Disclosed is an air supply system for a whole vehicle, which is intended to solve the technical problem that it is hard to provide a multi-position and controllable air supply solution for an electric vehicle. A first air source device, a control valve and a pipeline constitute a first-type air supply system, the first-type air supply system has multiple air passages, each air passage is respectively provided with an air supply port, and a controller can switch operating states of the control valve, control the opening or closing of the multiple air passages, and achieve controllable air supply effects in multiple positions. A second air source device and several pipelines constitute a second type of air supply system, the second type of air supply system has multiple air passages, each air passage is respectively provided with an air supply port, and a controller can switch operating states of the second air source device, control the opening or closing of the multiple air passages, and achieve controllable air supply effects. The first type of air supply system and the second type of air supply system are rationally configured on the electric vehicle, so as to achieve multi-position and controllable air supply effects.

A collection tank for use in a vacuum operated earth reduction system, the collection tank comprising a closed first end, an open second end defining a tank sealing flange and a body extending between the closed first end and the open second end. An internal chamber defined by the body, the closed first end and the open second end has a door coupled to the open second end and is configured to releasably seal the open second end. An automated door closer is coupled to a center of the door, wherein the automated door closer provides a closing force at the center of the door so that the closing force is equally distributed about a periphery of the door to seal the door against the tank sealing flange.

There is disclosed a service trailer which may be quickly deployed to a site to provide potable water, electricity, lighting and a storage of grey water.

A valve operating device includes a mounting for attachment to a vehicle and an elongate arm, the free end of which is only moveable across the underlying ground. The joints of the arm pivot around vertical axes and the arm is locked into a desired orientation by a brake at each joint. A valve turning machine is at the free end of the arm. The brakes are engaged and released by a control on the valve turning machine.

There is disclosed a service trailer which may be quickly deployed to a site to provide potable water, electricity, lighting and a storage of grey water.

A valve operating device includes a mounting for attachment to a vehicle and an elongate arm, the free end of which is only moveable across the underlying ground. The joints of the arm pivot around vertical axes and the arm is locked into a desired orientation by a brake at each joint. A valve turning machine is at the free end of the arm. The brakes are engaged and released by a control on the valve turning machine.

A collection tank for use in a vacuum operated earth reduction system, the collection tank comprising a closed first end, an open second end defining a tank sealing flange and a body extending between the closed first end and the open second end. An internal chamber defined by the body, the closed first end and the open second end has a door coupled to the open second end and is configured to releasably seal the open second end. An automated door closer is coupled to a center of the door, wherein the automated door closer provides a closing force at the center of the door so that the closing force is equally distributed about a periphery of the door to seal the door against the tank sealing flange.

A collection tank for use in a vacuum operated earth reduction system, the collection tank comprising a closed first end, an open second end defining a tank sealing flange and a body extending between the closed first end and the open second end. An internal chamber defined by the body, the closed first end and the open second end has a door coupled to the open second end and is configured to releasably seal the open second end. An automated door closer is coupled to a center of the door, wherein the automated door closer provides a closing force at the center of the door so that the closing force is equally distributed about a periphery of the door to seal the door against the tank sealing flange.

An industrial truck comprises a support having a plurality of receptacles and a hydraulic fluid tank comprising a plurality of feet engaged with a bottom surface of the hydraulic fluid tank. Each of the plurality of feet is configured to be received by one of the plurality of receptacles.

Provided is a compressed natural gas (CNG) fuel system that can include a frame and at least one container. The frame can include a first side and a second side, with each side being configured to partly define a portion of an interior space. The at least one container can be configured to house or contain CNG and can be engaged to and partly encased by the frame. The at least one container can be partly located within the interior space of at least one of the first side or the second side. The frame assembly can be engaged to a chassis of a vehicle such that the at least one container is located either at least partially underneath a cab of the vehicle or at least partially behind a cab of the vehicle.