G - Physics
05
D
G05D 16/16 (2006.01) F16K 7/17 (2006.01)
Patent
CA 2374242
There is provided a pilot valve (50), suitable for use in water and gas supply systems, the valve including biassing means (57), to control a gate (55), for controlling fluid flow through a control chamber (51), and a second chamber (52), which is sealed by a diaphragm (53), the second chamber (52), in use, receiving a control pressure for controlling the operation of the gate (55), such that an increase in control pressure acts to reduce fluid flow through the gate (55). The side of the diaphragm (53), against which the control pressure is not applied, is in fluid communication with the control chamber (51).
La présente invention concerne une vanne pilote (50) destinée aux réseaux de distribution d'eau et de gaz. Cette vanne comporte un organe de ressort (57) commandant un obturateur (55) de façon à réguler un débit de fluide traversant une chambre de commande (51) ainsi qu'une seconde chambre (52) fermée par une membrane (53). La seconde chambre (52) a pour fonction de recevoir une pression de commande régissant le fonctionnement de l'obturateur (55). La face de la membrane (53) ne recevant pas la pression de commande est en communication fluidique avec la chambre de commande (51).
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Technolog Limited
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