Tank Adaptor and Vent Hose

Tank Adaptors

Snyder Tank Adaptors are installed in locomotive fuel tank ports. They provide the sealing interface between fuel tanks and the Snyder 1720-DS nozzle.

 

Tank adaptors are typically sold in kits, along with the proper length of vent hose, to fit specific locomotives.


VIEW VIDEO BELOW:

N-2000 TA Adaptors

The standard fuel adaptor for most applications. N2000-TA adaptors have a spring-loaded flapper that closes off the fuel tank opening once fueling is complete and the nozzle is removed.

 

Also available with a secondary seal inside the rim (Model N2000-TA-S)

N2000-TA-EVO Adaptors

EVO adaptors are made specifically for use with GE EVO locomotives. They extend further into the fuel tank and are tapered to increase fuel velocity and reduce back pressure at higher fueling rates.

NOTE: Some GE locomotives require a special mounting assembly for proper tank adaptor installation. Contact Snyder Equipment if you are unsure about the proper kit for your application.

766-AR Tool

766-AR tools are used to remove and install Snyder tank adaptors. The red and black pins allow you to properly orient the tank adapter to keep the flapper hinge between the 11 o’clock and 1 o’clock position.

 

AR tools are available for ¾” and 1” drive sockets.

Vent Hoses

Snyder vent hoses are designed to provide the proper amount of air to operate 1720-DS nozzles. They feature special fittings to maintain a 5/8” ID throughout the hose and fittings.


Vent hoses come in a variety of standard lengths to fit specific locomotives.

 

Why are Snyder vent hoses critical to proper nozzle operation?
Learn More Here

HOW TO ORDER VENT HOSES


How to Order Snyder Vent Hoses

 

Lay the hose out straight and measure the distance between the ends of the fitting threads. Choose the proper length of hose from the table below. Common locomotive configurations are included.

 

Contact Snyder if you need a custom length for your application.

Snyder Part Number Hose Length Typical Locomotive Models
713-SW-18 18” SW1500, MP15DC
713-SW-22 22” Most SD70, SD70M
713-SW-24 24” Some SD70
713-SW-26 26” GP15, GP38/38AC, GP38-2, GP50, GP59, GP60, SD60, SD60I, SD60M, SD80MAC
713-SW-30 30” Most GE locomotives
713-SW-34 34” SW1001
713-SW-38 38” GP40, GP40-2, SD40, SD40-2

Rollover Kits

Rollover kits prevent fuel spills from the vent hose in case of locomotive derailment that cause a rollover. They contain a stainless ball bearing that plugs the vent hose opening. See brochure  below:


Learn More

FAQS

Got questions? We’ve got answers.

  • How do I specify a tank adaptor kit for my application?

    To specify a tank adpator kit, choose the number of adaptors (one side or both sides of the locomotive), the length of vent hose, the style of adaptor (N2000-TA or EVO), and any special requirements (rollover kits, mounting templates, or bushings).  Contact Snyder for any questions involving the proper kit for your application.

  • How do I install a tank adaptor?

    The video on the upper section of this page and this brochure (TAD-BRC-1052) illustrate the proper procedure. Be sure that the flapper hinge is oriented between the 11 o-clock and 1 o’clock position.

  • What is a 766-AR Tool?

    A 766-AR tool is used to install or remove Snyder tank adaptors. They make it easier to provide the proper installation torque and verify that the tank adaptor is properly clocked (with the flapper hinge between the 11 o-clock and 1 o’clock position). See our brochure (TAD-BRC-1052) for details.

  • What is the proper installation torque for a tank adapator?

    Tank adaptors should be torqued to anywheree between 150-450 ft-lb. We recommend staying toward the upper end of the torque range. The range allows the tank adaptor to be clocked properly with minimal adjustment.

  • Why is the tank adaptor clocking position important?

    The flapper hinge on the tank adaptor must be installed between the 11 o-clock and 1 o’clock position. Otherwise, fuel can splash back off of the hinge and into the vent hole in the nozzle, potentially causing the automatic shutoff to fail. Proper tank adaptor clocking also places the vent hose port in the correct position to prevent trapping fuel.

  • How often should tank adaptors be replaced?

    Snyder recommends that tank adaptors be included on a regular replacement program. Adaptors should also be inspected on a regular basis and replaced when the outer face of the adaptor shows excessive wear. Chips and deep scratches in the sealing surface can cause insufficient sealing with the nozzle during fueling operations, potentially causing the automatic shutoff to fail.

  • How do I remove a tank adaptor?

    Install the AR tool and use the same general procedure as installation, applying the wrench in the opposite direction.

  • How do I install a vent hose?

    Install the non-swivel end into the fuel tank. Route the vent hose in a way that prevents dips and areas where the hose can trap fuel, and install the swivel end of the hose into the tank adaptor.

    NOTE: The vent hose must be between the 9 o-clock and 3 o’clock position on the tank adaptor. If it is not, the tank adaptor should be adjusted to the proper position prior to vent hose installation.

  • How often should vent hoses be replaced?

    Snyder recommends replacing vent hoses every two years. During that time, vent hoses should be checked regularly for leaks and proper installation. A degraded vent hose can allow air to seep into the nozzle after the tank is full, causing the automatic shutoff to fail. An improperly installed vent hose can cause air restrictions that cause the nozzle to shut off prematurely.

  • What is a rollover kit?

    Rollover kits prevent fuel spills from the vent hose in case of locomotive derailment that cause a rollover. They contain a stainless ball bearing that plugs the vent hose opening. See the vent hose brochure (TAD-BRC-1012) for further information.

  • What length of vent hose do I need for my application?

    The table in the vent hose section covers vent hoses for common locomotives. If you have a different style of locomotive or want to verify the length, lay the hose out straight and measure the distance between the ends of the fitting threads. Contact Snyder if you have a non-standard length.

    CAUTION: Do not order a longer hose the the locomotive requires. Hoses that are too long can trap fuel in a bend and cause the nozzle to shut off prematurely.

  • Why should I use a Snyder vent hose?

    Snyder vent hoses have special fittings to retain a 5/8” diameter through the entire length of fitting and hose. This provides the correct amount of air that the nozzle requires to operate properly. Using alternate hoses, bushings, street els, or other fittings that reduce the airflow can cause nozzles to shut off prematurely.