Richter SGS/F Series Sight Glasses - Manual (Page 4)

Series SGS
Page 4
9540-055-en Revision 01
TM 6744 Edition 04/2007
Cylindrical glass screws
Flange nom.
size
Screws Tightening
torque
[mm] [inch] [ISO/DIN] [Nm] [in-lbs]
15 ½ 4 x M8 10 89
20 ¾ 4 x M8 10 89
25 1 4 x M8 15 133
32 1¼ 4 x M8 15 133
40 1½ 4 x M12 25 222
50 2 4 x M12 35 310
65 2½ 4 x M12 35 310
80 3 8 x M16 60 531
100 4 8 x M16 60 531
1.3 Pressure-temperature
diagram
When used in the minus temperature range,
the regulations applicable in the country in
question must be observed.
2 Notes on safety
This operating manual contains fundamental
information which is to be observed during installation,
operation and maintenance. It must therefore be read
before installation and commissioning.
For valves which are used in potentially explosive
areas, see Section 3.
Installation and operation are to be performed by
qualified staff.
The area of responsibility, authority and supervision of
the staff must be regulated by the customer.
General hazard symbol!
People may be put at risk.
Safety symbol! The cylindrical sight glass
and its function may be put at risk if this safety
symbol is not observed.
It is imperative to observe warnings and signs
attached directly to the cylindrical sight glass and they
are to be kept fully legible.
Non-observance of the notes on safety may result
in the loss of any and all claims for damages.
For example, non-observance may involve the
following hazards:
Failure of important functions of the sight
glass/plant.
Risk to people from electric, mechanical and
chemical effects.
Risk to the environment through leaks of hazard-
ous substances.
2.1 Intended use
Richter sight glasses of the series SGS are pressure
relief components in accordance with the Pressure
Equipment Directive (PED) for the passage of fluids
with all-round vision into the internal chamber. The
sight glasses are suitable for vapours, gases and
liquids of group 1 according to the PED and have a
corrosion-resistant plastic lining.
They are used to observe the flow, filling level,
condition, colour and gas contents of media in pipes
and containers and near pumps.
Richter sight glasses are designed
for pure and slightly solids-laden media
for media where stainless steel is not corrosion-
resistant
as an alternative to valves made of expensive
special metals (Hastelloy, monel, tantalum etc.)
for metal-reactive media, e.g. H
2
O
2
for pure media where the good cleaning possibili-
ties and anti-adhesive surfaces of the sight glass
are important.
Solids can lead to increased wear, leaks, damage to
sealing surfaces or to a reduction in the service life of
the sight glass.
If the sight glass is intended for operating data other
than those intended, the customer must carefully
examine whether the design of the sight glass,
accessories and materials are suitable for the new
application (consult the manufacturer).