Until the 1960s the majority of BR locomotives had provision only for Vacuum Train brakes. From the early 1960s the standard air brake system was introduced, therefore it was common to see locos and rolling stock dual braked (i.e. fitted with both vacuum and air brakes). The use of vacuum brakes on BR was phased out during the 1980s. 

This set of brake pipes is enough for both ends of one Class 20 Locomotive, the UNPAINTED pack includes:-

2 - Air Brake Pipes (BP) - Red
4 - Main Reservoir Air Pipes (MRP) - Yellow
2 - Vacuum Hoses with hose dummy bracket (VAC)
4 - Regulating Control Air Pipes (CA) - White
2 - Multiple Working Jumper Cables (M/W) - Orange
2 - Multiple Working Jumper Receptacles (M/W) - Orange

For dual braked locos, fit the air brake and vacuum brake pipes.
For vacuum only braked locos, fit just the vacuum brake pipes.

Notes:-

• There were many variations between members of the Class 20 fleet in pipe configurations, fitting and placement; therefore it is recommended to refer to photographs of the real thing when fitting these parts.
• All pipes have a 0.7mm peg that can be fitted into a drilled hole in the buffer beam, alternatively the peg can be cut-off and the pipe attached with a small amount of adhesive.
• These parts are delicate and may not be suitable for use with couplings fitted, especially on tighter radius curves.
• The pipes are supplied unpainted, please refer to pictures for typical colours.
• Top-Tip - use a light coat of white primer first, and paint the pipes before removing them from the sprue.

(SET Number 1 for Class 20)