Exemplary embodiments are directed to butterfly valves, generally including a body assembly. The body assembly generally includes a body, a disc rotationally disposed inside an opening of the body, a bearing disposed inside the disc and the body, and a stem passing through the disc, the bearing and the body. The bearing generally includes an internal bearing edge. The stem generally includes an external stem edge to engage the internal bearing edge to prevent stem blowout from the body. Methods of assembling and positioning a butterfly valve are also provided.

Exemplary embodiments are directed to butterfly valves, generally including a body assembly and handle assembly. The body assembly generally includes a body, a liner disposed inside an opening of the body, and a disc rotationally disposed inside the opening of the body. The body generally includes a male radial protrusion within an inner surface of the opening. The liner generally includes a female radial groove along an outer surface to interlock the liner with the male radial protrusion of the body. Methods of assembling and positioning a butterfly valve are also provided.

Security devices including a lock, shroud, and plug are described. In embodiments the security devices include a shroud that includes a shroud sidewall having an inward facing surface and an outward facing surface. The security devices further include a lock that includes a barrel, wherein the lock is integral with or coupled to the shroud to define a shroud cavity between an outward facing surface of the barrel and the inward facing surface of the shroud sidewall. The plug includes a proximal end, a distal end, and a plug sidewall receivable within the shroud cavity. The plug sidewall includes an inward facing surface defining a plug cavity configured to receive the barrel of the lock therein. Such security devices may be advanced from an assembly state to an unlocked state, and may then be reversibly moved between the unlocked state and the locked state. Security device kits are also described.

A safety faucet includes: a discharge pipe which has a hot water discharge path formed therein; a packing which moves up and down inside the discharge pipe; an operation shaft which is fixed to the packing; an upper cap which covers an upper opening of the discharge pipe, and has an upper cap through-hole formed in a center thereof to expose an upper end of the operation shaft; a lever which is rotatably coupled to the upper end of the operation shaft, and has an auxiliary operation hinge hole formed in an upper end thereof; and a safety member from which an auxiliary operation hinge shaft inserted into the auxiliary operation hinge hole is protruded, and has a cap contacting part formed in a lower end thereof to meet with an upper surface of the upper cap to form a support point.

A manually actuated valve assembly includes a valve body defining a flow passage, a valve member assembled with the valve body, an actuator housing assembled with the valve body, an actuator stem having an upper stem portion coupled with a lower stem portion by a coupling, a rotatable actuator drive member coupled to said upper stem portion, and a biasing spring disposed in the actuator housing. The actuator drive member is rotatable between a first stop position corresponding to a fully open valve position, and a second stop position corresponding to a fully closed valve position. The coupling between the upper stem portion and the lower stem portion is configured to provide an over-travel condition between the actuator drive member and said actuator stem configured to provide a closed valve condition at a predetermined rotational position of the actuator drive member that is offset from the second stop position.

The invention relates to shut-off valve for controlling flow of a pressurised gas. The shut-off valve comprising a body defining a passage extending between a gas inlet channel and a gas outlet channel, and a sealing element, and an emergency stop mechanism. The sealing element arranged to, in a first position, close the passage, and in a second position, open the passage to allow gas to flow between the gas inlet channel and the gas outlet channel through the passage. The invention also relates to a method for controlling flow of a pressurised gas with a shut-off valve and a method for activating an emergency stop of a shut-off valve.

The invention relates to a valve, in particular to a valve with self-locking function which comprises a valve body, a valve element, a valve control assembly, an upper locking assembly and a lower locking assembly; the valve body comprises an upper box body, a lower box body, a water inlet pipe and a water outlet pipe; the lower end of the upper box body is fixedly connected and communicated with the lower box body, the left end of the lower box body is fixedly connected with the water inlet pipe, and the right end of the lower box body is fixedly connected with the water outlet pipe.

A restricted access lockout system restricts access to remotely operated hydraulically actuated valves by utilizing a processor to compare each user's access code against a stored list. The user access code may be provided by card key with an embedded RFID chip, a designated application on a personal device such as a smart phone or smart pad that may communicate with the processor via Bluetooth, Wi-Fi, Internet, or radio. Once the processor grants access to operate various designated hydraulically actuated valves the designated hydraulically actuated valves are unlocked for designated period of time. After the designated period of time expires the hydraulically actuated valves are relocked. Generally, the lock is via a hydraulic cylinder where the hydraulic fluid may be isolated through one or more solenoid control valves. Hydraulic fluid within the hydraulic cylinder and the cylinder provide a sufficient counter to apply force so that the hydraulically actuated valves may not be manipulated. In certain instances, the hydraulic locks may be replaced by mechanical lock. In other instances, the hydraulic cylinders may be supplied with pressurized hydraulic fluid supply by hydraulic pump wherein the pump is actuated by the processor upon command by a user. The pressurized hydraulic fluid and the hydraulic cylinders may in turn allow the user to remotely actuate the hydraulically actuated valves.

A fluid regulator includes a regulator body having a fluid inlet and a fluid outlet connected by a fluid flow path, with a portion of the regulator body forming a first chamber, an orifice disposed in the fluid flow path, a seat, and a control element disposed within the fluid flow path and shiftable between an open position spaced away from the seat and a closed position seated against the seat, with the control element arranged to respond to fluid pressure changes to control flow of a process fluid through the orifice. A diaphragm has a radially inner portion that is operatively coupled to the control element and a radially outer portion that is operatively coupled to the regulator body. The diaphragm includes a resilient redundant diaphragm sandwiched between two metal diaphragms, the diaphragm providing two separate seals.

A valve diaphragm is provided, comprising: an edge region arranged at a narrow side, in particular a tab protruding beyond a functional region of the valve diaphragm, wherein a recess of the edge region comprises, starting from an opening of the recess, a diameter enlargement; and a plastic body which comprises a transponder and whose fastening portion protrudes through the opening, wherein, by means of a shaping process effected in the diameter enlargement of the recess, in particular by hot caulking, at least one region of the fastening portion at least partially fills the diameter enlargement.