For hydrant pit valve connection to the cart or servicer. The orange hose is for air pressure reference; the black hose if for fuel pressure sensing. Both hoses are braid reinforced and are formed together in a continuous bond. Both hoses have 3/8” inside diameter nitrile (Buna N) tubes for fuel resistance, and outer covers of neoprene. They are manufactured exclusively for Gammon Technical Products to our specifications. We are confident that this is the most durable and reliable dual sensing hose available.

Available in cut lengths or reels, with or without fittings.

Manufactured to Gammon Technical Products, Inc. specifications, this hose is superior to any available air Deadman hose on the market. It is suitable for all refueling operations.

The tubes are made out of Buna-N (nitrile rubber) to resist fuel from cross-leakage in the control system. The braided, reinforced tubes have neoprene covers to resist oils that contaminate ramp areas. A special additive is included to give the cover superior resistance to cracking.

Available in cut lengths or reels, with or without fittings.

NOTE: A 4-4 swivel version is also available as GTP-5862.

Nut will rotate to allow tightening but will not swivel when tightened.
Includes ball seat to male NPT nipple.

Molded of durable plastic in two halves to form a sphere. The material is brilliant orange polyethylene. Holes for single or dual hose are custom drilled to fit. The outer diameter is 3”.

These decals are large and provide clear marking for refueling vehicles, fuel farms, and tanks. They are color coded for all fuels.

Pipe Band Kits are made to provide colored bands for marking pipes to API-1542. These kits use 4” wide solid color bands long enough to mark pipes up in 6” in diameter. Forget the paintbrushes, these bands are neat, affordable, and easy!

PIPE IDENTIFICATION AND FLOW DIRECTION DECAL SETS allow for easy marking. They are color coded for all fuels, and are 5×16”. In this set, the identification decal (shown above) comes with arrow decals that can be cut apart with scissors and placed to indicate the direction of flow.

NARROW PIPE DECALS are the same as the pipe decals above, but they are 2×15” and come with the flow arrows attached. Simply use scissors to cut off one of the arrows and turn it to indicate flow direction.

NOZZLE BAND DECALS are used on overwing nozzles to positively identify the fuel type. These band decals are made to the industry standard and measure 7/8” x 10”

EMERGENCY STOP and EMERGENCY FUEL SHUTOFF decals are intended to be used in accordance with the NFPA 407 specification for fixed and vehicle emergency stop controls. The specification calls out 2” high letters and the words “push,” “pull,” or an arrow to indicate operation of the emergency stop switch. As you can see, we have included these instructions on two separate decals. Choose the style you prefer.

This decal has over 50 labels which can be cut with a pair of scissors and used as necessary. The advantage is fourfold: low cost per label, easy installation, long life and durability, and easy replacement when necessary. Even if you only use a quarter of the sheet, you come out ahead. Labels can be cut out and used differently than shown. For example, the “SUMP DAILY” decal can be cut in half and combined with the “BEFORE FUELING” decal to read “SUMP BEFORE FUELING.”

Our 37mm, 0.8μm (micrometer) membranes are produced in exact accordance with ASTM Research Report D1012, under which they have been granted approval for use in methods D2276/IP216 as well as Ip216. We manufacture our own plastic monitors using clear Tenite. Our monitors are made to fit all recognized brands of holders including the Gammon MiniMonitor® Kit and the Millipore® Corp. XX64-037-30.

Refill membranes are packaged with a blue paper separator between each one to aid in separation.

Matched-weight refill membranes are packaged with each pair in a glassine envelope. Each pair is matched in weight within 100μg (micrograms) in a closely controlled atmosphere.

Support pads are 34mm in diameter so as to fit into the recess of the plastic monitor beneath the membrane.

Matched-weight monitors have yellow plastic plugs in the inlet port and a red plug in the outlet. Single membrane monitors, used for color rating tests, have blue plugs in the inlet and red plugs in the outlet.

Quality stainless steel safety wire. Annealed (softened) for easy use. Dispenses neatly from top of 1 lb. box.

When reducing the number of elements, a “dummy” or non-functional element can be used to fill unnecessary element mounts. Our “dummy” elements are carefully machined from high grade aluminum and designed to replace any brand of 2” outside diameter element in any vessel. The seal is a Viton o-ring. Includes an adjustable center “rest” to allow easy installation in vessels with element aligning guides. Needs no additional hardware, works with cover interlocks. Available in standard 10″, 20″, or 30″ sizes, or custom order.

The heart of any deadman is the switch. The switch in this deadman has a built-in rolling diaphragm seal, aluminum body (not glass, rubber, or plastic), and an 8 amp contact rating. It is hermetically sealed, yet is easily replaceable, incorporating “push on” type electrical connections, eliminating troubles with wire nuts or soldering. In addition, the housing is o-ring sealed and has an anodized aluminum switch carrier and cable base fitting. The strain relief is a spiral type with a watertight seal.

Solid, super durable, cold molded, and virtually unbreakable, this handle is made of pure polyurethane. This new Dura-Deadman handle is the strongest and most reliable deadman we offer. It was tested for over half a million cycles, we’ve driven over it with trucks, and it’s been dragged on pavement – all without failure. It features replaceable polyurethane drag bosses for even longer life. Made in USA.

The problem with water detector probes has always been that others are impossible to test periodically without stopping flow, dismantling, or injecting water into the vessel. People are afraid that too much water may be injected. The One-CC Probe solves this simply. First, it has a patented design that only needs 1 ml (1cc) of water for a complete test. Second, it has a built-in water pump, and this pump is only capable of injecting 1 ml (1 cc) of water.

The One-CC™ Water Detector Probe is designed for use in any intrinsically safe electronic control system sensitive enough to detect water by conductivity/resistance. This new probe can therefore replace existing probes in Meggitt/Whittaker equipment if they utilize our replacement controls.

We offer electronic controls in DC, AC, weather tight and explosion proof versions.

• Pressures to 300 psi
• Stainless Steel Construction
• Available with 3/4” NPT or 1 1/2” NPT male connection
• Manual available on our website with test procedure
• US Patent No. 7523645

For those who prefer a smaller and less expensive water probe. All-stainless construction. Push button circuit tester. Can be fitted to a simple valved drain line assembly which allows for true water testing to EI1596. 3/4” NPT or BSPT connections.

Manufactured to Gammon Technical Products, Inc. specifications, this hose is superior to any available air Deadman hose on the market. It is suitable for all refueling operations.

The tubes are made out of Buna-N (nitrile rubber) to resist fuel from cross-leakage in the control system. The braided, reinforced tubes have neoprene covers to resist oils that contaminate ramp areas. A special additive is included to give the cover superior resistance to cracking.

Available in cut lengths or reels, with or without fittings.

When performing filter membrane tests, the difficult part of the task is disposing of the test fuel. The Meter Monitor solves that problem completely. The flush and the test fuel are both returned to the fuel system and are never exposed to air, rain, or other contaminant sources. No buckets, funnels, or fuel spills. The Meter Monitor has two 1/8” NPT connections (connections are 1/4” NPT, inlet and outlet; we install bushings to 1/8” NPT).

Available with gallon or liter calibration.

1. Install a return connector at the inlet of the system pump (GTP-992-4MS).
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2. Using a MiniMonitor® housing that you may already own, insert a plastic monitor (see Bulletin 8).
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3. Install the Meter Monitor between the MiniMonitor® assembly and grounding hose (GTP-1110) which comes with the MiniMonitor® kit.
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4. Turn the MiniMonitor® valve to the stop position.
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5. Start flow in fuel system and read the meter position, for example 000089.23
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6. Connect the MiniMonitor® inlet to the sampling connector and connect the outlet of the hose to the return connector.

• NOTE: The six numerals to the left of the decimal point read whole gallons. The right hand window reads tenths (0.1) of gallons. The dial reads hundredths (0.01) and can be estimated to 0.002. This is a non-reset type meter.

7. Turn the MiniMonitor® valve to the flush position. If you plan to flush one gallon, stop the flushing after one gallon. In this example, stop at a reading of 000090.23.
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8. Turn the MiniMonitor® valve to the test position. Then turn the valve off when the correct number of test gallons has passed. Disconnect the return connection, then the sample connection.

A controlled volume of water is slowly pumped by hand into the filter separator sump. If the emergency shut-down system is operating correctly, fuel flow will stop automatically when the level of water in the sump reaches the sensors. This test is performed while the fuel system is operating.

When the test has been completed, and while there is still pressure in the fuel system, the operator opens a drain valve that directs the liquid from the filter separator sump to the bucket (Model GTP-1787) or to the transparent measuring container (Model GTP-1799). Any fuel that is drained will float on the water. The operator can then confirm that all of the water that was injected into the sump has been removed.

A transparent measuring container at the top has an adjustable level indicator so that the operator can see that all of the water that was pumped into the filter separator sump has been recovered. The water filling port is at the top – see the chained plug. An overflow pipe carries excess fuel to a 5-gallon slop collector on the lower platform. See the drain valve for emptying slop collector.

Constructed with materials that will not rust or corrode in water, this specially-designed apparatus can be stored for long periods with clean water inside without danger of malfunction. Stainless steel and brass are the primary materials. The hoses are pressure rated for 250 psi, five times higher than is expected in a fueling system. Buna-N is used in the hose tube while Hypalon® is the cover material.

Testing of water sump controls has been a controversial subject for many years (refer to GamGram Number 1). Some operators are afraid to pump water into the sump to test the system because they fear “human failure,” resulting in water getting into an aircraft. However, if these systems do not perform correctly, the filter separator cannot do its job of preventing water from getting into the aircraft. In a typical 600 gpm filter separator, the separator elements will be underwater if 5 gallons are collected – any additional water goes into the aircraft.

Some operators rely on the procedure of checking the sump drain for the presence of water after each refueling operation. This is surely a good practice but it is subject to “human error.” Other operators use float testers to check the operation of the control circuit. This good practice checks everything except the float. Periodically, the float must be tested to ensure that it will float on a fuel/water interface.

From the above comments, the conclusion is that periodic injection of water to test the entire system offers the greatest reliability.

1. Place a measured volume of clean water in a bucket or graduated container. Mark the level of water on the container. See note under Step 4, below.
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2. Attach the swivel coupler to the water drain outlet of the filter separator.
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3. Start fuel flow through the system. A refueller truck can be recirculated. A hydrant cart must dispense to tankage.
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4. When normal flow rate and pressure have been established. open the water drain valve and pump water into the filter separator sump.‌

• NOTE: The volume of water required to activate the float or sensor in the filter separator depends on the design of the sump. The volume must be determined by a test for each piece of equipment. To insure against contaminating the flow system, the operator must not inject more than this amount of water.‌
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• If the emergency shut-down system operates properly, fuel flow will stop automatically. If it does not stop fuel flow, the system must be repaired before the aircraft can be refueled.‌

5. To remove water from the sump after the test, open the small toggle valve with the return hose in the water container. Allow some fuel to flow into the container to be sure that all of the injected water has been returned. Close the toggle valve. When the water has settled to the bottom of the container, the water level should be at the original mark as created in Step 1.
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6. Close the water drain valve and remove the swivel coupling.