VAG Operation and Maintenance Instructions • 3
1 General
1.1 Safety
These Operation and Maintenance Instructions must
be observed and applied at all times along with the ge-
neral “VAG Installation and Operating Instructions for
Valves” (see www.vag-group.com / Category: Installa-
tion and Operating Instructions).
Arbitrary alterations of this product and the parts supplied with it
are not allowed. VAG will not assume any liability for consequen-
tial damage due to non-compliance with these instructions.When
using this valve, the generally acknowledged rules of technology
have to be observed (e.g. national standards, EN 1074 Part 1 / 2
etc.). The installation must only be carried out by qualified staff
(see also Section 7.1 General safety instructions). For further tech-
nical information such as dimensions, materials or applications,
please refer to the respective documentation (KAT 1310-A).
VAG valves are designed and manufactured to the highest stan-
dards and their safety of operation is generally ensured l. How-
ever, valves may be potentially dangerous if they are operated
improperly or are not installed for their intended use.
Everyone dealing with the assembly, disassembly, operation,
maintenance and repair of the valves must have read and under-
stood the complete Operating and Maintenance Instructions (Ac-
cident Prevention Regulations and ANSI Z535).
Before removing any protective devices and/or performing any
work on the valves, depressurise the pipeline section and ensure
it is free of hazards. Unauthorised, unintentional and unexpected
actuation as well as any hazardous movements caused by stored
energy (pressurised air, water under pressure) must be prevented.
In case of equipment that must be monitored and inspected, all
relevant laws and regulations, such as the Industrial Code, the
Accident Prevention Regulations, the Ordinance of Steam Boilers
and instructional pamphlets issued by the Pressure Vessels Study
Group must be complied with. In addition, the local accident pre-
vention regulations must be observed.
If a valve serving as an end-of-line valve is to be opened in a pres-
surised pipeline, this should be done with the utmost care to pre-
vent the emerging fluid from causing damage. Care must also be
taken when closing the valve to avoid crushing or trapping.
When a valve needs to be dismantled from a pipeline, fluid may
emerge from the pipeline or the valve. The pipeline must be emp-
tied completely before the valve is dismantled. Special care needs
to be taken in case of residue which may continue flowing.
1.2 Proper use
The VAG EKN
®
Butterfly Valve is a shut-off valve designed for
installation in pipelines.
The VAG EKN
®
Butterfly Valve is intended to shut off the medium.
Its use as a control valve is only possible within certain limits.
For the respective technical application ranges (e.g. operating
pressure, medium, temperature) please refer to the product-rela-
ted documentation (KAT 1310-A).
For any deviating operating conditions and applications, the
manufacturer’s written approval must be obtained!
These Operation and Maintenance Instructions contain important
information on the safe and reliable operation of the VAG EKN
®
Butterfly Valve.
Observing these Operation and Maintenance Instructions helps
you to:
• Prevent hazards
• Reduce repair costs and down-time of the valve and/or the en-
tire equipment
• Improve the operational safety and useful life of the equipment
• These Operating and Maintenance Instructions apply to all ty-
pes of the VAG EKN® Butterfly Valve including all material and
coating varieties.
1.3 Identification
According to DIN EN 19 all valves bear an identification label spe-
cifying the nominal diameter (DN), nominal pressure (PN), body
material and the manufacturer’s logo.
A rating plate is attached to the body and contains at least the
following information:
VAG
Manufacturer’s name
DN
Nominal diameter of the valve
PN
Nominal pressure of the valve
Body material
Date of manufacture
2 Transport and Storage
2.1 Transport
For transportation to its installation site, the valve must
be packed in stable packaging material suitable for the
size of the valve. It must be ensured that the valve is
protected against atmospheric influences and external
damage. When the valve is shipped under specific cli-
matic conditions (e.g. overseas transport), it must be
specially protected and wrapped in plastic film and a
desiccant must be added.
The factory-applied corrosion protection and any assemblies
must be protected against damage by external influences during
transport and storage.
The VAG EKN
®
Butterfly Valve must be transported
with its disk slightly open. For transport, place the val-
ve onto its inlet-side flange or on the flange flat base
with the bearing lugs facing upwards.
Picture 1: Transport position - on inlet-side flange
