12
EN
IT
MBV
Madas Technical Manual
- 1|1.8a - REV. 0 of 21
th
Jun 2019
2.0 - TECHNICAL DATA
• Use :
gas hot air, natural gas, town gas, LPG and other non aggressive fuels
• Ambient temperature (TS)
: -40 ÷ +60 °C
• Maximum operating pressure
: 200 mbar
• Max. piping speed
: 30 m/s
• Adjusting angle
: Max 90°
• To be coupled with “Wafer” PN 16 flanges :
(DN 40 - DN 50 - DN 65 - DN 80 - DN 100 - DN 125 - DN 150 - DN 200)
ISO 7005 / EN 1092-1
2.1 - MODEL IDENTIFICATION
MBV
= Automatic butterfly solenoid valve with coil
P
= minimum flow adjustment (by-pass) - optional
F
= max flow adjustment - optional
Eg:
MBVPF10
= Automatic butterfly solenoid valve with coil + minimum flow adjustment (by-pass) + max flow adjustment
- DN 100
3.0 - COMMISSIONING THE DEVICE
3.1 - OPERATIONS PRIOR TO INSTALLATION
• It is necessary to close the fluid/gas upstream of the valve prior to installation;
• Make sure that the line pressure
DOES NOT EXCEED
the maximum pressure declared on rating plate data and on technical data;
• Any protective caps (if any) must be removed prior to installation;
• The throttle valve must be installed between two flanges according to EN-1092. We suggest to mount it taking into
consideration a straight pipe length before and after the valve of 2 x DN at least.
• The valve can be mounted even on a vertical pipe, in this case we suggest to check periodically the absence of dirtiness got
on the obturator disc which could change the correct function of the valve.
• If pipe fittings are installed in the pipe, the additional pressure loss must be taken into account.
• Valve pipes and insides must be clear of any foreign bodies;
• Make sure the inlet and outlet pipe flanges are perfectly coaxial and parallel in order to prevent unnecessary mechanical
stress to the body. Also calculate the space to insert the seal gasket;
• With regard to tightening operations, equip yourself with one or two calibrated torque wrenches or other controlled locking
tools;
• With outdoor installation, it is advisable to provide a protective roof to prevent rain from damaging the electrical parts of
the device;
• Prior to carrying out any electrical wiring operations, make sure that the mains voltage matches the supply voltage indicated
on the product label;
• Cut out power prior to proceeding with wiring;
• According to the plant geometry, check the risk of explosive mixture arising inside the piping;
• If the solenoid valve is installed near other devices or as part of an assembly, compatibility between the solenoid
valve and this other device must be evaluated beforehand;
• Provide a protection against impacts or accidental contacts if the solenoid valve is accessible to unqualified
personnel.
3.2 - INSTALLATION
• Assemble the device by flanging it, with the due seals, onto the plant with pipes whose flanges are consistent with the
connection being attached. The gaskets must be free from defects and must be centred between the flanges;
• If, after installing the gaskets, there is still an excessive space in between, do not try to reduce the said gap by excessively
tightening the bolts of the pipe flanges;
• The arrow, shown on the body of the device, needs to be pointing towards the application;
• Insert the relative washers inside the bolts in order to prevent damage to the flanges during tightening;
• When tightening, be careful not to “pinch” or damage the gasket;
