Glossary › P
- Parking brake
Ratchet or hand operated spindle brake used to hold a trailer at rest.
- Partition walls
Used to create different temperature zones in refrigerated bodywork.
- Pick up height
This is the distance from the ground to the underside of the corner castings of a swap body.
- Plywood internal lining
Usually used for foodstuff or furniture transport to protect the goods and the side walls.
- Press-tipping semi-trailer
Used to transport refuse. The body is split in the middle, the rear part tips and the front part has a hydraulic cylinder and press which presses the load toward the rear until the rear half is full and then tipped out.
- Pressure control valve
Valve that prevents excessive pressure building in a braking system or in the hydraulic system of a tipper.
- Pressure dome aperture
Lockable tank filling aperture on pressure containers.
- Pressure module
Records the braking pressure in an electronic brake system.
- Pressure plates
Rubber covered panels in inloaders used hydraulically or mechanically to secure cargo e.g. plate glass.
- Pressure tank
Containers that transport goods under pressure or use pressure to discharge, usually at 2 bar.
- Prime mover
Another term for prime mover.
- Prop stand
Used on low loaders and market trailers to stabilise the body when being loaded or stationary. Weight is taken off the suspension.
- Prop stand
Folding or pivoting support legs which are used to stabilise a trailer when stationary e.g. caravans or catering vehicles.
- Protective grill
Internal protective grill on a refrigeration unit evaporator.