Richter GU/F Series, Installation And Operating Manual

Page: 9 / 28

Series GU/F
Page
9
9530-020-en Revision 15
TM 10477 Edition 05/2022
5.1 Storage
If the valve is not installed immediately after delivery,
it must be put into proper storage.
It should be stored in a dry, vibration-free and well-
ventilated room at as constant a temperature as
possible.
In general, a storage period of 10 years should not be
exceeded.
Store the valve in an upright position and secure it
from falling over!
In case of prolonged storage individual packing with a
desiccant may be necessary. Pay attention to local
site.
5.3 Return consignments
Valves which have conveyed aggressive or
toxic media must be well rinsed and cleaned
before being returned to the manufacturer's
works.
It is imperative to enclose a safety information
sheet / general safety certificate on the field of
application with the return consignment.
Pre-printed forms are enclosed with the installation
and operating manual.
Safety precautions and decontamination measures
are to be mentioned.
5.4 Disposal
Parts of the valve may be contaminated with medium
which is detrimental to health and the environment
and therefore cleaning is not sufficient.
Risk of personal injury or damage to the
environment due to the medium!
♦
Wear protective clothing when work is performed
on the valve.
♦
Prior to the disposal of the valve:
▪
Collect any medium, etc. which has escaped
and dispose of it in accordance with the local
regulations.
▪
Neutralise any medium residues in the valve.
♦
Separate valve materials (plastics, metals, etc.)
and dispose of them in accordance with the local
regulations.
6 Installation
The installation conditions to the AD 2000 Code
A2 (on pressure vessels) and TRD721 are to be
observed. They are major preconditions for the
safe operation of the valve.
♦
Examine valve for in-transit damage, damaged
overflow and pressure relief valves do not install.
♦
Before installation the valve and the connecting
pipe must be carefully cleaned to remove any dirt,
especially hard foreign matter.
♦
During installation, pay attention to the correct
tightening torque, aligned pipes and tension-free
assembly.
6.1 Sizing of the outlet line
The admissible pressure loss in the inlet line
must not exceed 3% of the set pressure of
the overflow valve.
The determination of the pressure loss relates to the
maximum flow of the valve at 110% of the set
pressure and 110% of the certified coefficient of
discharge.
♦
An excessive pressure loss at the inlet of the
overflow valve can cause rapid opening and re-
seating of the valve or chattering.
♦
Chattering results in a reduction in the discharge
capacity and may cause an inadmissible rise in
pressure in the system and damage to the seat
sealing surfaces.
♦
The inlet line must never be smaller than the
nominal diameter of the overflow valve inlet.
♦
Lay supply lines as short as possible.
♦
Install, if at all possible, the valve directly on the
container to be protected.
♦
At least chamfer the container nozzle in the inlet or
even better provide with a radius.
♦
An inlet nozzle with a tapered design has the best
shape in terms of flow.