| 摘要 |
<p>First reducing stage for a two-stage regulator, comprising a nozzle (10, 10') connected by a yoke (20, 20') and a clamping screw (21, 21') to an inlet (101, 101'), a pressure chamber (201, 201'), and a shutoff member (2, 2') that slides, guided by a piston (102) or by a diaphragm (102'), inside said pressure chamber (201, 201'). The adjacent compensating chamber (401, 401') contains a helical spring (3, 3') coaxial with said shutoff member and said end (102) of the shutoff member (2) is provided with a thermally insulating component (202). In the compensating chamber (401) there is interposed, between the helical spring (3) and the tubular part (302) of the shutoff member (2), for the entire length of said spring, a thermally insulating component (402, 502, 602, 702, 802, 902). That side of the diaphragm (102') which communicates with said pressure chamber (201') also has a covering (1002') of thermally insulating material. Said helical spring (3, 3') is completely covered in thermally insulating material (103, 103'). <IMAGE></p> |
