A valve includes a set screw that is screwable into and out of a complementary female threaded opening in a valve part for changing a setting of the valve, for changing an adjustable flow restriction of the valve, in which the set screw includes a free outer end that projects outside the valve part, and a gripping part on its free outer end for a tool to be engageable thereupon. The free outer end of the set screw includes a male thread onto which a locking nut is screwed. A protective cap is provided for covering the free outer end, that includes a first cap portion with a rotation space for fitting freely rotatable over the locking nut, and a second cap portion with a complementary female thread that is screwed onto the male thread towards a locked position.

A circulation tool includes a tubular outer body having a main bore and at least one flow port in a wall thereof, and a valve seat assembly including a valve body, a valve member, and locking elements are movably mounted within the outer body main bore. The valve seat assembly is biased towards a first position in which flow through the outer body flow port is prevented and the locking element is in the extended position, restricting passage of the valve member along the valve body bore and out of the valve body. The valve seat assembly is movable to a second position in which the locking element is in the retracted position, permitting passage of the valve member along the body bore and out of the body. The valve seat is also movable to a third position in which flow through the outer body flow port is permitted.

The present disclosure provides a pneumatically drivable actuator for setting a position of a valve closure element in a valve, comprising a piston, which is moveable in a pressure chamber by influence of a drive gas, and a locking mechanism for mechanically locking the piston relative to the pressure chamber. The actuator further comprises a ventilation device for venting the drive gas from the pressure chamber while the piston is mechanically locked relative to the pressure chamber, such that pressurization of the pressure chamber is prevented. A method of locking a valve closure element relative to a valve body of a valve that is controllable by a pneumatically driven actuator is also disclosed.

Improvements in a one-way valve cap to allow a homeowner to install the cap without requiring tools. This allows a homeowner to simply remove the existing cap and install the new cap to prevent removal from an unauthorized person. The one-way locking mechanism includes a ramp that prevents a person from unscrewing to cap without a tool. The opening allows a person to insert the tool through the outer housing and into the inner housing to unscrew the inner housing from the valve. A hex key or a custom key design can be used for removing the cap. A seal is inserted in the inner housing and seals the inner housing with the valve. The elastomeric seal prevents intrusion of contamination inside of the valve and also provides an additional seal to the valve to reduce a potential leak of gas from the line.

An adapter connects to a valve to convert the valve to a uniform configuration for connection to a pump. In one application, a conventional Schrader or Presta valve has an adapter to convert the valve to a uniform configuration for connection to a pump. An attachment head of a pump engages and creates a seal with the adapter and has a release mechanism to disengage the attachment head from the adapter.

An apparatus for dispensing pressurized air and/or tire sealant from a pressurized can. The apparatus comprising a nozzle and a locking element for the nozzle and/or a cap including a free length of hose that is positioned within the cap. The locking element locks the nozzle in the non-dispensing position for safety during non-use or in a dispensing position for ease of use. The hose provides an extension for the nozzle for hard to reach places, and stores fully wound within the cap, such as along the inner circumference of the cap.

A valve includes a set screw that is screwable into and out of a complementary female threaded opening in a valve part for changing a setting of the valve, for changing an adjustable flow restriction of the valve, in which the set screw includes a free outer end that projects outside the valve part, and a gripping part on its free outer end for a tool to be engageable thereupon. The free outer end of the set screw includes a male thread onto which a locking nut is screwed. A protective cap is provided for covering the free outer end, that includes a first cap portion with a rotation space for fitting freely rotatable over the locking nut, and a second cap portion with a complementary female thread that is screwed onto the male thread towards a locked position.

An opening tool for a locking cap of a fire hydrant includes a collar with multiple protrusions that can attach to corresponding protrusions provided on an outer surface of the locking cap. The opening tool also includes a main support portion coupled to the collar, a guide supported by the main support portion, the guide including a shaft support, a pin moveably disposed within the guide and a cam lever rotatably coupled to the guide by a shaft. The shaft extending through the cam lever. The shaft being supported by a shaft support. The cam lever including a cam surface in contact with a first end of the pin. The cam surface including a first flat surface, a second flat surface and a curved surface that extends between the first flat surface and the second flat surface.

An apparatus for dispensing pressurized air and/or tire sealant from a pressurized can. The apparatus comprising a nozzle and a locking element for the nozzle and/or a cap including a free length of hose that is positioned within the cap. The locking element locks the nozzle in the non-dispensing position for safety during non-use or in a dispensing position for ease of use. The hose provides an extension for the nozzle for hard to reach places, and stores fully wound within the cap, such as along the inner circumference of the cap.

A tamper-evident device for valves comprises: an anti-theft buckle (1), provided with an anti-theft buckle body (17), a pulling portion (4), a tearable portion (5), an elastic hook (7), and a position limiting surface (6); an anti-theft cover (2), provided with a position limiting contour (8) and a hook receiving portion (9); and a position limiting slot (10) provided at a passage outlet (13) of a valve body (3). During use, the anti-theft cover (2) is connected to the passage outlet (13), and the elastic hook (7) is hooked to the hook receiving portion (9) and fitted to position limiting slot (10) to limit relative positions of the anti-theft cover (2) and the valve body (3). Also disclosed is a valve having the temper-evident device. The temper-evident device is easy to open and can effectively prevent stored materials from being stolen.