1 BOILER CAP

The boiler cap was initially metal and tightened outside the boiler.
He suffered a substantial change in the first 70 years by changing screwing from external to internal boiler, with thread made of brass.
At the end of 90 years was replaced filleting brass with cheaper plastic.
Too bad that with the excessive heat can melt the screw with leaking water and possible damage to resistance.

 

TYPE

FEATURES

START PRODUCTION

END PRODUCTION

MATERIAL

WEIGHT

DIMENSIONS

AVAILABLE

01 tappo metallo 1.jpg

Metal Cap

 

Model with external screwing

1959

1962

Bakelite-steel

158 gr

6,0 cm x 5,0 cm

no

01 tappo metallo 3.jpg

Metal Cap

 

Similar to the previous with different designs and red circular area on the top

 

1959

1962

Bakelite-steel

141 gr

6,0 cm x 5,0 cm

no

01 tappo metallo 2.jpg

Bakelite and Brass Cap

 

Similar to the previous without red circular area on the top

 

1959

1973

Bakelite-brass

122 gr

6,0 cm x 5,0 cm

no

01 tappo bachelite 1.jpg

Bakelite and Brass Cap

old model

 

model with internal screwing

1974

1990

Bakelite-brass

147 gr

6,0 cm x 5,0 cm

no

01 tappo bachelite 2.jpg

Bakelite and Brass Cap

new model

 

Modello con avvitatura interna alla caldaia

1991

1999

Bakelite-brass

170 gr

6,0 cm x 6,5 cm

no

01 tappo legno old.jpg

Wood and brass Cap

new model

1992

1999

Wood-brass

153 gr

6,0 cm x 6,5 cm

no

01 tappo plastica.jpg

Plastic Cap

new model

 

model entirely in plastic

2000

oggi

Plastic

122 gr

6,0 cm x 6,5 cm

yes

01 tappo legno.jpg

Wood Cap

new model

 

wood model with plastic thread

2000

oggi

Wood-plastic

83 gr

6,0 cm x 6,5 cm

yes