An improved deflator valve is described herein. The deflator valve has a main body with one or more ports, one or more vents, or port or vent slots for introducing air into or relieving pressure from within the main body in a vortex, circular flow. The deflator valve also includes a piston having an O-ring disposed around an outer circumference of the piston. The O-ring of the piston and the ports and vents are effective for reducing noise and deflation time and improving accuracy and ease of adjusting a pressure setting. The deflator valve can further include a dual or variable rate spring that can achieve an extensive destination pressure range. The deflator valve can also include a threadless lead in, fewer valve stem threads, or a lock chuck for enhanced valve stem attachment methods.

A valve assembly for a vehicle exhaust system includes an exhaust component body defining an exhaust gas flow path and a flap mounted to pivot in the exhaust gas flow path between a minimum flow position and a maximum flow position. At least one bushing supports the flap for rotational movement relative to the exhaust component body about an axis. In one example, a damper is positioned radially between the bushing and the flap and defines an inner diameter that is smaller than an outer diameter of the bushing. In another example, a damper is attached to the flap such that a distal edge is free from attachment to a distal edge of the flap such that as the flap returns to the minimum flow position the damper first contacts the exhaust component body and then the flap contacts the damper.

Described herein is a pressure balanced valve comprising: an armature, wherein the armature has an inlet channel, at least one aperture, and a pressure feedback pin disposed within a hollow interior of the armature, a poppet slidably disposed within the hollow interior and around the pressure feedback pin to enable fluid communication between the pressure feedback pin and the poppet, the poppet and the pressure feedback pin cooperatively comprising the pressure balanced valve, wherein the poppet has at least one channel therethrough, and a biasing spring fit to bias the poppet towards closing the inlet channel.

A pressure valve including a body including at least one admission opening and at least one discharge opening, a slide valve sliding in the body, the slide valve defining a chamber, with the body, and including a head arranged facing a seat of the admission opening, a spring pressing the head of the slide valve against the seat, a lip for applying the head to the seat. The head includes at least one hole bringing the chamber into communication with the discharge opening, each hole being arranged facing the seat and downstream from the lip in relation to the admission opening in order to reduce the pressure in the chamber by a Venturi effect when the slide valve is open.

A relief valve device having a spring, a valve bonnet, a valve stem, a disc holder, a valve disc, a huddling chamber, a blowdown ring, and a nozzle. In the valve device, the valve disc is positioned above the nozzle; the spring is disposed in the valve bonnet; the spring surrounds the valve stem such that a longitudinal axis of the spring and a longitudinal axis of the valve stem are coaxial; the disc holder surrounds an outer periphery of the valve disc and is adjacent and in direct contact with a surface of the valve disc around an entire perimeter of the valve disc; the blowdown ring is disposed at a top section of the nozzle; a bottom section of the nozzle is connected to a bottom surface of a valve body and the top section of the nozzle is connected to the valve disc; and the disc holder is filled with oil.

A spring-operated relief valve can include a biasing assembly, a valve inlet, a valve seat, and a disc assembly that is biased toward the valve seat by the biasing assembly. A fluid guide, such as a groove or chamber, can be formed at the interface between the valve seat and the disc assembly. The fluid guide can be configured to direct fluid that flows across the valve seat to provide an upward force on the disc assembly during a relief event.

A safety valve is configured for use at temperatures at or above 760° C. (1400° F.). The safety valve includes a closure assembly that can create a self-energizing, metal-to-metal seal. In one implementation, this closure assembly includes a disc with an arcuate finger that circumscribes an axis of fluid flow through a seat. The arcuate finger may extend inwardly toward this axis and downwardly toward the seat. This geometry permits the finger to flex in response to pressure of fluid that impinges on the downstream side of the disc, such flexure causing a first sealing surface on the disc to more forcefully contact a second sealing surface on a seat.

A spray nozzle comprising: a body comprising a duct, a seat arranged at the first end, and including an opening forming an inlet, a guide comprising a tubular jacket and a retaining member, the retaining member retaining the jacket in the duct, a plug mounted to slide axially in the channel of the jacket, the plug being pushed back against the opening by a spring, and in abutment against the bottom of the jacket, the guide comprising a radial vent, which comprises a vent channel isolated from the flow of fluid and connecting the inside of the guide jacket to a bore formed in the body of the spray nozzle.

A safety valve is configured for use at temperatures at or above 760° C. (1400° F.). The safety valve includes a closure assembly that can create a self-energizing, metal-to-metal seal. In one implementation, this closure assembly includes a disc with an arcuate finger that circumscribes an axis of fluid flow through a seat. The arcuate finger may extend inwardly toward this axis and downwardly toward the seat. This geometry permits the finger to flex in response to pressure of fluid that impinges on the downstream side of the disc, such flexure causing a first sealing surface on the disc to more forcefully contact a second sealing surface on a seat.

A damping valve for a hydraulic damper (D) comprises a valve housing comprising an inlet chamber and an outlet chamber. A housing valve seat is arranged between the inlet chamber and the outlet chamber. A valve element having a cylindrical first portion is slidably received in a cylindrical bore of the valve housing and a second portion has a valve surface for selectively engaging and disengaging the housing valve seat to allow passage of hydraulic fluid between the inlet chamber and the outlet chamber. A spring element is mounted within the valve housing for biasing the valve element into engagement with the housing valve seat. The bore of the valve housing has a closed end defining a bore chamber between an end of the first portion of the valve element and the closed end of the bore. A first passage provides fluid communication between the bore chamber and the inlet chamber.