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CNG Reducers Model AT12

Reducer for sequential injection systems

Tomasetto CNG pressure reducer model AT12 is a 2 stages pressure reducer for sequential injection systems. Compact and very reliable, it is homologated in accordance with ECE R110, approved in accordance with the Enargas NAG 415 and NAG 417 and complies with ISO 15500 standards.
The outlet pressure of this reducer is adjustable from 0.10 to 0.25 MPa to obtain always the best performance.
Reducer inlet is provided with an adjustable fitting that has also the connection for pressure manometer.
Tomasetto CNG AT12 pressure reducers is avaiable in different versions: STANDARD, SUPER and SPECIAL. In this range it is also included an LNG version for special applications on liquid natural gas systems.

AT12 STANDARD

Model AT12 Standard version is a 2 stages reducer, equipped with a low pressure solenoid valve (to be used with in-line cng cut-off valve).

AT12 SUPER

Model AT12 super version is a 2 stages reducer, equipped with an integrated high pressure solenoid valve at the inlet. This version allow not to use a line solenoid valve in the system, and it also gives higher performances.

AT12 SPECIAL

Model AT12 special version is like the standard version but without solenoid valve.

AT12 LNG

Model AT12 LNG version, is a single stage reducer for special applications on liquid natural gas systems, equipped with a low pressure solenoid valve. Also avaiable without solenoid valve.

Version STANDARD SUPER SPECIAL LNG
Type of product CNG sequential reducer CNG sequential reducer CNG sequential reducer LNG sequential reducer
Material Die cast aluminium body Die cast aluminium body Die cast aluminium body Die cast aluminium body
Weight 1.45 kg 1.65 kg 1.30 kg 1.10 kg
Dimensions (mm) 120x145x155 mm 110x155x150 mm 110x155x145 mm 110x135x130 mm
Max inlet pressure 26 MPa (260 bar) 26 MPa (260 bar) 26 MPa (260 bar)
1st stage pressure 0.60 Mpa (6 bar) 0,60 Mpa (6 bar) 0,60 Mpa (6 bar) 0,80 MPa (8 bar)
Outlet pressure * adjustable from 120 to 250 kPa adjustable from 120 to 250 kPa adjustable from 120 to 250 kPa adjustable from 120 to 250 kPa
Coil voltage 12 V DC** 12 V DC - - 12 V DC
Coil power 17 W 15 W - - 17 W
Coil connection Fast-on (amp upon request) Amp Minitimer - - Fast-on (amp upon rquest)
Inlet Connection M12x1 pipe ø 6 mm M12x1 pipe ø 6 mm M12x1 pipe ø 6 mm M12x1 pipe ø 8 mm or 1/4NPT (upon request)
Outlet connection Fixed fitting Ø 12,5 mm *** Fixed fitting Ø 12,5 mm *** Fixed fitting Ø 12,5 mm *** Fixed fitting Ø 13,5 mm ***
Engine power **** up to 125 kW up to 250 kW up to 250 kW up to 125 kW w/solen.valve(up to 250 without)
CNG Flow rate (CH4)***** 35 kg/h 70 kg/h 70 kg/h 35 kg/h with solenoid valve (70 kg/h without)
Working temperature -40° C/+120° C -40° C/+120° C -40° C/+120° C -40° C/+120° C
* referred to the MAP
** upon request 24 V DC
*** upon request ø10.5 mm
**** with T>-10 °C; lower temperatures decrease reducer's efficiency; in case of permanently higher temperatures, the reducer can be used also on more powerful engines
***** variable according to the features of the sequential injection system