A valve for controlling a molten liquid includes an expansion port in liquid communication with an internal volume of the valve that is filled with the molten liquid. An expansion valve can be opened during unfreezing of the valve, to allow melting process substance to expand out of the internal volume into an expansion line as it is melted. During initialization of the valve, an inert gas source, pressure regulator, and ultrasonic transition level sensor can be used to establish a liquid/gas interface at a desired height within the expansion line. The valve can include a multi-zone heater, wherein a first of the zones is adjacent the expansion port, so that during unfreezing, after the first zone has been melted, the remaining zones can be sequentially activated in an order that ensures that each zone is activated only after an adjacent zone has been melted.

A fitting with a body bound by an exterior surface and an interior surface. The exterior surface includes a quick disconnect profile extending from a first end of the body and an external thread extending from a second end of the body. The interior surface includes a first bore extending from the first end of the body and a second bore extending from the second end of the body. The fitting includes an orifice formed by the first bore, between a pin and the first bore, or between the pin and a third bore of an adjustment member installed within the first bore.

A fitting with a body bound by an exterior surface and an interior surface. The exterior surface includes a quick disconnect profile extending from a first end of the body and an external thread extending from a second end of the body. The interior surface includes a first bore extending from the first end of the body and a second bore extending from the second end of the body. The fitting includes an orifice formed by the first bore, between a pin and the first bore, or between the pin and a third bore of an adjustment member installed within the first bore.

Embodiments of the present disclosure relate to a choke valve that includes a choke body, a choke trim disposed in the choke body, where the choke trim is configured to adjust a cross-sectional area of a flow path in the choke body to adjust a fluid flow through the choke valve, a needle of the choke trim disposed in the flow path of the fluid flow, where the needle includes a first portion having a superhard material, a seat of the choke trim, where the needle is configured to move along an axis extending through an opening of the seat to adjust the fluid flow through the choke valve.

Embodiments of the present disclosure relate to a choke valve that includes a choke body, a choke trim disposed in the choke body, where the choke trim is configured to adjust a cross-sectional area of a flow path in the choke body to adjust a fluid flow through the choke valve, a needle of the choke trim disposed in the flow path of the fluid flow, where the needle includes a first portion having a superhard material, a seat of the choke trim, where the needle is configured to move along an axis extending through an opening of the seat to adjust the fluid flow through the choke valve.

An adjustment device for a water delivery unit includes a valve body extending along a longitudinal axis with a water inlet and outlet, a shutter arrangement to control water flow from the inlet to the outlet, a first actuating member movable along the longitudinal axis to arrange shutter arrangement into opening and closing positions to respectively enable/disable the passage of water and a second actuating member rotatable about the longitudinal axis to vary the opening position of the shutter arrangement to adjust a flow rate of the water exiting the valve body. The device has a manual control member coupling with the first and second actuating members and configured to receive a manual action by a user for opening, closing and adjusting the flow rate of the water. The second actuating member cooperates with the shutter arrangement through a cam arrangement for varying the opening position of the shutter arrangement.

A high flow/low flow valve includes a valve body having a fluid inlet and a fluid outlet connected to one another by a fluid passageway. A valve seat is disposed in the fluid passageway. A low flow valve plug is disposed in the fluid passageway proximate valve seat, the low flow valve plug cooperating with the valve seat to control fluid flow through the valve seat. A high flow valve plug is disposed in the fluid passageway proximate valve seat, the high flow valve plug cooperating with the valve seat to control fluid flow through the valve seat. A low flow actuator is operatively connected to the low flow valve plug and a high flow actuator operatively connected to the high flow valve plug.

Staying of a drain on a cylinder attached to a lower side of a valve casing is suppressed, and occurrence of corrosion of the cylinder is suppressed. A steam valve includes a valve casing, a valve disc disposed within the valve casing, a cylinder disposed on a lower side of the valve casing and having a piston rod extending upward, a valve stem vertically penetrating a lower portion of the valve casing and having one end coupled to the piston rod via a coupling and having another end coupled to the valve disc, a cover having a larger diameter than the piston rod and the coupling and configured to separate the piston rod and the coupling from each other by being interposed between the piston rod and the coupling, and a tubular skirt hanging down from a peripheral portion of the cover and surrounding a periphery of a head portion of the piston rod.

A fuel vapor switching and venting valve for an internal combustion engine. The fuel vapor switching and venting valve includes an electromagnet with an armature, a first connection, a second connection, a first valve seat which is arranged between the first connection and the second connection, a spring, a flow limiting element, a second valve seat which is arranged on the flow limiting element, and a valve body coupled to the armature of the electromagnet. The valve body has a first contact surface with which the valve body can be lowered onto and lifted off of the first valve seat, and a second contact surface with which the valve body can be moved against the second valve seat. The second valve seat is axially displaceable. The spring loads the second valve seat in a direction of the valve body.

A fuel vapor switching and venting valve for an internal combustion engine. The fuel vapor switching and venting valve includes an electromagnet with an armature, a first connection, a second connection, a first valve seat which is arranged between the first connection and the second connection, a spring, a flow limiting element, a second valve seat which is arranged on the flow limiting element, and a valve body coupled to the armature of the electromagnet. The valve body has a first contact surface with which the valve body can be lowered onto and lifted off of the first valve seat, and a second contact surface with which the valve body can be moved against the second valve seat. The second valve seat is axially displaceable. The spring loads the second valve seat in a direction of the valve body.