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March 2005: Source Fluid Power F24 MFC featured in Design News.
Hybrid valve design offers lower cost, longer life
N E W P R O D U C T U P D A T E S
Source Fluid Power continually strives to update our current products and develop new ones. In doing so, we often are able to provide new products and accessories that complement our current products. Detailed examples of our newest offerings are listed below.
Our new F-20 series Motorized Flow Control (MFC) more than doubles the flow capacity of our largest valve — up to 120 GPM @ 100 PSI differential. This valve is ideal for controlling the output of high flow load sense pumps, or any application requiring remote electric control of high flow rates. Besides all the speeds and configurations available in our present MFC line, the F-20 is available with a new, brush-less motor, allowing millions of cycles of operation, and increasing cycle speed to under a second full open to full closed or vice versa.
Experience for yourself the increased performance capability of the F-20. Call today for more information on this or any of Source Fluid Power's standard or custom-engineered products. Click here for the F20 Product Sheet (PDF).
A proportional divider valve now available from Source Fluid Power allows operators to change the split ratio externally without changing internal components. This new valve, the SFP 25254, will divide input flow anywhere from a 50/50 to an 80/20 split.
Although the SFP 25254 is suitable for any valve-type application requiring an adjustable divider, a common use is to divert flow to a hydraulic motor driving a liquid pump that delivers pre-wetting solution on salt and sand spreaders. The valve provides oil to the motor in proportion to the rate of application of salt and sand. The valve takes the return oil from a conveyor that regulates the amount of sand and salt applied. It then splits off a portion of the oil to a hydraulic motor that drives the pre-wet solution pump. Maximum operating pressure is 3000 psi at flows up to 15 gal/min (57 L/min).
The ratio can be adjusted on the fly manually, or remotely via Source's Motorized Flow Control (MFC). The MFC is direct acting and stable at flow rates of over 50 gal/min (189 L/min) with power consumption of 1.5 W or less while retaining settings if power is interrupted.
Source can also build the proportional divider valve into a customized package for specialty applications. With modifications, the valve can be supplied as a combiner.
The SFP 25370 package includes a pair of motorized flow-control valves and priority divider-type compensation elements. It provides electrical remote control of two hydraulic functions and accommodates either 10- or 16-size valves for systems flows to 50 gpm. Maximum operating pressure: 3000 psi. Options: five flow ranges, four operating speeds, position feedback, solenoid dump and system relief.
Feedback option for the MFC is now available! We have tested the re-designed circuit board to over a half-million cycles, and it is still going. Our first production run of 50 pieces is built and shipped. To order, add letter code FB after the part number (i.e. F101507FB) Price adder for this option is $40.00 list. Normal discounts per schedule A apply.
Readout Gauges, P/N SFP25416 are now available from stock. This gauge is a standard fuel type unit with Source logo. It reads from 0 to 100%. List price for the gauge is $38.00. Again, normal Schedule A discounts apply.
We have completed prototype testing of our new Valve Controller P/N SFP 25417, and have placed a production order. Units should be available by mid February 2001. When used in conjunction with an MFC with feedback, this controller allows the operator to use a command pot to dial in a desired valve opening and have the MFC go to that position and hold. It can be used in conjunction with an on/off switch that drives the valve shut (or open, depending on how it is wired) when the switch is off and then back to a preset position when the switch is on. The controller is a potted module with separate command pot (shipped loose). List price will probably be $185.00 with standard schedule A discounts applying. This makes the 100 piece OEM price $79.55. We would appreciate your comments on pricing or any other issue concerning this product.
Preliminary testing on the pressure compensated version of the F10 cartridge has been very successful. We have shipped 5 prototypes and are waiting for feedback from the customer. Once we know the valve is working well for them, we will offer it to the general market. This valve is a two port pressure compensated cartridge. It fits the standard 10-2 cavity. Flow is from nose to side only. Flow range is from 0.2 to 6 GPM with a compensating pressure of 150 - 200 PSI. Our next project will be a 3-port version to fit the 16-3 cavity. This valve would function as a priority divider type valve with excess oil bypassed to tank. It could also function as a 2-port valve by simply blocking the bypass port.
If you need a faster version of the MFC, one is now available. We just received a supply of motors that operate the valve full open to full shut (or vice-versa) in 1.75 seconds @ 12VDC. We have life tested to 1,000,000 cycles @ 24 VDC. Part number is F10**02 or F16**02.
In the area of custom products, we are now in production of a self-contained electro- hydraulic linear actuator. SFP 25399 is a custom package incorporating a DC motor, pump, valves, and cylinder all in one unit. This unit is a custom package designed to open and close swinging style gates at gated communities and other secured areas. Now that we have the details worked out for combining all these components into a single package, it wouldn't be difficult to develop a similar package to fit your customer's needs. Pump size, cylinder size, and circuitry can all be changed. There is no reason the concept couldn't even be applied with a rotary actuator or HTLS motor. Applications that might be good candidates are process valve operators, trailer tilt systems, or custom lifts.
Don't forget the Source standard bar manifolds for use with D-03, D-05, and D-08 directional valves. These are usually in stock, and we can supply with various options, including Load Sense checks to facilitate use with load sense pumps.
Speaking of Load Sense systems, remember that the MFC is the ideal valve for providing electric remote flow control of a flow compensated pump. Since the limiting factor in the pressure rating is the differential and not the static pressure (we have proof tested the cartridge to 23,000 PSI), you can use it in LS circuits to 5000 PSI or higher. Depending on the flow compensator pressure setting, you can control flows of 70 GPM or more. At a margin setting of 250 PSI, for example, you should be able to control over 70 GPM, and since this is a direct acting device, it is very stable. The best part is that you can get all this control for around $150.00 OEM.
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