Samson 33-7, Mounting And Operating Instructions, Page: 18 / 58

3-4 EB 2551-2 EN
Design and principle of operation
3.2 Technical data
The regulator nameplate provides informa-
tion on the regulator version (see the 'Mark-
ings on the device' section).
More information is available in Data Sheet
u
T 2551.
Conformity
The Type 33-7 Regulator bears both the CE
and EAC marks of conformity.
Process medium and scope of application
The Type 33-7 Safety Excess Pressure Valve
(SEV) is used to maintain the pressure up -
stream of the regulator to an adjusted set
point.
− Suitable for gases and liquids
− Max. temperature 150 °C
− Set points from 1 to 11 bar
− Flow rate set point from
0.05 to 520 m³/h
− Valve size DN 65 to 250
− Pressure ratings from PN 16 to 40
The regulator is closed when relieved of
pressure. The valve
opens when the up -
stream pressure rises.
Leakage class
The soft-seated regulator has the leakage
class IV according to IEC 60534-4.
Note
Type test
The device has been typetested as a safety
excess pressure valve (SEV) by the German
Technical Inspectorate (TÜV) according to the
requirements stipulated in the AGFW (Ger
-
man District Heating Association) document
FW 504 (see Table 3-1).
The test mark is available on request.
Temperature range
Depending on how the regulator is config -
ured and the process medium used, it can be
used up to temperatures of 150 °C (see Ta -
ble 3-1). The minimum temperature is limited
by the accessories used and the actuator's
diaphragm material (
u
T 2551).
Noise emissions
SAMSON is unable to make general state-
ments about noise emissions. The noise emis-
sions depend on the regulator version, plant
facilities, process medium and operating
conditions.
Dimensions and weights
Table 3-4 provides a summary of the dimen-
sions and weights. The lengths and heights
in the dimensional drawing are shown on
page 3-7.