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Siemens Combustion Controls

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Combustion control gas valves, control motors, flame safeguards, electronic burner management systems, temperature and leak test controls approved for use world wide. Siemens combustion products feature modular construction for single source simplicity. Component compatibility assures low installation and operating costs plus dependable, safe operation. Rigorous quality testing optimizes reliability and process performance.

Differential Pressure Feedwater Control

Siemens Differential Pressure Feedwater Control

SCC Differential Pressure Feedwater Control (DPFC) is an integrated system based on a highly accurate Differential Pressure (DP) transducer(s) coupled to a RWF40 universal controller. The RWF40 controls the Feedwater valve actuator directly (electro-hydraulic actuator), or through an I to P converter (Pneumatic valve actuator). Many different actuators and feedwater valves are offered to accommodate different feedwater pressures and flows.

The DPFC may be used on Firetube and Watertube Boilers, as well as Deaerators. It can be set up as a single or a dual element level control, depending upon which sensors are connected. ModBus communications are also available via the RWF40, allowing the DPFC to interface with a building management system or a HMI (touch screen). These features make the DPFC extremely flexible, and ideally suited for use on most steam boilers and Deareators.

Differential Pressure Feedwater Control

 

Electric Actuators

SKD62UA        24 Vac, 20 mm stroke with zero span adjustment, reversible 0-10 Vdc or 4-20 mA control
SKC62UA        24 Vac with 40 mm stroke with zero span adjustment, reversible 0-10 Vdc or 4-20 mA control
SKB62UA        24 Vac with 20 mm stroke with zero span adjustment, reversible 0-10 Vdc or 4-20 mA control

Accessories for SK.. Actuators

599-10065        Weathershield SKB/C
599-10071        Weathershield SKD
ASC9.3        Auxiliary switch, SPDT.  Indicates zero stroke position.
ASC1.6        Auxiliary switch, SPDT.  Indicates zero stroke position.
TS-TR-24VAC-20VA        24 VAC transformer (20VA) for SKD feedwater actuators
TS-TR-24VAC-40VA        24 VAC transformer (40VA) for SKB/C/D feedwater actuators

DP Level Sensor

7MF4433-NODISP        Sitrans P DSIII differential pressure transmitter, 0.4″ to 100″ wc. 4-20 mA output
7MF4433-DISP        Sitrans P DSIII differential pressure transmitter, 0.4″ to 100″ wc. 4-20 mA output, Display
7MF4433-DISPR2        Sitrans P DSIII differential pressure transmitter, 0.4″ to 250″ wc. 4-20 mA output, Display

Mounting Accessories

A6X30004061        3-valve manifold set mounting hardware for Sitrans DP Level Sensors,
7MF4997-1AF        Steel Mounting Bracket for differential pressure transmitter
7MF4997-1BE        Replacement Die Cast cover with window for Diff. Pressure Transmitter
15965-659        Flanges/hardware for 3 valve manifold
A6X30029396        10 replacement Teflon O-ring for DP Transmitter
7MF9411-5DB        DP accessory kit, 2 Teflon O-rings and 4 bolts
TS-TR-24VAC-40VA        24 VAC transformer (40VA) for SKB/C/D feedwater actuators

Valve Bodies        Normally Closed Threaded

599-03072        1/2″
599-03073        1/2″
599-03074        1/2″
599-03075        1/2″
599-03076        3/4″
599-03077        1″
599-03078        1-1/4″
599-03079        1-1/2″
599-03080        2″

Valve Bodies        Normally Closed Flanged

599-06130        2-1/2″
599-06131        3″

Valve Bodies        Normally Open Threaded

599-03057        1/2″
599-03058        3/4″
599-03059        1″
599-03060        1-1/4″
599-03061        1-1/2″
599-03062        2″

Valve Bodies        Normally Open Flanged

599-06120        2-1/2″
599-06121        3″
599-06122        4″
599-06123        5″
599-06124        6″

Pneumatic Accessories

545-208        Electronic to Pneumatic Transducer (4-20 mA to 3-15 psig)
545-113        Electronic to Pneumatic Transducer