Typical applications l Starting air/gas valve l Vented fuel gas valve l Control valve Model 4418F Key features and benefits l Vent port eliminates need for separate bleed valve - reduced system cost l Optional open/close indication switch - simpler system set up and diagnostics l Fully adjustable for optimized system operation 4418F High Pressure Control Valve High Pressure Control Valve www.amot.com Datasheet_4418F_High_Pressure_Control_Valve_0612_Rev7 Overview The 4418F has been designed specifically for use as an air start valve for diesel engines or as a fuel shut-off valve for gas turbine appli- cations. Its durable, high quality construction and compact size make it ideal for use with gas turbines in the 0 to 15 MW size range. Accreditations l PED Suitable for Group 1 & 2 liquids (ensure materials are compatible) l ATEX 11 2 G X l Complies with all relevant EU directives
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Typical applications
lStarting air/gas valve
lVented fuel gas valve
lControl valve
Model 4418F
Key features and benefits
l Vent port eliminates need for separate bleed valve - reduced system cost
lOptional open/close indication switch - simpler system set up and diagnostics
The 4418F has been designed specifically for use as an air start valve for diesel engines or as a fuel shut-off valve for gas turbine appli-cations. Its durable, high quality construction and compact size make it ideal for use with gas turbines in the 0 to 15 MW size range.
Accreditations
lPED Suitable for Group 1 & 2 liquids (ensure materials are compatible)
Fuel valve for turbine or engine Starting air for turbine or engine
Fuel Out to Engine To Turbine
Fuel In Starting Air
Vent
AMOT 4418 AMOT 4418
Pilot Pilot
Vent Vent
Energise to open fuel valve
3 Way Solenoid Valve+
-1 3
2
Vent
PneumaticSignal
Pneumatic signal or manual pull to start turbine
Operation
2-Way Version
When pressure is applied to the PILOT port, the main ports (IN and OUT) are opened to allow flow through the valve. When the pilot pressure is released, a spring closes the main ports.
2-Way Vented Version
When Pilot Pressure is applied to the PILOT port, IN Port is open to the OUT Port; the VENT Port is closed. When pilot pressure is removed, the IN
Port closes while the VENT Port opens to the OUT Port, relieving pressure within the valve and down stream piping.
When used on a fuel gas system, the fuel intake manifold is vented causing quick shutdown of the engine.
PED category IV, ATEX II 2 G X, 2 way vented, normally closed
PED category IV, ATEX II 2 G X, 2 way, normally closed
2-way vented, normally closed (unapproved)
2-way, normally closed (unapproved)
Pilot pressure
Internal materials & approvals
Proximity switch options
Customer special requirements
CSA Class I, Div 1, Groups C and D
UL Class I, Div 1, Groups C and D
PED category IV and ATEX II 2G X(2)
Customer special code assigned
Code Description
Customer special option codes
Standard product
Valve size and type
Pilot options(3)
Pilot pressure
30 to 150 PSIG
Valve model & revision
Connections
Pilot options
How to order Use the table below to select the unique specification of your 4418F high pressure control valve:
(1) Do not use aluminum above 240 psig (16.55 bar) @ 200°F (94°C). (2) Not available with aluminum spool (3) All accessories include SS tubing & fittings mounted on valve