Petrol taps & pipes

All A, B, C and M pre unit models have a 3/8 BSP thread in the tank for the tap. Initially the tank end of the tap was without a filter and had a 1/8 BSP thread that screwed into an adaptor with a 3/8 BSP male thread and a filter. It was this that screwed into the tank. Later taps were fitted with a filter and had a 3/8 BSP thread and so dispensed with the adaptor.

Most taps had a 1/4 BSP threaded outlet and originally used a rigid copper pipe with soldered fittings. For a few years the A group used a spigot on the lower end of the tap and a ‘banjo’ fitting on the petrol pipe.

Where a tap, at the time of writing, is not available a suitable alternative is suggested, however as new items are being discovered all the time it would be wise to check the price list for current availability.

The sizes given with the taps listed are British Standard Pipe or BSP thread sizes, tank end is given first then the outlet. A tap with a 1/8 BSP thread will need the 27-8436 adaptor with filter or A16-96, a tap with a 1/4 BSP thread will need the A16-90 adaptor. BSP thread sizes are confusing because the size relates to the size of the pipe not the thread. Nominal thread sizes are as follows (male then female):- 1/8 BSP .375, 0.35; 3/16 BSP 0.425, 0.375; 1/4 BSP 0.515, 0.468; 3/8 BSP 0.650, 0.609. All sizes of threads are 19 TPI except the 1/8, which is 28.

This table shows the more popular applications.

Tap-pipe

Tank

Type

Filter

Main

Reserve

Part no

Popular applications

3/16 1/8 Flat

N

Y

27-8552 M 1940-47
3/16 1/8 Taper

N

Y

65-8171 A10 RR/SR 1953-63
3/16 3/8 Plunger

Y

Y

5050-54A 1953-58 SQ4
1/4 3/8 Flat

Y

Y

Y

27-8553 B/M 1938-53
1/4 1/4 Flat

Y

Y

Y

27-8553A
1/4 1/4 BAP

Y

Y

5050-87 Modern
1/4 1/4 BAP

Y

Y

5050-88 Modern
1/4 3/8 Plunger

Y

Y

68-8024 Back entry
1/4 1/4 Plunger

Y

Y

T2191 Arrow
1/4 3/8 Plunger

Y

Y

Y

5050-30 Ariel except 53-58 SQ
1/4 3/8 Plunger

Y

Y

67-8092 A plun 1955-57
1/4 3/8

65-8216 B/M 1954-60 not available, use 67-8092
1/4 1/8 Flat

N

Y

27-8552A
1/4 1/4 Taper

Y

Y

65-8171A
1/4 1/8 Taper

N

Y

5050-03
1/4 1/4 Lever

Y

Y

83-2800 OIF
1/4 1/4 Lever

Y

Y

83-2801 OIF
Banjo 3/8 Plunger

Y

Y

42-8075 A 1955-62 not RR/SR
Push on 1/8 Plunger

N

Y

29-7764A
Push on 3/8 Plunger

Y

Y

29-7764 C 1954-58

Pipe size

Inside thread

Outside thread

Adapters

Decimal Fraction Mill Decimal Fraction Mill

Tap

Tank

Part no

1/8 .350 (7/16) 8.9 .375 (3/8) 9.5 1/8 3/8 A16-96
3/16 .375 (3/8) 9.5 .425 (27/64) 10.8 ¼ 3/8 A16-90
¼ .468 (15/32) 11.9 .515 (33/64) 13.1 1/8 3/8 27-8436 c/w filter
3/8 .609 (39/64) 15.5 .650 (21/32) 16.5

Descriptive List of Available Taps and Fittings  Applications are listed below under model headings

Part Number

Description

27-8552

1/8 x 3/16 petrol tap, flat slide, no filter

27-8553

3/8 x ¼ petrol tap, flat slide with reserve and filter

29-7764A

1/8 x push on spigot petrol tap, single plunger

65-8171

1/8 x 3/16 petrol tap, lever with taper seat, no filter

27-8553A

¼ x ¼ petrol tap, flat slide with reserve and filter,

5050-87

¼ x ¼ petrol tap, modern BAP lever type, reserve only with filter

5050-88

¼ x ¼ petrol tap, modern BAP lever type, main only with filter
BAP type taps are a modern non-leaking tap with 1/4 BSP threads top and bottom, so usually a 1/4 to 3/8 BSP adapter will be required. A nice feature is a locking nut so that the tap can be lined up where it is convenient to use rather than having the lever stuck round the back. The down side is that they do not look anything like the original.

68-8024

¼ x ¼ petrol tap, single plunger, back entry, with filter

T2191

¼ x ¼ petrol tap, single plunger with filter (T2094 is the same but with extension for the Leader)

5050-54A

3/8 x 7/16 petrol tap, single plunger & filter

29-7764

3/8 x push on spigot petrol tap, single plunger

42-8075

3/8 x banjo petrol tap, single plunger with filter

67-8092

3/8 x ¼ petrol tap, single plunger with filter

27-8436

Adaptor with filter, 1/8 BSP taps in tanks with 3/8 BSP outlets.

A16-90

Adaptor, to use 1/4 BSP taps in tanks with 3/8 BSP outlets.

A16-96

Adaptor, to use 1/8 BSP taps in tanks with 3/8 BSP outlets.

A10-90

Tap plunger & cork, straight pull

A11-90

Tap plunger & cork, pull and turn to lock

A49-91

Tap plunger retaining screw

A49-92

Tap plunger retaining screw shake proof washer

A49-97

Tap cork for flat slide taps

A49-98

Tap cork for plunger taps

5899-30

Fibre washer for 1/8 BSP (tap to adaptor or banjo nut to banjo)

2153-37

Fibre washer for 1/4 BSP (tap to adaptor)

65-8218

Fibre washer for 3/8 BSP (adaptor or tap to tank)

S4-4

Oil seal washer for 1/8 BSP (tap to adaptor or banjo nut to banjo) Steel washer with integral rubber seal, much superior to fibre washers.

S4-6

Oil seal washer for 1/4 BSP (tap to adaptor)

S4-8

Oil seal washer for 3/8 BSP (adaptor or tap to tank)

5899-30

Fibre washer for banjo to tap fitting (1 per banjo)

67-8060

Banjo nut (1/8 BSP dome nut)

14/026

Spigot for petrol tap, ¼ bore pipe

14/026A

Spigot for petrol tap, 3/16 bore pipe

14/042

Petrol tap union or gland nut, 1/4 BSP

14/042A

Petrol tap union or gland nut, 3/16 BSP

OI-PEC

Tank sealer, for lining rusty or pin holed tanks, sufficient for 4.5 galls, 100% ethanol proof.

OI-PEA

Tank sealant remover, get rid of the old sealant

OI-PEK

This is cleaner to make the surface of the tank ready to key to the new sealant.

A33-91

Plastic 1/4″ bore petrol pipe

A33-92

Petrol pipe, black Neoprene. Wonderfully flexible, long lasting and practical but not very original

A34-91

‘T’ piece for flexible petrol pipe

Part No

Description

Per

Models

Years

Pre-unit A Group The change of petrol tap for A7 models in 1950 took place at plunger frame ZA7S 7034 and rigid frame ZA7 4488. All A10 models had 67-8057 from the start.

27-8552

Petrol tap, flat slide, 1/8 x 3/16 2 A7 1947-49

27-8553

Petrol tap, flat slide & reserve, 3/8 x ¼ 2 A7ST 1949-50

67-8057

Petrol tap, flat slide, 1/8 x banjo 2 A 1950

67-8092

Petrol tap, single plunger, 3/8 x ¼ 2 A (not A10SF) 1951-54

67-8087

Petrol pipe assembly with black pipe (not armoured) 1 A 1954

67-8092

Petrol tap, single plunger, 3/8 x ¼ 2 A Plun 1955-57

42-8070

Petrol pipe assembly 1 A S/arm not SR 1958-59 1955-62

42-8075

Petrol tap, single plunger, 3/8 x banjo 2 A S’arm not RR/SR 1955-62

42-8075A

Banjo for 42-8075 petrol tap 2 A S’arm not RR/SR 1955-62

67-8060

Dome nut for banjo taps 2

65-8218

Fibre washer, upper for banjo taps 2

5184-37

Fibre washer, lower for banjo taps 2

65-8171

Petrol tap, lever with taper seat, 1/8 x 3/16 2 A10 SF/RR/SR 1953-63

42-8070

Petrol pipe 1 A S’arm (not SR 1958-59)

B Group

27-8553

Petrol tap, flat slide with reserve, 3/8 x ¼ 1 B 1946-53

65-8216

Petrol tap, single plunger with reserve, 3/8 x ¼ 1 B31/3 1954-60

65-8171

Petrol tap, lever with taper seat, 1/8 x 3/16 2 B32/4 1954-60

42-8076

Petrol pipe 1 B Swinging arm models 1954-60

C Group

27-8552

Petrol tap, flat slide, 1/8 x 3/16 1 C 1946-49

67-8092

Petrol tap, single plunger, 3/8 x 1/4 1 C 1950-53

29-7764

Petrol tap, single plunger, 3/8 originally with pipe 1 C11/12 1954-58

27-7765

Petrol tap, single plunger, 3/8 originally with pipe 1 C10 1954-57

29-7765

Petrol tap, single plunger, 3/8 1 C10L

M Group

27-8552

Petrol tap, flat slide, 1/8 x 3/16 2 M 1940-47

27-8553

Petrol tap, flat slide with reserve, 3/8 x ¼ 1 M (not 1940-47) 1938-53

65-8216

Petrol tap, single plunger with reserve, 3/8 x ¼ 1 M 1954-60

27-8552

Petrol tap, flat slide, 1/8 x 3/16 2 M AA model 1947-63

27-8443

Petrol tap adapter with filter 1 M 1938-53

33-8255

 Balance pipe 3 ½” wide but see next line 1 M

5075-WIDE

 Balance pipe 4 3/8” 1 M

66-8195

 Petrol pipe, rigid copper as original 1 M20/21 1940-46

No products were found matching your selection, but we still might be able to help! Give us a call on 01986 894798 or email spares@draganfly.co.uk