Abstract: A safety valve includes a cylinder having an open end and a plug for closing the open end with a hermetic seal. The interior of the cylinder communicates with a high-pressure gas passage. The cylinder is deformed as a function of gas pressure in the high-pressure gas passage to widen the open end. This allows gas in the high-pressure gas passage to escape and thus prevents the gas pressure from increasing beyond an acceptable level.

Abstract: Disclosed is a multifunctional anti-surge three orifices air valve set, comprising a negative pressure admitting valve (1), a small volumes release valve (2) and a mid-high rate venting valve (3) as well as a control isolating valve (4); the mid-high rate venting valve (3) is connected to the top of the negative pressure admitting valve (1) via aeration tube and the control valve, the two orifices being arranged separately rather than being common to each other, in order on the one hand to be selected individually to fulfil respectively the requirements for two different flow rates or speeds or calibers in a mid-high rate venting and a high-rate admitting, and on the other hand to conduct a composite admitting, at a negative pressure, of both flows of admitting air to complement each other; the independency of three orifices allows a high-speed admitting orifice and a small volumes air release orifice to combine and form a “macro-inject and micro-exhaust valve” or a “high-admitting and small-vent valve”, so t

Abstract: Prior art fuel line check valves remain closed after engine off and cool down. Diurnal heating and the resultant pressure increase in the fuel line causes fuel vapor emissions through small openings in the fuel line (e.g., at the injector tips). The invention provides a check valve for a vehicle fuel line which opens in response to engine cooling and remains open while the engine is off to relieve subsequent increasing pressure in the fuel line due to diurnal heating thereof.

Abstract: A valve (60) for use in a brake system (10) through which a source (32) of fluid charges an accumulator (24) to a desired fluid pressure level and through which fluid pressure present in a conduit (52) is communicated to a reservoir (33) in the absence of the flow of fluid from the source. The valve (60) has a housing (62) with a bore (64) therein with an entrance port (66) connected to the source of fluid (32), an exit port (68) connected by a flexible conduit (52) to the accumulator (24) and exhaust port (70) connected to the reservoir (33). A sleeve (72) which is located in bore (64) has an internal bore (74) with a first diameter (82) for retaining a first ball (90), a second diameter (80) for retaining a linkage member (94) and a third diameter (86) for retaining a second ball (92). A first spring (93) urges the first ball (90) toward a first seat (84′) formed between the first (82) and second (80) diameters.