Bulletin 181: DEFKit®
DEFKit® – DEF in FSII Test Kit
Simple Field Test to check for Diesel Exhaust Fluid (DEF) in the refueler
Anti-Icing Additive reservoir! (Fuel System Icing Inhibitor/Prist®/DiEGME)
No training, no instrument needed!
Protect aircraft from DEF contamination when refueling with additive injection. Avoid the potentially catastrophic effect of FSII cross contamination with DEF.
For use by mechanics and pilots. Recommended for use after every filling of the additive reservoir. Comes in a pack of 10.
Developed by Emcee Electronics and marketed by Gammon Technical Products, this kit can detect DEF in anti-icing additive down to as low as 2%.
Simply follow these instructions. (The operator must not be blue/green color blind!)
Procedure
CAUTION: Wear protective rubber or plastic gloves. Eye protection is recommended.
- Using the supplied pipette, collect and dispense 2 mL of FSII from the reservoir into the supplied clear vial. (As close as possible to 2 mL using the pipette)
- Open and empty the contents of the powder packet into the vial, replace the stopper.
- Shake the vial vigorously for at least 30 seconds.
- Compare the vial to the color chart included. If blue in color, this is a serious failure, 10% or more of DEF. If you do not see blue, THE TEST IS NOT OVER, proceed to step 5.
- Place the vial on a level surface and wait 5 minutes. If the sample remains cloudy white, top and bottom, it is a pass, if the powder settles to the bottom or turns blue, there is 2-10% DEF and this is a fail. (Note, there is no way to detect DEF in jet fuel, only in the additive itself)
IMPORTANT WARNING! If the test is a failure, the reservoir, the entire additive injection system and refueling equipment downstream of the injection point must be considered contaminated. Aircraft fueled with additive, at least since the reservoir was last filled, should be considered not flight worthy, notified and grounded until it can be determined that they are safe to fly. If already in flight, the pilot should be notified and told to land safely as soon as possible. Aircraft previously fueled must also be considered to be at risk until such time that you are SURE AS TO WHEN the DEF got into the reservoir.
The aircraft manufacturer must be consulted on making the aircraft flight worthy. DEF is not easily flushed from fuel systems and no complete and proper method is known at this time for its removal, although hot water has been used to clean up spills. Unsafe levels of residue may still remain.
Made in USA by Emcee Electronics, Venice, Florida
Shelf life: 18 months from date of manufacture
Bulletin 180: Mini Gammon Gauge
Mini Gammon Gauge Differential Pressure Indicator
The First High-Quality, Inexpensive Direct Reading Differential Pressure Indicator
In 1966, Gammon Technical Products introduced the Gammon Gauge, which quickly became the world’s #1 aviation fuel filter differential pressure gauge. In 2017, we are pleased to introduce the new, patented, smaller gauge, made to the same unparalleled quality standards.
Calibration is simple and does not require a gauge laboratory. Use GTP-2305 or any three-way valve. Our test procedure is accepted by the USAF, Army, Navy, and all major oil companies and airlines in the world as all you need to do to check the accuracy of the Gammon type DP indicator.
How to Order
Mini Gammon Gauge Control Systems
Protect Against Filter Element Bursting
Add a Differential Pressure Switch to the Gammon Gauge
Sound Alarm – Stop Flow – Turn on Second Filter
Normally Open or Normally Closed, Fail Safe
If differential pressure suddenly increases or a facility is operated without personnel monitoring the differential pressure, filter element failure can occur. This new switch is unique. It adds differential pressure control at a low cost using a non-powered proximity switch. This simple double-sealed switch is ideal for use in PLC (miniature computer) and relay controlled systems. The connection box is rated NEMA4X.
Control operations are also available if you don’t plan to use an external control. We have weather-tight and explosion-proof versions.
We strongly recommend a three-way test valve for properly testing the Mini Gammon Gauge and Proximity Switch and/or system.
Any Mini Gammon Gauge can be converted to include the new proximity switch.
Note: To meet IATA JIG Bulletin 58, order the “BKS” option for key switch reset and test functions. The ATA-103 does not require this. For vehicle mounting, we recommend the weather-tight housing.
How to Order
Example:
GTP-9980B-P-RH-12-B-0 is a differential pressure gauge with a normally closed switch as follows: mini gauge with test valve, 30psi scale, switch on right side, 12 VDC, enclosure is weather tight which includes light and push to test feature, no solenoid valve, and low temperature o-rings.
GTP-9980B-P-RH-12-BKS-0 is the same as above except the enclosure has two key lock switches for test and reset as per IATA JIG Bulletin 58.
Notes:
- GTP-9980 has a normally open switch. The switch closes upon high differential pressure. If the cable to the controller is cut, high differential would never be detected.
- GTP-9980B has a normally closed switch. The switch opens upon high differential pressure. If the cable to the controller is cut, the system would go into alarm notifying the operator that something is wrong with the system.
- If a system is purchased without the controller (no enclosure), both types of switches are still available. When a complete system is ordered with an enclosure, it is our policy to provide a GTP-9980B fail safe system unless otherwise requested. The difference is in the internal wiring and components in the controller.
See also:
Bulletin 179: Refueler Vehicle Flow Accessories
Defueling Eductor
TL-8856
When defueling aircraft, the safest method is to use an eductor. This device generates flow and a mild vacuum. This allows the truck to defuel aircraft at a controlled rate and a controlled vacuum, to protect the aircraft. Excess vacuum can cause damage to the aircraft fuel tanks, which are often part of the wing. The primary adjustment is made by controlling the pump
speed/flow rate on the refueler.
The TL-8856 eductor is designed to match or exceed the performance of other eductors on the market and do so with one less gasket and a lower price. Our eductor is rated up to 280 gpm. In addition, it is cast of 356-T6 aluminum, 100% made in the USA.
3” x 3” x 2” IPS (Victaulic)
Recovery Tank Eductor
GTP-486-5
Recently redesigned for even greater performance, this eductor is designed for recovering clean fuel from an expansion/recovery tank on a refueling vehicle. For optimal performance, the suction line should be 1/2” pipe or tubing at a minimum and the suction line ball valve should be 3/8” full port or 1/2” standard port. 100% made in the USA, aircraft grade aluminum.
3/4 NPT x 1 NPT x 3/8 NPT
Venturis
To refuel aircraft at the highest possible flow rate, a refueling vehicle must control the pressure accurately at the nozzle to approximately 45 psi. Because of pressure drop in the hose reel and hose, a system flowing at 300 gpm with 45 psi at the nozzle has to have a much higher pressure at the host reel inlet. But pressure drop changes with flow rate. For this reason, Venturis are used to automatically “compensate” for this pressure drop.
As velocity increases, the small opening at the center of the venturi has higher and higher velocity. As the inventor, Giovanni Venturi, discovered over 200 years ago, the pressure decreases as velocity increases. Using careful mathematics, a Venturi can create a “false signal” that can be tuned to match the actual nozzle pressure (or it may be higher in some cases, on the “safe side” with actual nozzle pressure lower). See our GamGram #32.
The primary venturi we sell is the 3” x 3” GTP-8769 venturi, made with either flanged (TTMA) or Victaulic connections. It is the highest performance 3” venturi we know of, specifically tuned for 300 gpm. We also make the GTP-8646-B 4” x 3” Venturi with Victaulic connections only.
All Gammon Technical Products venturis are cast and machined in the USA and are 356 T6 aluminum, impregnated against leakage. Rated for up to 150 psi system pressure. Needle valve not included.
| Part No. | End Style | Inlet ‘A’ | Outlet ‘B’ | Length ‘C’ |
|---|---|---|---|---|
| GTP-8769 | Victaulic | 3″ | 3″ | 9.75″ |
| GTP-8769-3 | TTMA Flanged | 3″ | 3″ | 11″ |
| GTP-8846-B | Victaulic | 4″ | 3″ | 14.1″ |
| GTP-9077-2 | Victaulic | 4″ | 4″ | 14.1″ |
See also:
Bulletin 175: Auto-Air® High Performance Air Eliminator
Introducing a breakthrough air eliminator design. The Auto-Air® Air Eliminator utilizes a unique “rocker” seal which allows 4 times the air relief of similar sized air eliminators.
- Jet fuel, aviation gasoline, diesel, or gasoline rated (0.7 to 1.1 SG density)
- Full 1/8” (6.4mm) relief orifice
- 160 psi air relief (fully open)
- 300 psi system pressure
- 1200 psi stricture pressure
- 3/4” NPT, BSPP, or ANSI flanged
- Made in U.S.A.
- Fully rebuildable, Viton sealed
- 100% stainless steel construction
Filter vessels need to exhaust (eliminate) any incidental air that may get into the fuel system. Our Auto-Air® air eliminator is a small, compact, high-performance unit which is also strong and rebuildable.
In the past, simple air eliminators have either under-performed, tended to leak, or were just too weak for hard service. The Auto-Air® is the answer. It relieves 24 scfm at 150 psi.
GTP-9363-A
See also:
Bulletin 173: SkyHawk Overwing Nozzle
Safely Recirculate Overwing Hoses with the SkyHawk Recirculation Adapter
In the past, recirculation of your overwing nozzles required climbing on top of the truck. Aside from the potential for the operator falling, you can also damage the nozzle by dropping it, and in addition, splashing fuel into the tank is a static fire hazard.
The SkyHawk Recirculation Adapter (patent pending) solves this problem. Simply disconnect the standard spout and connect the JM-9647 adapter to the SkyHawk nozzle. Then connect it directly to the bottom load adapter on the truck.
Squeeze the trigger and recirculate at up to 100 gpm. The only downside is that upon disconnection, you need to catch about 3 oz of fuel from the adapter. Dual interlocks help prevent accidental disconnection.
Replacing your bottom load dust cap? We include an inlet dust cap and lanyards so you can replace the existing (or missing) bottom load dust cap with the SkyHawk Recirculation Adapter, making it a high quality solid aluminum dust cap as well as a recirculation adapter!
Uses a genuine Meggitt (Whittaker) F117 nose seal for excellent sealing integrity. (P/N 2713509)
Constructed of 100% aviation grade aluminum with S/S trim and, of course, manufactured by GTP in the USA.
NOTE: This does not make the SkyHawk overwing nozzle into an underwing nozzle, it is meant only for recirculation purposes.
Bulletin 171: Gammon DP Guard
Simple and Inexpensive
Stops Flow if Differential Pressure on a Filter Vessel Exceeds a Safe Level
For both powered and unpowered carts and trucks
The hydraulic cylinder moves based on the differential pressure sensed across the filter. When differential pressure exceeds the set point, the cylinder closes a toggle valve, stopping flow to a hydraulic or pneumatic deadman or stopping flow to a pilot valve.
Connects to the existing differential pressure gauge lines and existing hydraulic deadman circuit.
No power needed, 2 way hydraulic and 3-way compressed air versions available.
Adjustable set point. It can be simply tested using a 3-way valve (GTP-2305V) or better yet, connect directly to Gammon Gauge with a Push Button Tester. (Special lower flange on Gammon Gauge needed).
Lockable cover, simple, heavy duty design.
Aluminum and Stainless Steel construction.
How to Order
GTP-9425-H
hydraulic DP Guard
GTP-9425-U
air operated DP Guard
