ALFA LAVAL UNIQUE RV-ST VALVE INSTRUCTION MANUAL—REV 8/21
6 Technical data
It is important to observe the technical data during installation, operation and maintenance.
Inform personnel about the technical data.
6.1 Technical data positioner
The valve is remote-controlled by a digital electro-pneumatic process controller. It has few and simple moveable parts which
results in a very reliable valve.
M
Maatteerriiaall::
Body
PPS, Stainless Steel
Cover
PC
Sealing
EPDM
Power supply
24 VDC +/- 10%
Ripple
10%, no technical direct current
Setpoint setting
4 to 20 mA
Output resistance
180
Ω
C
Coonnttrrooll m
meeddiiuum
m::
Neutral gases, air DIN ISO 8573-1
Dust concentration
Class 5 (<40µm particle size)
Particle density
Class 5 (<10mg/m
3
)
Pressure condensation point
Class 3 (<-20°C/68°F)
Oil concentration
Class 5 (<25mg/m
3
)
Ambient temperature
0 to +60
°
C/32 to 140°F
Pilot air ports
Push-in connector (external ø6 mm or 1/4") or threaded ports G1/8
Supply pressure
Low air flow rate 5 to 7 bar
1)
Air input filter
Exchangeable (mesh aperture
~
0.1mm)
Position detection module
Contact-free, wear-free
Stroke range valve spindle
3 to 28 mm
Installation
As required, preferably with actuator in upright position
Protection class
IP 65/67 according to EN 60529 (NEMA4x in preparation)
Power consumption
< 3.5 W
E
Elleeccttrriiccaall ccoonnnneeccttiioonn::
Cable gland (in preparation)
1xM16x1.5 (cable-ø5-10mm), terminal screws (1.5 mm
2
)
Protection class
3 according to VDE 0580
Conformity
CE acc. to EMC 2004/108/EC
1) The supply pressure has to be 0.5-1 bar / 7.25-14.5 PSI above the minimum required pilot pressure for the valve actuator.
6.2 Technical data - valve/actuator
D
Daattaa -- vvaallvvee//aaccttuuaattoorr
Max. product pressure
10 bar (1000 kPa) (145 psi)
Min. product pressure
Full vacuum (depending on product specifications)
Temperature range
-10
°
C to + 140
°
C / 14 to 284°F (standard EPDM seal)
Air pressure, actuator
5 to 7 bar (500 to 700 kPa) (72.5 to 101.5 psi)
M
Maatteerriiaallss -- vvaallvvee//aaccttuuaattoorr
Product wetted steel parts
AISI 316L (internal Ra < 0.8 / 31.5 µin)
Other steel parts
AISI 304
Product wetted seals
EPDM (standard)
Optional product wetted seals
HNBR and FPM
Other seals
NBR
41
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