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← Find a valve socketBritish B15s/17 bayonet base, central and shell contacts
Mechanical data, images and references from the EnryLab archive.
Key specifications
- Reference code
- BRITISH-B15S17
- Contact positions
- 2
Mechanical dimensions
All linear dimensions are in millimetres and describe the valve base and its pins. They are not socket-hole diameters.
The pin circle passes through the pin centres. Pin spacing is the straight-line distance between adjacent centres. ≈ denotes a value calculated from nominal geometry; ± denotes a tolerance, parentheses show limits and ≤ denotes a maximum.
| Dimension | Value (mm) | Detail |
|---|---|---|
| Valve base | ||
| Bayonet-pin diameter | 2.0066 ± 0.1016 | Dimension shown in the drawingView detail |
| Side-locator projection | 1.397 ± 0.127 | Dimension shown in the drawingView detail |
In depth
The British B15s/17 base specified for CV1132 has one central bottom contact and a brass shell forming the second conducting surface. Two electrical surfaces therefore do not mean two separate bottom contacts.
It is a single-contact brass bayonet cap designated BSS 52, comprising the central contact, shell and opposing bayonet pins. VI132 and 10B/6 identify the version. The screen connects to the cap.
This must be distinguished from BA15d with two bottom contacts and the Sylvania bayonet with offset pins. Dimensions from a similarly named modern fitting cannot automatically be transferred to this historical British specification.
The side retaining pins are 2.0066 ±0.1016 mm in diameter and project 1.397 ±0.127 mm. Their mechanical role remains separate from the central bottom contact and shell connection.
CV1132 identifies the complete historical construction. The number of conducting surfaces is not the number of bottom buttons: one central button and a conducting shell form two connections. Modern namesake fitting tolerances are not assigned to this receiver.
Technical drawings
The drawings show orientation and geometry. Links beside the dimensions open the available detail.
Photos and examples
No photos are available for this socket yet.
Related valves in the archive
Total linked designations: 0
No related valves are available for this entry yet.