporate these changes continually. asa assumes no liability for any information therein, any errors, omissions, misprints, nor
any direct or indirect damages, losses or costs resulting therefrom. Any cooling performances and general technical values indicated in this catalogue are measured at a test bench according to asa testing procedures or calculated,
based on such tests. Due to different conditions in testing and application environments the performance may also vary by +/- 15%. Because there is no standardized testing procedure, tests used by other manufacturers could have
different results. Therefore we recommend all products to be checked under the system operating conditions. This is also true for vibrations and mechanical stress as well as for pressure peaks and thermal stress and any other
relevant factors. General tolerances according to DIN ISO 2768-vL, General tolerances for casted parts according EN ISO 8062-3 (DCTG 10). Tolerances for rubber parts are according to ISO 3302-1 (class M4-F+C).. The tolerances
of welding seams are defined by quality group D according to EN ISO 10042, if it is not specified on the actual scale drawing or data sheet. In addition to that we point out that any data sheet and corresponding scale drawing is no
substitution for the manual.
DD-butterfly-flange-en-rev2 © asa technology, February 2021 page1/1
The
asa
butterfly flange with SAE and DIN connections allows the combination with an elastic element (rubber compensator) to make a short
compensating and economical connection with the pump port. The lever position can be changed through our new mechanism. The handle
direction (clockwise or counter clockwise) can be changed by turning the switch bracket. Please note that the butterfly flange may only be
opened in mounted state and with greased or lubricated sealing. The adapter flange may only be welded with demounted butterfly flange.
Technical Data
order
number
description
size
A
B
C
D
E
F
G
Ø H
M
Ø N
NW
TK
weight
SAE
DIN
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
[kg]
SDA0040
AF 40
40
70
35,7
102
120
162
25
43
60
M12
13,5
40
110
2,17
SDA0050
AF 50
50
77,8
42,9
111
112
155
20
43
73
M12
13,5
48
125
2,2
SDA0063
AF 63
65
89
50,8
111
119
161
20
40
83
M12
13,5
63
125
2,15
SDA0080
AF 80
80
106,4
62
144
145
187
20
41
95
M16
18
80
160
2,98
SDA0100
AF 100
100
130,2
77,8
163
162
205
20
43
123
M16
18
100
180
4,01
SDA0125
AF 125
125
152,4
92
185
185
227
20
43
148
M16
18
125
210
4,8
Working Ranges
max. over pressure (open valve)
16 bar
max. differential pressure
(closed valve)
6 bar
temperature range
-20°C to +80°C
Materials
housing
cast iron
lever
steel
valve disc
aluminium
seals
NBR
Options
limit switch
mechanical or inductive type
FPM sealings
contact us for the Viton valve
range
stainless steel
contact us for the stainless steel
range
aluminum version
request
possible valve positions and
actuating directions
*)
*)
available inductive limit switch. Please contact us
to discover all functions and options.