A.R.I. NR-040 EN User Manual
A.R.I. Water equipment
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CHECK VALVE WITH LID
MODEL “EREZ” NR-040
GENERAL INSTRUCTIONS
1. Routine service is an integral part of the standard
procedure for maintenance of a water supply system.
2. Recommended routine maintenance– once or
twice a year, according to the quality and kinds
of the fluids in the system.
A. Installation
The valve can be installed either horizontally or
vertically , while the flow is toward the upper part.
The counter weight assembly (1 ) will be installed
so the arm turns down at a 45
0
angle when the
valve closes.
Shut-off valve – in order to allow maintenance and
removal of the valve, a shut-off valve will be
installed before the inlet and / or after the outlet of
the valve, according to the conditions in the
pipeline.
It is recommended drainage valves before and after
the valve in order to release the pressure and to
drain the line.
Stainless Steel shaft (15) – it is forbidden to weld
or to coat the shaft.