Gas trains

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1

Shut off Ball Valve
To isolate the system from main supply.

2

Solenoid Valve
Is  suitable to garantee the gas interception from gas detector in case of gas leaking.

3

Jerk Handle Valve
Manually operated valve that allow the flow inside the piping while minimizing the pressure losses. With the possibility of remote interception operation; the closing is faster and safer than traditional ball devices.

4

Pressure Gauge
To monitor upstream and downstream pressure, the pressure gauges are installed. Isolation valve is provided with each pressure gauge for easy replacement of pressure gauges in case of failure.

5

Gas Filter
Protects rest of the system from any debris or dust that may carried with gas stream. Debris may for example consists of parts accidently left in the pipe during construction.

6

Slam Shut Off Valve
Is installed after Filter and before pressure regulator. The slam shut valve closes the supply of gas When a downstream pressure exceeds a pre-determined limit.

7

Gas Governor
Is a control valve that reduces the input pressure of a fluid to a desired value at its output.

8

Pressure Gauge
To monitor upstream and downstream pressure, the pressure gauges are installed. Isolation valve is provided with each pressure gauge for easy replacement of pressure gauges in case of failure.

9

Safety Relief Valve
Is a set higher pressure than slam shut off valve so that the safety relief will operate when Slam shutt off valve fails to operate.

10

Pressure Switch
Are designed for switching a circuit on, off or over if the pressure actual valvue changes in relation to the setpoint.

11

Solenoid valve
For gas are designed for safeguarding and controlling the air and gas supply to gas burners and gas appliances.

BALL VALVES

Ball valves are suitable to shut-off air and gas belonging to the first, second and third gas family. The ball valves can be supplied with thread or flange connections. They are CE certified according to EN331 for the thread
version and according to EN13774 for the flanged version.

  • manual operated (on request with lockable lever)
  • with electric actuator
  • with pneumatic actuator
Housing of thread valveNickel plated brass
Housing of flanged valveCast-iron GJS 400-15
O-ringNBR
SeatPTFE
Max. Operating pressure5 bar (thread version)
16 bar (flanged version)
Operating temperatur-20 °C up to +60 °C
Connection1/4″ up to 4″ thread connection (brass)
DN15 up to DN200 flange connection (cast iron)

GASREGULATING VALVES

The butterfly valves are suitable to be used on residential and industrial combustion systems. The valves are DVGW approved to the Norm EN 161.

The valves are pure control valves without zero shut-off (leakage approx. 1 % of max.  KV value) and do not be used as shut-off devices.

  • manual operated (on request with lockable lever)
  • with electric actuator
  • with pneumatic actuator
HousingAluminium
ShaftAISI 303
PlateAluminium or AISI 304
Max. Operating pressure500 mbar
Operating temperaturGas: -10 °C up to +60 °C
Air: -10 °C up to +80 °C
(up to 200 °C on request)
Control ratio10:1

STAINLESS STEEL COMPENSATOR

Metal flexible joints suitable for the installation of gas burners, using air under pressure, enable vibration isolation and compensate for the misalignment of ducting.

The joints are fitted with threaded male-male connections. Flanges in carbon steel are loose, enabling alignment of the holes of flanges and counter-flanges, avoiding detrimental tensions and facilitating their assembly.

MaterialAISI 321
Max. temperature300 °C
Max. pressure10 bar
Length150 – 200 mm
Connection1/2 inch up to 2 1/2 inch (thread connection)
DN50 up to DN250 (flanged connection)

FLEXIBILE CONNECTING HOSES

The metal flexible pipes are particularly suitable for the feeding of burners for methane gas or other fuel gas of the first, second and third family and air in industrial combustion systems. They are manufactured according
to norm DIN 3384. Available with female thread connection, male thread connection or flanges.

MaterialAISI 321/304
Temperature range-20 °C bis +600 °C
Max. pressure16 bar (air)
4 bar (gas)
Lengthnas needed
Connections3/8 inch up to 2 inch (thread connection)
DN10 up to DN100 (flanged connection)

GASFILTERS

Gas filters according to DIN 3386, can be used for all the types of natural gas, LPG or not corrosive gases. These filters are widely used for protection of control devices, pressure regulators, meters and on systems
that requiring an high degree of filtration.

GASPRESSURE
REGULATOR

The gas pressure regulators are spring-loaded gas regulators with balanced plug, diaphragm command and contrast action by spring, suitable for low and medium pressure. Regulator and shut-off device are supplied with internal sensing lines. Both regulator and shut-off device are preset for connection to an external sensor line by the customer. They are widely used either in civil or industrial plants. Not suitable for aggressive gases.

Spring-loaded regulators operate automatically with relieved piston and double safety diaphragm. The double diaphragm allows the device to be used in a control cabinet without connecting an external pipe vent. (point 3.3.2 of the EN 88 standard). All regulators have an internal measuring line and a test point for the inlet and outlet pressure.

Max. inlet pressure0,5; 1; or 2 bar
Outlet pressure10 up to 300 mbar
Connection1/2 inch up to 2 inch (thread connection)
DN25 to DN150 (flanged connection)
Temperature range-20 °C up to +60 °C
ApprovalDIN EN 88-1:2011 PED

SLAM SHUTT OFF VALVE

This is a safety device which quickly intercepts gas flow when the pressure it is monitoring reaches a pre-set limit due to any anomaly in the system. The reset after release has to be done manually. Not suitable for aggressive gases.

Max. Operating pressure0,5; 1; or 2 bar
Release value10 up to 300 mbar
Closing time1/2″ up to 2″ (thread connection)
DN25 to DN150 (flanged connection)
Allowed ambient temperature-20 °C up to +60 °C
ApprovalDIN EN 88-1:2011 PED

SAFETY RELIEF VALVES

Pressure relief valves are suitable for application on domestic and industrial combustion plants for automatic pressure release for peaks of the flow of gases belonging to the first, second and third family. They are normally applied on the most common combustion plants like furnaces, boilers, dryers and compact burners. Not suitable for aggressive gases.

Pmax1 bar
Triggering range200 – 600 mbar
Temperature range-20 °C up to +60 °C
Connection1/2 inch up to 2 inch (thread connection)
DN25 up to DN150 (flanged connection)
HousingAluminium
SealingNBR 60Sh – DVGW EN 59
Approval2014/68/UE PED

SOLENOID VALVES

Solenoid valve is applied as relief valve on gas trains. The valve shut-off the flow when it is energized. The quite operation of the valve allows installation by residential and industrial application. Suitable for various gases including natural gas, propane and LPG. Solenoid valve optionally NO or NC (normally open oder normally closed). Not suitable for aggressive gases.

Special versions available

  • Fast closing < 1 s and slow opening 0,5 up to25 s adjustable
  • Stage valve with 2 coils (Step 1with reduced flow rate, step 2 with full flow rate)
  • Valve group
  • Air valve (open with no voltage applied)
  • Solenoid valve with manual reset

PRESSURE GAUGE

The dial pressure gauges are specially conceived for the measurement of low pressures ranging in mbar, according to EN 837-3 or high pressure in bar. They are suitable to be used on natural gas combustion systems and to measure pressure of non-corrosive fluids at the gaseous state. They are available with 1/4” – 3/8” – 1/2” radial male connection and with 63 – 80 and 100 mm dial diameter size. The standard version is equipped with dual scale in mbar and in H2O mm. A shut-off valve is installed upstream of each manometer to allow easy replacement of the manometers in the event of a fault.

PRESSURE SWITCHES

Pressure switches and differential pressure switches are suitable for application on domestic and industrial combustion plants for detection of pressure of gas belonging to the first, second and third family and air. They are normally applied on the most common combustion plants like furnaces, boilers, dryers and compact burners. The pressure switches are certified , according to norms EN 1854. The switching point is adjustable via hand wheel.

Pmax500 mbar/690 mbar/1 bar
Pressure switch0,4 to 500 mbar
HousingBrass/Aluminium
DealingNBR
Temperature range-15 °C up to +60 °C
Switching capacity6 A/250 V AC
Protection classIP 54/IP 44 as differential pressure switch
Connection¼”

GAS FLOW QUANTOMETER

Quantometers, designed in order to provide a reliable and inexpensive measuring device (non fiscal), with features alike those of fiscal turbine meter, are maintenance free nd can be logged onto external instrumentation.
Quantometers fulfil various requirements of industrial metering to control the flow of gas precisely and therefore optimise the use of energy.

Turbine gas meters work on the principle of the ratio among gas moving through the meter and wheel speed. A mechanical/magnetic coupling activates the measuring unit on the top of the quantometer reporting the gas volume at operating. Quantometers are CE certified and PED 2014/68/EU approved.

BURNER CONTROL UNIT
(EFC series)

The EFC range of burner control units are designed to detect a flame is single or double stage industrial gas burners with intermittent service. The status of the burner is clearly show via the varius LED lights on the front panel. The EFC can be supplied with an internal ignition transformers and can also control one or two solenoid valves. Flame detection can be done via a single rod, two rods or UV cell. Remote control of the burner control unitis also possible. The EFC range is supplied in a thermoplastic fireproof housing that allows for installation next to the burner. It is also avaliable in a rack mounted version for control panel applications.
Burner control unit EFC is manufacted in accordance with EC Directive 90/396/EEC and with norms ED298.

VALVE PROVIDING SYSTEM MTC10

MTC10 s a device used to verify the tightness of the both automatic valves before every start-up of the burner or after every shut down. Whenever a leakage is detected at one of the gas valves, MTC10 prevents the burner from starting up. MTC10 is made in compliance to norm EN746-2 that states that installation of tightness control is mandatory in plants with power over 1200 kW.

This device may be used on industrial and domestic gas burners with or without venting pipe. CE certified according EN1643. Conformity according to Directive  2009/142/CE (gas directive), Directive 2004/108/CE (EMC) and Directive 94/9/CE (directive ATEX).