ERHARD-Armaturen ERU K1 User manual

BA46E033
Operating Instructions
ERHARD ERU Knife Gate Valve K1
DN 50 - 300
Electric Actuator
1 Safety
2 Description of Product and Range of Application
3 Design Features – Technical Data
4 Performance and Mode of Operation
5 Storage
6 Installation into the Pipeline - Mounting
7 Initial Operation
8 Operation
9 Maintenance
These operating instructions must always be used in combination with operating
instructions BA01E001!
1 Safety
Access to the range of movement of the gate of ERU Knife Gate Valves with electric
actuator has to be restricted by protective devices. Effective protective devices have to
be installed by the user.
On request, we will supply suitable protective guards.
2 Description of Product and Range of Application
Type/Design Product Number
ERU Knife Gate Valve K1 4657 PN 10
ERU Knife Gate Valve K1 with regulating orifice 4623 PN 10
Design with electric actuator
BA46E033
July 2005
Rev. 4
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 [phone] e-mail:[e-mail]
Internet: http://www.erhard.de
Page 1 of 13

Operating Instructions for ERU Knife Gate Valve K1 with electric actuator
Product No. Nominal
diameter
DN
Nominal
pressure
PN
Hydr. test pressure in bars
for
Body Seat
Max. admissible
working pressure in
bars at a working
temperature of
max. 70° C
4655, 4656
4657, 4623
50 - 300
50 – 300
10
10
15
15
10
10
10
10
If EPDM profile seals are used for the ERU Knife Gate Valves K1, the parts of EPDM
must not get in contact with oil or grease, as the EPDM would swell.
For a recommended lubricant see section "Maintenance".
ERU Knife Gate Valves K1 of this design are suitable for "ON-OFF" operation.
For explicit regulating service, special designs have to be used, e.g. design with
regulating orifice.
BA46E033
July 2005
Rev. 4
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 [phone] e-mail:[e-mail]
Internet: http://www.erhard.de
Page 2 of 13

Operating Instructions for ERU Knife Gate Valve K1 with electric actuator
3 Design Features – Technical Data
Drawing 2E 39861
ERU Knife Gate Valve K1 with electric actuator
BA46E033
July 2005
Rev. 4
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 [phone] e-mail:[e-mail]
Internet: http://www.erhard.de
Page 3 of 13

Operating Instructions for ERU Knife Gate Valve K1 with electric actuator
Dimensioned table (for drawing No. 2E 39861)
1) PREFERRED SERIES FOR MODULATING ACTUATORS
²) PREFERRED SERIES FOR STANDARD ACTUATORS
3) EN558-1, BASIC SERIES 20
FORMER DIN 3202, PART 3, SERIES K1
BA46E033
July 2005
Rev. 4
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 [phone] e-mail:[e-mail]
Internet: http://www.erhard.de
Page 4 of 13

Operating Instructions for ERU Knife Gate Valve K1 with electric actuator
Parts lists and sets of spare parts (for drawing 2E 39861)
1. Replace profile seal Set1 every 2 years
2. Replace U-shaped sealing element Set2 every 5 years
3. Replace stem Set3 if necessary
4. Replace stem nut Set4 if necessary
Item Description Set1 Set2 Set3 Set4
1 Body component
2 Sealing element X
3 Hexagon bolt
4 Washer
5 Hexagon nut
6Gate
7 Profile seal X X
8 Guide tape X X
9 Compressor
10 Taper plug
11 Cover plate
12 Washer
13 Hexagon bolt
14 Bush
15 Fork nut X X
16 Bolt
17 Washer
18 Cotter pin
19 Stem X
20 Straight grooved pin
21 Stud bolt
22 Gudgeon
23 Bearing support
24 Washer
25 Hexagon nut
26 Electric multi-turn actuator
27 Washer
28 Cylindrical screw
29 Taper plug
BA46E033
July 2005
Rev. 4
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 [phone] e-mail:[e-mail]
Internet: http://www.erhard.de
Page 5 of 13