Product Pricing

(You may also use these links to enter the Shopping Cart to place an order or to determine shipping cost)


diesel-fuels.com Product

FPS Controller Upgrade to TSC-7000 Controller


Your Price: $3382.00


diesel-fuels.com Product

TSC-MPAC Alternation Controller - Multi-Point Valve Controller & Software


Your Price: $4612.00


diesel-fuels.com Product

Multi-Point Flowpath - Valve Set - includes 2 Solenoid Controlled Valves and one Foot Valve


Your Price: $1182.00


Multi-Point Flowpath

Intelligent Actuated Valve Fuel
Flow Control System

Generator with basetank

The Multi-Point Flowpath Actuated Valve System allows for fuel movement within each compartment & between compartments to promote the fuel tank cleaning process where obstructions otherwise prevent freedom of flow.

MTC-X Mobile Tank Cleaning System

Click on Graphic
to Enlarge


The typical recirculation process of a cylindrical tank pictured below does not work for a flat, elongated tank with internal baffles and structural supports that restrict fuel flow.

MTC-X Mobile Tank Cleaning System

Click on Graphic
to Enlarge


Multi-Point Valve
Controller Operation

Multi-Point Flow Paths

Click on Graphic
to Enlarge

1. Green shows which supply and return valve is active

2. Red cross-out shows that the valve has a failure

3. Blue shows that the valve is not currently active

4. Grey shows that the valve is not available

5. Valve failure indicator

The Multi-Point Flow Path Package is an add-on option to the AXI FPS SX-F, MX-F, and LX-F Fuel Polishing and Tank Cleaning Systems that are installed on sub-base rectangular steel tanks (often referred to as "belly tanks") typically utilized with diesel fuel powered generator installations configured with the generator mounted on top of the fuel tank. These types of "Belly Tanks" are constructed with double walls, an area for spill containment, and have internal supports at the mounting points where the generator is connected to the tank. These internal supports often act as fuel baffles within the tank, creating compartments with holes in the supports/baffles that allow the diesel fuel to flow between the compartments.

In the process of circulating fuel for the purpose of filtering, conditioning and polishing the fuel contained in a typical cylindrical tank, the process involves placing the suction hose in a port near one end of the tank, typically the low point so as to suction water and sludge that would accumulate at the low end of the tank. The discharge hose would be inserted at the opposite end of the tank, sometimes configured with fittings that would encourage the discharge flow to direct debris and sludge that may be along the bottom of the tank to the low end of the tank to be picked up by the suction hose. See the picture at the left that shows how an AXI Mobil Tank Cleaning (cart mounted) MTC-X System might be set up to perform a tank cleaning and fuel maintenance operation.

A rectangular flat tank (a base tank or "belly" tank) is usually configured as a base to a generator enclosure, an example of which is pictured to the right (the lower portion, the fuel tank, is painted black). The base tank could hold as little as 400 gallons or as much as 4,000 gallons and can measure up to 20 feet long, 6 feet wide and 5 feet high. The internal compartments are formed with structural supports that result in baffles and the compartmentalization presents restrictions to fuel flow if the only access is at either end of the base tank.

Generator with basetank

The Multi-Point Flow Path System provides a means of ensuring optimal fuel quality for restrictive tanks containing multiple internal obstructions. Structural baffles and internal configurations can present issues for fuel path travel, leaving areas susceptible to the collection of water, sediment, and bio-accumulation. By adding multiple suction and discharge points within the tank at locations so that a suction and discharge valve is located in each compartment, new flow paths are created that can push out sludge, particulate, and other forms of contamination from hard to reach sections of the tank. This process, unique to AXI, is the most effective way to ensure optimal fuel quality for fuel tanks constructed with structural components and/or baffles.

The Multi-point Flow Path package works through random valve actuation on both the discharge/supply and return/suction plumbing. Depending on the tank configuration, the Multi-point solenoid valves can be installed throughout the tank, providing multiple, varying flow paths. Multi-point systems can control up to sixteen sets of solenoid valves per tank (32 total). The number of valves will determine the number of possible flow paths.

Multi-Point Flow Paths

Click on Graphic
to Enlarge

FPS Fuel Polishing System Upgraded Controller

The Multi-point Flow Path package necessitates the upgrade of the standard FPS System Controller offered on the FPS SX-F (2.5 GPM), FPS MX-F (4 GPM), or FPS LX-F (10 GPM) System to the TSC 7000 LCD Touchscreen/PLC Controller, which includes Modbus RTU/TC/IP and BACnet Capability. The TSC 7000 series controller is an HMI PLC UL508A controller with more intuitive system setup and monitoring from remote locations. The TSC-7000 Touch Screen Advanced Filtration Controller features the following:

  • Modbus, TCP/IP, LAN and Internet Connectivity

  • E-Mail & SMS Maintenance Alerts

  • Maintenance Alert Log File

  • Multiple Tank Functionality

  • Runtime Totalizer

  • Alarm History

  • On-Screen Help

For safe operation, FPS systems are equipped with an automatic pump shut-down and indicators when filter elements require service. Also included are indicators for high pump vacuum, pressure exits, and leaks.

The appropriate FPS Systems is based on fuel tank capacity. The FPS SX-F is sized for up to 2,000 gallon capacity, the FPS MX-F is sized for up to 6,000 gallon capacity, and the FPS LX-F is sized for up to 15,000 gallon capacity. Order the TSC 7000 Upgrade at the same time as you place your order for the FPS System. If you installation necessitates mounting the FPS System outside, a separate enclosure is available by special order, but many generator enclosures have sufficient space available to mount the FPS System, as well as the TSC-MPAC Alternation Controller inside the generator enclosure.

Multi-Point Alternation Controller

Click on Graphic
to Enlarge

TSC-MPAC Alternation Controller

The Multi-point Alternation Controller (the "MPAC") interacts with the TSC 7000 Controller. The MPAC can control up to sixteen suction valves and sixteen discharge valves. There must be at least two suction and two discharge valves, and the system does not require an equal number of suction and discharge valves. Ideally, one suction and one discharge would be installed in each compartment of the fuel tank. The MPAC can control the sequence of the suction and discharge valves based on a random activation of supply and random return of valves per each time period set by the user. Alternately, the system may be set to operate in pair mode to clean one compartment at a time, with each pair be activated randomly. Non-pair mode allows the system to randomly choose any supply and any return valve for operation for the specified period.

Each valve is monitored for failure and will shut down pump upon failure. Valve failure will alert via alarm message and choose next available valve option. Operator may set override mode to manually activate or deactivate a supply or return valve.

Multi-Point Flowpath
Solenoid Valves

Multi-Point Valves

Click on Graphic
to Enlarge

The TSC Multi-Point Alternation Controller is ordered separately and includes software. If outside mounting of the MPAC is necessary, enclosures are available by special order.

Systems Available for Upgrade to the Multi-Point Flowpath Option

The Multi-point Flowpath Option is available with the
following Diesel Fuel Conditioning & Tank Cleaning Systems:


Compatible FPS Model

Tank Size

FPS Upgraded Controller

Valve Controller

Valve Sets -- Minimum Four Valves (2 sets)

FPS SX-F

500 to 2,000 gallons
(1,900 to 7,600 liters)

TSC 7000 LED Touch Screen Controller

MPAC Controller

2 Solenoid Valves
(1 suction & 1 discharge) & 1 Foot Valve

FPS MX-F

3,000 to 6,000 gallons
(11,400 to 22,700 liters)

TSC 7000 LED Touch Screen Controller

MPAC Controller

2 Solenoid Valves
(1 suction & 1 discharge) & 1 Foot Valve

FPS LX-F

6,000 to 15,000 gallons
(22,700 to 56,800 liters)

TSC 7000 LED Touch Screen Controller

MPAC Controller

2 Solenoid Valves
(1 suction & 1 discharge) & 1 Foot Valve