Steam pressure can be adjusted by the top nuts. M6X1 thread. This Safety Valve use for all Wilesco models (from 1990 ) Because the Models prior to 1990 have an M6x1 thread.
Model Maker DualGrit Flexi Sander (3 Pcs - 9 x 1.9 x 0.6cm) Model Tool MM011
1 Pcs GV-A2 3.5mm Pipe 1/4 X 40 Inline Globe Valve for Live Steam
1 Pcs GV-B2 3.5mm Pipe 1/4 X 40 Inline Globe Valve Flange Typefor Live Steam
Evergreen Styrene 9040 2 x White Sheets x 0.040" (1.0mm) Thick x 6" W x 12" L
Evergreen Styrene 9060 1 x White Sheets x 0.060" (1.5mm) Thick x 6" W x 12" L 1
Billing Boats Mahogany Sheet B1048 - 1 x 1.5mm Thick x 100mm Wide x 500mm Long T