| 摘要 |
A gas regulator for reducing the variation of the outlet pressure in relation to the inlet pressure on reducing inlet pressure, comprises a diaphragm (21) and first spring means (24) acting thereon. Centrally in the diaphragm, there is disposed a pressure member (27) intended to act on a spindle device (28, 31), which co-operates with a movable valve insert which abuts against a valve seat (31), and second spring means (30) acting thereon. The outlet of a valve housing (1) is disposed at the inlet of the gas regulator, the valve housing having a cylindrical core-out in which is disposed an axially displaceable piston (2) sealing against the walls of the core-out, the end surface (A2) of the piston facing towards the regulator inlet being larger than the end surface (A1) facing the inlet of the valve housing. This latter end surface is designed as a cone (10) disposed to abut against a seat (11) provided in the core-out. Valve housing and piston are provided with channels (8, 9, 13, 14) for gas passage from the inlet of the valve housing through the seat and piston to the outlet (16) of the valve housing. A spring means (4) is disposed between recesses in the piston and in the core-out and is operative to displace the piston towards the outlet of the valve housing. |
