Datasheet ERHARD ERK tilting-disc check valve

Transcription

ERHARD is a company of
Datasheet
ERHARD ERK tilting-disc check valve
ERHARD ERK tilting-disc
check valve
The universal check valve
with double excentric valve disc
A key component of the ERHARD ERK tilting-disc check valve is the valve disc
which has a freely oscillating, flow-facilitating design with double eccentricity support. The shafts are in maintenance-free, self-lubricating friction bearings, and the shaft has maintenance-free seals. A rolled up, solid body seat ring
made of stainless steel, and a disc seat ring which is additionally provided with
an elastic fine seal, provide perfect sealing
The ERHARD ERK check valve is designed for medium water, from DN600 also
suitable for sewage and it´s designed in a short face-to-face length. With nominal diameters ranging from DN 150 to DN 1000 and pressure ratings ranging
from PN 10 to PN 25, as well as numerous options, the ERHARD ERK tilting-disc
check valve provides a solution that can be individually adapted, even for special
applications. For accident prevention in the swing area of the lever a protective
cage is available. For an legal backflow, for delayed smooth closing or opening
and to avoid pressure shock a damping device, weight-loaded hydraulic actuator, is available. To improve the economics of the plant, a pneumatic fill opening
device is available, too.
Operating instructions
BA55E000_ERHARD_ERK_
tilting_disc_150-600
ERHARD_ERK_tilting_disc_
SOE_150-600
2
Short body EN 558-1,
basic line 14
Shipment
Nominal sizes
DN 150 - DN 1400
Pressure ratings
PN 10 - PN 40
Working temperatures
- 20 °C to + 60 °C for water
Anschlüsse
- with flanges to EN
- with flanges to international standards
Materials
Body and valve disc
- Cast iron with spheroidal graphite GGG
- Cast iron with lamellar graphit GG
Seals
Elastomer Perbunan, EPDM oder Viton
Protection against corrosion
- EKB fusion bonded epoxy
- Coating according to customers’ request
3
Tilting-disc check valve –
single components
16
17
6
10
14
12
9
11
15
3
13
4
8
5
7
2
1
Standard design with weight-loaded lever
Pos.
1)
Description
Materials
Coating
1
Body
ductile cast iron
EKB
2
Seat ring
3
Valve disc
4
Disc facing ring
stainless steel
5
O-ring
elastomer (NBR)
6
Spacer
stainless steel
7
O-ring
stainless steel
8
O-ring
elastomer (NBR)
9
Shaft
stainless steel
10
Key
stainless steel
11
Locking plate
stainless steel
12
Hexagon bolt
stainless steel
13
Flanged bearing
ductile cast iron
14
Bush
steel-sn-PTFE
15
Fitting ring
brass
16
Washer
stainless steel
17
Hexagon bolt
stainless steel
18
Lever
steel
stainless steel
1)
ductile cast iron
EKB
EKB
EKB
DN 150: austenitic CrNi steel
4
Protective guard to be mounted by user
For DN 700 and larger, the valve disc protrudes – during its travel – from the body on the inlet side.
Nominal
size
DN
150
200
250
300
350
400
450
500
600
700
800
900
1000
1100
1200
1400
Facetoface
dim.
in mm
210
230
250
270
290
310
330
350
390
430
470
510
550
590
630
710
Space requirement in mm
Flange-Ø
D
PN10
340
400
455
505
565
615
670
780
895
1015
1115
1230
1340
1455
1675
PN16
285
340
400
455
520
580
640
715
840
910
1025
1125
1255
1355
1485
1685
Feet dimensions in mm
e1
e2
e3
e4
e5
e6
h1
h2
b
230
270
300
350
375
400
450
480
560
640
690
750
820
895
975
1070
210
245
280
325
350
375
410
445
515
600
655
725
780
860
935
1070
230
250
250
300
350
400
450
500
600
700
800
900
1000
1000
1000
1000
–
20
45
70
95
118
142
165
215
263
315
364
410
455
515
615
–
–
–
–
–
–
–
–
–
10
15
30
40
55
62
80
–
–
–
–
–
–
–
–
5
20
30
45
35
80
210
240
250
300
350
390
450
500
600
680
800
890
990
1030
990
1070
150
155
145
180
200
230
260
290
350
400
460
510
570
570
490
480
150
160
180
200
225
250
250
300
330
400
450
550
60
650
700
800
h3
PN10
175
205
230
260
290
315
340
395
455
515
562
630
680
730
845
h3
PN16
145
175
205
230
270
295
325
360
425
460
520
570
635
690
750
850
Weight
approx. kg
PN10
55
80
105
140
170
210
270
380
520
720
950
1200
1380
1880
2970
PN16
45
65
90
115
160
195
240
330
430
570
765
1020
1290
1500
2020
3120
Volume
m3
0,03
0,05
0,08
0,12
0,18
0,23
0,32
0,41
0,71
0,99
1,42
1,95
2,58
2,88
3,43
4,55
5
Suggestion for installation of
check valve and butterfly valve
Attention! Installation must be effected in such a way that the weight-loaded
lever of the check valve is on the left seen in flow direction and that the gearbox
of the butterfly valve is on the right, seen in flow direction. Thus, there will be no
collision between weight-loaded lever and gearbox.
Required back pressure to absolute tightness: 0,3 - 0,4 bar
e5
e4
Check valve
Intermediate pipe
Butterfly valve
Nominal size
DN
L
mm
L1
mm
e4
mm
e5
mm
c
mm
150
200
250
300
350
400
450
500
600
700
800
900
1000
1100
1200
1400
210
230
250
270
290
310
330
350
390
430
470
510
550
590
630
710
–
150
150
150
200
225
250
300
400
500
600
650
750
800
900
1100
–
20
45
70
95
118
142
165
215
263
315
364
410
455
515
615
–
–
–
–
–
–
–
–
–
10
15
30
40
55
62
80
–
–
–
2
25
40
55
65
95
120
150
180
210
225
270
320
6
Functional and control diagram
of a hydraulic damping device
ERHARD hydraulic damping devices are double-acting, i.e., damping is effective in opening direction and in closing direction. Appropriate kinematics and
shape of the damping cylinder brings about the damping zones shown in the
below diagram. The hydraulic damping device is of very compact design and
well approved in terms of ease of maintenance, adjustability, and functionality
thanks to its being installed externally.
If the standard types are equipped with hydraulic damping cylinder, due to shaft
dimensioning and material, the admissible back pressure is limited as follows:
DN
150
200
250
300
350
400
450
500
600
700
800
900
1000
Max. admiss. back press. in bar
12,5
14,5
7,1
8,5
5,4
3,6
4,5
3,3
3,2
3,1
2,9
2,9
2,9
Types for higher back pressure upon request.
7
Lever arrangement
For horizontal pipes
Flow direction
Fig. 1
Fig. 2
Fig. 3
Counterweight with damping device
on the left, seen in flow direction
on the right, seen in flow direction
on both sides
Fig. 4
Fig. 5
Fig. 6
Counterweight with damping
device on both sides
Fig. 7
Fig. 8
Fig. 9
Counterweight with damping
device on both sides
For vertical pipes, upward flow
For vertical pipes, downward flow
When placing the order, please specify the fig. No. of the lever arrangement.
8
Zeta-values
DN 200 PN 16 / 25
7
600
6
800
8
80
70
700
7
70
600
6
60
60
Dr
50
4
40
3
j
30
z
200
2
20
100
1
0
0
0
1
2
3
Flow rate v [m/s]
4
5
500
400
300
10
100
1
0
0
0
600
2
3
Flow rate v [m/s]
4
5
0
8
80
7
70
700
7
70
6
60
600
6
60
5
50
Dr
4
40
3
30
2
1
0
0
z
0
1
2
3
Flow rate v [m/s]
4
5
500
400
300
5
50
Dr
4
40
3
200
2
10
100
1
0
0
0
20
j
30
j
z
20
10
0
1
2
3
Flow rate v [m/s]
4
5
0
DN 400 PN 10 / 16
900
9
90
800
8
80
800
8
80
700
600
7
70
700
7
70
6
60
600
6
60
Dr
5
50
4
40
3
200
2
100
1
0
0
30
j
0
z
1
2
3
4
5
400
300
5
3
2
10
100
1
0
0
0
50
Dr
4
200
20
Flow rate v [m/s]
500
Zeta-Value z [-]
90
Pressure loss Dr [mmWS]
9
Degree of opening j [% (100 % = open)]
900
Zeta-Value z [-]
1
800
DN 350 PN 10 / 16
0
80
100
300
10
90
Zeta-Value z [-]
700
400
20
z
9
8
500
30
j
900
800
Zeta-Value z [-]
90
200
40
DN 300 PN 10 / 16
9
300
3
2
DN 250 PN 10 / 16
400
50
Dr
4
200
900
500
5
300
80
400
90
8
700
5
9
Zeta-Value z [-]
800
500
900
90
9
Zeta-Value z [-]
DN 150 PN 16 / 25
900
40
30
j
z
20
10
0
1
2
3
Flow rate v [m/s]
4
5
0
9
Zeta-values
DN 600 PN 10
7
600
6
60
Dr
100
1
0
0
80
7
70
600
6
40
3
2
8
700
50
4
200
800
70
30
j
0
z
1
2
3
4
5
400
300
100
1
0
0
0
7
600
6
4
5
0
70
700
7
70
600
6
60
Dr
5
50
4
40
j
30
z
100
1
0
0
2
3
Flow rate v [m/s]
4
5
500
400
300
60
Dr
5
50
4
40
3
j
30
z
200
2
20
10
100
1
10
0
0
0
0
1
2
3
Flow rate v [m/s]
4
5
0
DN 1000 PN 10 / 16
900
9
90
800
8
80
800
8
80
700
600
7
70
700
7
70
6
60
600
6
60
Dr
5
50
4
40
3
j
30
z
200
2
20
100
1
0
0
0
1
2
3
Flow rate v [m/s]
4
5
500
400
300
Zeta-Value z [-]
90
9
900
Zeta-Value z [-]
3
80
DN 900 PN 10 / 16
2
Flow rate v [m/s]
8
20
300
1
800
2
400
0
80
200
500
10
90
Zeta-Value z [-]
700
1
20
9
8
0
z
900
800
Zeta-Value z [-]
90
3
30
j
DN 800 PN 10 / 16
9
300
40
3
10
DN 700 PN 10 / 16
400
50
4
2
900
500
5
200
20
Flow rate v [m/s]
500
60
Dr
300
80
400
90
8
700
5
9
Zeta-Value z [-]
800
500
900
90
9
Zeta-Value z [-]
DN 500 PN 10 / 16
900
Dr
5
50
4
40
3
j
30
z
200
2
20
10
100
1
10
0
0
0
0
1
2
3
Flow rate v [m/s]
4
5
0
10
Zeta-values
90
800
8
80
700
7
70
600
6
500
400
300
9
Zeta-Value z [-]
DN 1200 PN 10 / 16
900
60
Dr
5
50
4
40
3
j
30
z
200
2
20
100
1
10
0
0
0
1
2
3
Flow rate v [m/s]
4
5
0
11
Your Choice in Waterflow Control
TALIS is the undisputed Number One for water transport and water
flow control. TALIS has the best solutions available in the fields of
water and energy management as well as for industrial and communal applications. We have numerous products for comprehensive
solutions for the whole water cycle – from hydrants, butterfly valves
and knife gate valves through to needle valves. Our experience,
innovative technology, global expertise and individual consultation
processes form the basis for developing long-term solutions for the
ERHARD GmbH & Co. KG
efficient treatment of the vitally important resource “water”.
Postfach 1280
D-89502 Heidenheim
Meeboldstrasse 22
D-89522 Heidenheim
Phone:
+49 7321 320-0
Fax:
+49 7321 320-491
E-Mail:
[email protected]
Internet: www.erhard.de
Note: Specifications may be changed without notification at any time.
Copyright: No copying without express written permission of ERHARD
ERHARD is a Registered Trademark. 46254 EN (02/13)

Datasheet ERHARD ERK tilting-disc check valve

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