Pressure regulating valve for presure cooker

Details Pressure regulating valve for presure cooker Pressure regulating valve for presure cooker

1987-08-03

1989-01-24

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

220203, F16K 1500

Patent

active

047995084

ABSTRACT:
A pressure regulating valve for pressure cookers comprises a tubular projection (1) protruding from a cooker lid (2) and on which a needle (4) is poised, that is mounted to the bottom of an inverted cup shaped cylindrical body (6) provided with an external upper threaded projection (7) on which a head (8) is screwed. Steam escape openings (9) and a lower aperture are surrounded by an internal rim (10) and by an external ferrule (11). The rim is screwed on the end outside thread of the tubular projection (1), and the ferrule supports two selectively used weights, bottom (14) and top (15) defining together a spherical shape in the present device. The cup shaped piece (6) is provided with internal longitudinal channels (17) at the bottom of which there are corresponding steam escaping openings (9). Top weight (15) is calotte shaped and defines a chamber (21) with openings (22) to act as a jet breaker for the escaping steam, and head ( 8) has blocking projections (23) for the weights that can be aligned in relation to the longitudinal grooves (25 and 26) of the bottom of the weights for removal of the latter.

REFERENCES:
patent: 1537145 (1925-05-01), Shenton
patent: 2524996 (1950-10-01), Sayers
patent: 2590620 (1952-03-01), Holbik
patent: 2633870 (1953-04-01), Lind
patent: 3949781 (1976-04-01), Scalabrin

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