Table of Contents General VAG reserves the right to make technical changes and use materials of similar or better quality without express no- 1.1 Safety tice. The pictures are non-binding. 1.2 Proper use 1.3 Identification Transport and Storage 2.1 Transport 2.2 Storage...
These Operation and Maintenance Instructions must be observed uct-related documentation (KAT-A 1331). and applied at all times along with the general “VAG Installation and Operation Instructions for Valves” (see www.vag-group.com / For any deviating operating conditions and applications, the man- Category: Installation and Operation Instructions).
+5° C before installation and before it is put into operation. Product features 3.1 Features and function description VAG CEREX 300 Butterfly Valves are always used for shutting off ® the medium. Figure 1: Transport position VAG Operation and Maintenance Instructions • 4...
As a standard, the valve is supplied in the following types: tation limits must be observed. WAFER-Type: The operational limits can be calculated either using the VAG UseCAD or the following calculation rules: ® • For insertion between pipeline flanges...
In case a valve is used in continuous control operation, the opera- tion limits need to be coordinated in consultation with VAG be- Make sure that the valve is installed into the pipeline as stress- fore the valve is ordered and/or installed.
If you want to open a valve serving as an end-of-line valve in a diameter of the sealing face of the profiled seal. This is the only pressurised pipeline, please do so with the utmost care to prevent way to ensure that the body of the VAG CEREX 300 Butter-fly ®...
If the valve is installed in the open, it must be protected against prevent malfunction. extreme atmospheric influences (e.g. formation of ice etc.) by ad- • Directly upstream of (3 x DN) and downstream of (3 x DN) a VAG equate covers. CEREX Butterfly Valve an inspection valve, an elbow, T-pieces ®...
If you intend to install valves of larger nominal diameters with the If the valve is used in media containing solid matter or in which disk shaft in vertical position, please consult VAG before you order sedimentation may occur, we also recommend installing the valve and/or install the valve.
VAG does not assume any liability for consequential damage caused by dirt, shot-blasting gravel residue etc. Flange bolts should be fastened evenly and crosswise. This en-...
“OPEN” and “CLOSE” served. must be adapted to the valve. When the items are delivered, the adjustment screws and the VAG Operation and Maintenance Instructions • 11...
Valve related train- operation, check all connections for tightness. Perform the steps ing courses can be undertaken by VAG Service employees. described for initial set-up as described under Section 5 “Set-up and operation”.
Seat of the valve polluted by deposits Flush valve, dismantle, if necessary, and clean seat area High operating forces Valve is dry in pipeline, no medium Valve can be operated more easily when wet present VAG Operation and Maintenance Instructions • 14...