OPERATION AND MAINTENANCE MANUAL 05/2015
4
2.2 MATERIALS
The table below lists the structural materials of the check flap valves.
Item Part designation Material
Reference standard
1
Body
Steel grade 1.0037
Steel grade 1.4310
PN-EN 10025-2:2007
PN-EN 10088-1:2014
2
Cover
Steel grade 1.0037
Steel grade 1.4310
PN-EN 10025-2:2007
PN-EN 10088-1:2014
3
Spring*
50S2JR/Zn
Steel grade 1.4310
PN-74/H-84032
PN-EN 10088-1:2014
4
Seal
Rubber: EPDM
PN-ISO 1629: 2005
5
Eye bolt
Steel grade 1.0037
Steel grade 1.4310
PN-EN 10025-2:2007
PN-EN 10088-1:2014
*not in standard version
2.3 DIMENSIONS
[kg]
40
94
21
15
0,5
50
109
30
15
0,8
65
129
41
15
1,3
80
144
50
17
1,5
100
164
75
17
2,3
125
195
96
18
3,0
150
221
96
18
4,5
200
276
155
28,5
9,3
250
330
200
33,5
15,0
300
384
240
38
24,0
[mm]
D
E
L
Weight
DN
