A flow rate control valve includes: a valve casing forming a fluid passage; a valve seat provided in the fluid passage; a stepping motor; a valve guide stroke-controlled by the stepping motor via a feed screw mechanism; a valve body configured to be placed and separated on and from the valve seat; a connector connecting the valve guide and the valve body so as to allow them to move in an axial direction within a predetermined range; a valve spring biasing the valve body in a closing direction. When closing the valve body, ECU controls the motor to a closed state such that a connection between the valve guide and the valve body by the connector is released, with the valve body being seated on the valve seat, and the valve guide being situated at a non-contact position spaced away from the valve seat.

Flow rate control valve and fuel vapor processing apparatus including the same

The invention relates to a gas control valve for the control of a quantity of gas to be supplied to a gas burner, having a direct pressure regulator which has a valve body that can be moved by an electronically controlled stepper motor.

Gas control valve

The invention relates to a gas control unit of modular design, in particular for controlling the quantity of gas to be fed to a gas burner, having a pneumatically controlled gas control valve that is configured as a whole as a module and is usable in such a gas control unit of modular design together with a gas safety valve.

Gas control unit of modular design and modular gas control valve

An actuator for adjusting a pilot valve in a gas supply regulator, includes a drive electric motor to provide rotational movement to a first drive shaft, an emergency electric motor to provide rotational movement to a second drive shaft, a differential gear arrangement coupled to the first drive shaft and coupled to the second drive shaft to generate rotational movement of an actuator drive shaft from the rotational movement provided by one of the first drive shaft and the second drive shaft, and a rotary to linear device coupled to the actuator drive shaft to convert rotational movement of the actuator drive shaft into a linear movement for adjusting the pressure valve.

Actuator for a regulator pilot valve

An assembly for reducing excess piping pressure in a fluid distribution system. The assembly includes a fluid regulator (212) including a body (304) defining an inlet (316), an outlet (320), and a fluid passageway (324) between the inlet (316) and the outlet (320), a first control element (332) movable relative to a valve seat (329) in the fluid passageway (324) to control fluid flow therethrough, a valve stem (336) coupled to the first control element (332), and an actuator assembly (312) operatively coupled to the valve stem (336) to control a position of the first control element (332). The assembly also includes a solenoid valve (222) coupled to the fluid regulator (212) at a position upstream of the outlet (320), the solenoid valve (222) adapted to receive a control signal (226) indicative of zero demand downstream of the fluid regulator (212), and having a second control element (512) that is movable, responsive to the control signal (226), from a first position to a second position to reduce fluid flowing through the fluid passageway (324).

Solenoid operated valve for reducing excessive piping pressure in a fluid distribution system

The invention relates to a gas regulating unit (100) of modular construction, in particular for regulating the amount of gas to be supplied to a gas burner, and to a gas regulating valve (1) which, as a whole, is in the form of a module and which can be used in an aforementioned gas regulating unit of modular construction.

Gas regulating unit of modular construction and gas regulating valve

Die Erfindung betrifft ein Verfahren zur Regelung eines brenngasbetriebenen Heizgerates unter Nutzung einer lonisations-Sollwert-Leistungskennlinie, wobei das Verfahren eine Plausibilitatskontrolle und eine Gemischkalibration umfasst.

Verfahren zur Regelung eines brenngasbetriebenen Heizgerätes

Die Erfindung betrifft eine Gasregeleinheit in modularer Bauweise, insbesondere zur Regelung der einem Gasbrenner zuzufuhrenden Gasmenge, sowie ein in seiner Gesamtheit als Modul ausgebildetes Gasregelventil, das in einer derartigen, modular aufgebauten Gasregeleinheit verwendbar ist.

Enno Jan Vrolijk

Papers

Gas control valve

Gas regulating unit of modular construction and gas regulating valve

Gas control unit of modular design and modular gas control valve

Verfahren zur Regelung eines brenngasbetriebenen Heizgerätes

Gasregeleinheit in modularer Bauweise und Gasregelventil