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1.
MAIN FEATURES
The modulating valves in the MPV [Modulating Plug Valve] series have been designed
with a modern concept and they are DVGW approved, with CE identification number.
They are suitable to be used in commercial and industrial combustion systems.
They are especially suitable for the proportional adjustment of non corrosive fuel gases
from the first, second and third family and air. The MPV valve is an adjustment device
without zero closing. The actuator is equipped with a single-pole bi-directional motor
with high static torque and holding torque for 3-positional control or electronic
modulation with analogic signal current [4 ÷ 20 mA] or tension [0 ÷ 10 Vdc] variation
at. The adjustment of flow volume in the valve operates by a delivery adjusting
cylinder with linear characteristics. The cylinder rotation changes the passage opening
and the flow volume is adjusted according to a linear trend.
Three different orifice sizes are available according to the operating conditions,
interchangeable without removing he valve from the plant.
WARNING
Installation, wiring, adjustment and maintenance of gear motors must be carried out
exclusively by skilled and authorized service technicians. Non-proper installation,
adjustment, modifications, use and maintenance may cause injuries to the staff or
material damages. It is therefore necessary to respect strictly the following
instructions and local prescriptions for the installation of electric and gas devices.
2.
TECHNICAL FEATURES
Operating pressure
:
max. 500 mbar
Valve group
:
2
Ambient temperature
:
from -10 to +60°C
Adjusting ratio
:
25:1
Fittings
:
Rp 1, according to ISO 7-1
Delivery feature
:
linear
Valve
:
without zero closing
Available voltage
:
230 Vac / 50 - 60 Hz
115 Vac / 50 - 60 Hz
24 Vac / 50 - 60 Hz
Nominal load
:
7 VA
Electric protection
:
IP 54 according to EN60529
Duty cycle
: continuous 100%
Cable fasteners
:
2 x Pg 13.5
Opening/closing times
:
30 ÷ 60 seconds at 50 Hz
Limit - Aux. switches rating
: 5 [1] A 250 Vac
Available potentiometers
: 150, 1000 [standard], 2500 ohm
Control signal
:
4 ÷ 20 mA [only with supply voltage 24 Vac]
[for electronic version]
:
0 ÷ 10 Vdc [only with supply voltage 24 Vac]
Accessories :
adjustable
manual
by-pass
