Installation & Operation Manual
Proven Quality since 1892
ECON butterfly valves Series 67 & 68 Page 3of 6ww.eriks.com
Rev.1
3. Requirements for maintenance staff
The staff assigned to assembly, operating and maintenance tasks should be qualified to carry out
such jobs and in any circumstance, ensure personal safety.
4. Transport and storage
The valve must be transported and stored dry and clean. In humid rooms, a drying material or
heating must be used to avoid condensation. The valve is supplied with the disc in a slightly open
position. This will have to remain until the installation is complete. (Fig.1) . The paint is a base coat
to protect against corrosion during transportation and storage. Do not damage the paint protection.
Fig. 1
5. Function
ECON butterfly valves are designed for interruption or restriction of the flow of liquids and gases.
The valve is closed by turning the lever clockwise; please don’t use tools to increase the torque on
the lever.
6. Application
Please make sure that the valve intended for installation is suitable for the service conditions
prevailing. The ECON butterfly valves are used for industrial systems gases and liquids. The
valves are designed for standard operating conditions. For the use of extreme conditions e.g.
aggressive or abrasive media, it is recommended to mention this at the ordering stage, to verify
whether the valve is suitable. The installation designer is responsible for the valve selection,
suitable for the working conditions. The valves are unsuitable, without written permission of an
ERIKS company, to apply for hazardous media as referred into Regulation (EC) No 1272/2008.
7. Installation
Flange facings must be smooth and clean. Rust, welding scores, rests of paint, dirt, etc. must be
removed. ECON butterfly valves Series 67, in wafer style design, are suitable for installation
between DIN PN10, PN16 and ANSI150 flanges. Please consult our website www.eriks.com
concerning the allowed flange dimensions. For the installation of valves between flanges of other
standards consult ERIKS or its authorized distributors.
When installed in a horizontal pipeline it is recommended that the butterfly valve is to be
mounted with the stem in a horizontal position, as such that the bottom of the disc will open in
the direction of the flow. This prevents sludging of the flow and accumulation of dirt. (See
figure 2).
The contact surfaces of the flanges must be smooth and clean. Rust, spatter, dirt and paint is
to be removed to prevent damage to the lining.
Flange gaskets are not allowed to use ( See figure 3)
Please be informed that also the Lug type butterfly valves Series 68 have to be installed
between flanges and can’t be used as end of line valve.
