ERHARD ERU K1 User manual
BA46E032
Operating Instructions
ERHARD ERU Knife Gate Valve K1
DN 50 - 600
With FESTO COPAC 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 moving range of the gate of ERU Knife Gate Valves with piston actuator
has to be restricted by means of protective devices. Effective protective devices have
to be installed by the user.
On request, we will supply suitable protective guards.
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 1 of 15
Operating Instructions for ERU Knife Gate Valve K1 with FESTO COPAC Actuator
2 Description of Product and Range of Application
Type/Design DN Product Number
ERU Knife Gate Valve K1 50-350 4657.... PN10
ERU Knife Gate Valve K1 with regulating orifice 50-350 4623.... PN10
ERU Knife Gate Valve K1 400-600 4607.... PN4
ERU Knife Gate Valve K1 with regulating orifice 400-600 4608.... PN4
Hydr. test pressure in bars
for
Max. admissible
working pressure in
bars at a working
temperature of
Product No.
Nominal
size
DN
Nominal
pressure
PN
Body Seat max. 70° C
4657, 4623
4607, 4608
50 - 350
400-600
10
4
15
6
10
4
10
4
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.
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 2 of 15
Operating Instructions for ERU Knife Gate Valve K1 with FESTO COPAC Actuator
3 Design Features – Technical Data
Drawing 3E 63404
ERU Knife Gate Valve K1 with FESTO COPAC Actuator
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 3 of 15
Operating Instructions for ERU Knife Gate Valve K1 with FESTO COPAC Actuator
Dimensioned table (for drawing 3E 63404)
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 4 of 15
Operating Instructions for ERU Knife Gate Valve K1 with FESTO COPAC Actuator
4 Performance and Mode of Operation
ERU Knife Gate Valves K1 are wafer-type single-door gate valves with short face-to-
face dimension. A special type of these valves, e.g. with regulating orifice, is also
suitable for regulating purposes. The solid gate slides in a long gate guide between
two body components. It seals on its periphery against a rubber-resilient, steel-
reinforced, enclosed U-shaped sealing element. Where the gate leaves the body,
tightness to the outside is ensured by a resiliently prestressed profile seal which can
be readjusted. For reducing wear and tear of the profile seal and the actuating
elements the prestress can be reduced to the dimension required for the actual
operating pressure.
The Gate Valves were tested for tightness and resistance to DIN EN 12266 and DIN
EN 1074 at the manufacturer's plant. They are designed for flow acting from any
direction.
The pressurized piston moves the gate in OPEN-CLOSED direction by means of the
piston rod.
The limit positions are limited by piston stops in the cylinder. The piston actuator is
suitable for the supply medium: filtered and oiled compressed air or filtered and
compressed air without oil.
Note: if oiled air is used, the actuator must continue to be supplied with oiled air, too
(the original lubricant is flushed out by the oil).
Operating Limits of Standard Design
ERU Knife Gate Valve K1 DN50-600 PN10/4
Required supply pressures for piston actuators
DN 50 65 80 100 125 150 200 250 300 350 400 500 600
Cyl. 80 80 100 100 125 100 125 125 160 160 250 160 250 160 250 250 250 250 320
Diameter
Working-
Pressures
Minimum supply pressures
Bars
4 3 3 4 3,5 3 3,5 3 4 2 4 2 6 3 5 3 3 5 5 5
6.0 3 3 4 5 4 5 4 5 3 5 3 7 4 6 4 4
10.0 4 4 5 5 5 5 5 5 5 8 5 8 5 8 5 5
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 5 of 15
Operating Instructions for ERU Knife Gate Valve K1 with FESTO COPAC Actuator
Air consumption at 6 bars supply pressure (theoretical values) in [Nl]
DN 50 65 80 100 100 125 125 150 150 200
Cyl.
Diameter
80 80 100 100 125 100 125 125 160 160
Opening 1,65 2,15 4,24 5,3 8 6,65 10 12,9 20,3 27
Closing 1,75 2,275 4,4 5,5 8,6 6,625 10,75 12 21,15 28,2
DN 200 250 250 300 300 350 400 500 600
Cyl.
Diameter
250 160 250 160 250 250 250 250 320
Opening 67 33,8 83,8 40,5 100,5 117,3 134 167,5 332,4
Closing 68,8 35,3 86 42,3 103,2 120,4 137,6 172 337,8
5 Storage
Store ERU Knife Gate Valves K1 in their closed position. Rubber-coated components,
as e.g. the sealing element between the body parts, have to be protected against
direct solar radiation. Avoid the effects of radiant heat, e.g. from heaters.
6 Installation into the Pipeline - Mounting
Remove all packing material from the valve. Prior to installation, check the pipeline for
impurities and foreign bodies and clean it if necessary.
+There must be free access all around the valve for operation and
maintenance.
In case of flow media containing solid matters as e.g. sand etc. and installation into
horizontal pipelines the stem or the piston rod should not be installed with an
inclination of more than 30º towards the horizontal. Thus, free flushing of the travel
range of the gate is possible.
In case of deviating installation positions, especially with suspended stem or piston
rod, deposits around the gate have to be expected. This could lead to mal-functions
which increase maintenance work.
During installation of the valve, the distance between the pipe flanges should exceed
the valve face-to-face dimension by at least 20 mm. Thus, the raised faces will not be
damaged and the gaskets can be inserted. Steel-reinforced rubber seals to DIN 2690
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 6 of 15
Operating Instructions for ERU Knife Gate Valve K1 with FESTO COPAC Actuator
are recommended for use as flange gaskets, for slip-on flanges they are absolutely
necessary (consider resistance to flow medium and temperature).
The mating pipe flanges must be plain-parallel and concentric.
Tighten the connecting bolts evenly (without distortion) and crosswise. The pipeline
mustn't by any means be pulled up to the valve.
If the distance between the flanges is too large for the valve, use thicker gaskets to
cover the difference.
ERU Knife Gate Valves K1 are
- clamped between two flanges of the pipeline (wafer type) or
- screwed to the end flange of the pipeline as end-of-line valves.
The screwed connection with the pipeline is made from flange to flange by means of
bolts in the through-going holes. For the threaded blind holes the screwed connection
is made by means of stud bolts or bolts in the body components.
It is possible to roughly fasten the valve by means of the threaded holes.
The necessary connecting elements for the corresponding installation position are
shown in drawing No. (4E127 920).
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 7 of 15
Operating Instructions for ERU Knife Gate Valve K1 with FESTO COPAC Actuator
Connecting elements for flange connection (to drawing 4E127920)
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 8 of 15
Operating Instructions for ERU Knife Gate Valve K1 with FESTO COPAC Actuator
7 Initial Operation
After installation, the valve has to be checked for smooth operation.
It has to be moved at the operating element over the whole travel (OPEN-CLOSED).
In case of lower working pressures, after having carried out the pressure test of the
pipeline, the profile seal can be released to be adapted to the effective working
pressure. For this purpose, the bolts on the cover plate have to be loosened in an
appropriate manner. By means of this measure you can reduce wear and tear of the
components involved in the motion.
ATTENTION! The flow medium may penetrate. Wear safety clothing (safety
goggles) in case of toxic or caustic media.
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 9 of 15
Operating Instructions for ERU Knife Gate Valve K1 with FESTO COPAC Actuator
8 Operation
Trouble Possible Causes Remedy
Leakage at the
cover plate
Prestress too low Readjustment of cover plate
see paragraph “9 Maintenance“
Wearing of the profile seal Replace profile seal
Contamination
(deposit on the gate)
With valve in open position:
clean and grease gate
Seat leakage Contamination of the gate With valve in open position:
clean and grease gate
Defective U-shaped sealing
element
Replace sealing element
Excessive operating
forces
Contamination (deposit) on the
gate
With valve in open position:
clean and grease gate
Stem running dry Regrease thread
Operation blocked Residues of flow medium are
hardened
Relieve pipe section from pressure.
Clean and grease all accessible surfaces
of gate and stem. Slacken cover plate.
Slightly unscrew upper body bolts. Knock
on the valve with a rubber mallet trying to
operate the valve. If you are not
successful: remove, dismantle, clean,
replace damaged parts.
Foreign bodies jammed in the
seating zone
Move valve in OPEN position and repeat
closing procedure
BA46E032
August 2003
Rev. 5
ERHARD-Armaturen xD-89502 Heidenheim xPostfach 1280
(07321) 320-0 (07321) 320 491 e-mail:info@erhard.de
Internet: http://www.erhard.de
Page 10 of 15
Other manuals for ERU K1
1
Table of contents
Other ERHARD Control Unit manuals
Popular Control Unit manuals by other brands
Festo
Festo Compact Performance CP-FB6-E Brief description
Elo TouchSystems
Elo TouchSystems DMS-SA19P-EXTME Quick installation guide
JS Automation
JS Automation MPC3034A user manual
JAUDT
JAUDT SW GII 6406 Series Translation of the original operating instructions
Spektrum
Spektrum Air Module System manual
BOC Edwards
BOC Edwards Q Series instruction manual
KHADAS
KHADAS BT Magic quick start
Etherma
Etherma eNEXHO-IL Assembly and operating instructions
PMFoundations
PMFoundations Attenuverter Assembly guide
GEA
GEA VARIVENT Operating instruction
Walther Systemtechnik
Walther Systemtechnik VMS-05 Assembly instructions
Altronix
Altronix LINQ8PD Installation and programming manual
