Water Key Spring - Medium - Cornet
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
29mm - Leg length from coil centre
16mm - Connecting leg length from coil centre
3.8mm - Internal coil diameter
7mm - Width
Generic internal type water key spring for Trumpet or Cornet
Water Key Spring - Medium Large - Cornet
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
26mm - Leg length from coil centre
15mm - Connecting leg length from coil centre
4.2mm - Internal coil diameter
8mm - Width
Generic external type water key spring for Trumpet, Cornet orTenor Horn
Water Key Spring - Large - Baritone Horn and Tuba
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
21mm - Leg length from coil centre
12mm - Connecting leg length from coil centre
5.5mm - Internal coil diameter
8mm - Width
Generic water key spring for Baritone Horn or Tuba
Water Key Spring - Medium - Trombone
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
24mm - Leg length from coil centre
8mm - Connecting leg length from coil centre
3.8mm - Internal coil diameter
15mm - Width
Generic medium sized water key spring for Trombone
Water Key Spring - Large - Trombone
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
36mm - Leg length from coil centre
16mm - Connecting leg length from coil centre
4.8mm - Internal coil diameter
15mm - Width
Generic large sized water key spring for Trombone
Water Key Spring - John Packer Piston Valve instruments
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
12mm - Leg length from coil centre
14mm - Connecting leg length from coil centre
4.6mm - Internal coil diameter
9mm - Width
For John Packer Model Numbers
All John Packer piston valve instruments
Water Key Spring - John Packer Trombone
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
16mm - Leg length from coil centre
9mm - Connecting leg length from coil centre
5.2mm - Internal coil diameter
17.5mm - Width
For John Packer Model Numbers
Trombone - JP031, JP131, JP132, JP232, JP133, JP138
Water Key Spring - John Packer Trombone
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
26mm - Leg length from coil centre
6mm - Connecting leg length from coil centre
4.2mm - Internal coil diameter
12mm - Width
For John Packer Model Numbers
Trombone - JP230, JP231, JP136, JP236, JP331, JP332, JP233
Water Key Spring For 3rd Slide - Jupiter
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
9mm - Leg length from coil centre over bend
13mm - Connecting leg length from coil centre
4.8mm - Internal coil diameter
7mm - Width
Water Key spring - Jupiter JSL438
Water Key Spring Specification
(Approximate sizes for identification)
Double Torsion
10mm - Leg length from coil centre over bend
18mm - Connecting leg length from coil centre
4.4mm - Internal coil diameter
17mm - Width
For Jupiter Model Number
Trombone - JSL438
