If you still need the spec for the Melling spring, it is
VS-1120 : 1.9400 free length 1.4940 outside dimension 1.0800 inside dimension .207 wire size 91-101 @1.65 closed position pressure and length (aka- installed height) 231-245 @1.22 open position pressure and length, 5.625 RH number of coils, 1.1000 solid height.
