This set of 4 valves is intended for use in a 4-hole full-toroidal tank. The valves are designed to work at 52° down from vertical. Each set is specific to the depth of the full-toroidal tank. So, be sure to select the correct size from the drop-down list.
The outlet pipe is fitted using a large flare nut or a poly pipe to 4-hole outlet fitting, for either 6mm or 8mm pipe. These are sold separately.
If the tank is fitted inside the vehicle it must have a gas-tight box and vent hoses to purge any leaked gas. These items are sold separately.