A switch assembly for a valve actuator can include a bracket, a rotatable switch rotatably coupled to the bracket at an adjustable angle, a fixed switch fixedly mounted to the bracket, an arm rotatably coupled to the bracket, and an adjustable switch trigger coupled to the arm. The rotatable switch can be tripped by the valve actuator and a trip point of the rotatable switch can be calibrated by setting the adjustable angle. The fixed switch can be tripped by the switch trigger on the arm and a trip point of the fixed switch can be set by adjusting the switch trigger relative to the arm. The assembly can include a calibration fixture for calibrating the switch assembly to the valve actuator independently of the valve actuator.

A switch assembly for a valve actuator can include a bracket, a rotatable switch rotatably coupled to the bracket at an adjustable angle, a fixed switch fixedly mounted to the bracket, an arm rotatably coupled to the bracket, and an adjustable switch trigger coupled to the arm. The rotatable switch can be tripped by the valve actuator and a trip point of the rotatable switch can be calibrated by setting the adjustable angle. The fixed switch can be tripped by the switch trigger on the arm and a trip point of the fixed switch can be set by adjusting the switch trigger relative to the arm. The assembly can include a calibration fixture for calibrating the switch assembly to the valve actuator independently of the valve actuator.

The invention relates to a membrane pressure switch (1) comprising a housing (2), in which a deformable membrane (3) is arranged, against which a mushroom shaped thrust element (4) abuts, which is movable by the deformation of the membrane (3); and a microswitch (5), which is arranged in the housing (2) opposite the mushroom shaped thrust element (4) by means of a fixing disk (6), wherein the fixing disk (6) is provided with an external thread (7), which is screwed into an internal thread (8) of the housing (2) in the mounted state of the fixing disk (6).

A switch assembly for a valve actuator can include a bracket, a rotatable switch rotatably coupled to the bracket at an adjustable angle, a fixed switch fixedly mounted to the bracket, an arm rotatably coupled to the bracket, and an adjustable switch trigger coupled to the arm. The rotatable switch can be tripped by the valve actuator and a trip point of the rotatable switch can be calibrated by setting the adjustable angle. The fixed switch can be tripped by the switch trigger on the arm and a trip point of the fixed switch can be set by adjusting the switch trigger relative to the arm. The assembly can include a calibration fixture for calibrating the switch assembly to the valve actuator independently of the valve actuator.

The invention relates to a membrane pressure switch (1) comprising a housing (2), in which a deformable membrane (3) is arranged, against which a mushroom shaped thrust element (4) abuts, which is movable by the deformation of the membrane (3); and a microswitch (5), which is arranged in the housing (2) opposite the mushroom shaped thrust element (4) by means of a fixing disk (6), wherein the fixing disk (6) is provided with an external thread (7), which is screwed into an internal thread (8) of the housing (2) in the mounted state of the fixing disk (6).

Systems (100) and methods (2400) for operating a submersible switch positioned below a body of water's surface. The methods comprise: deflecting a semi-rigid top wall of the submersible switch's cap towards a center of the switch when hydrostatic pressure is applied thereto; directly applying a pushing force by the submersible switch's cap onto an actuator of an internal switch disposed in a body of the submersible switch; and causing an operational state change of the submersible switch in response to the pushing force being applied directly to the actuator of the internal switch.

Systems (100) and methods (2400) for operating a submersible switch positioned below a body of water's surface. The methods comprise: deflecting a semi-rigid top wall of the submersible switch's cap towards a center of the switch when hydrostatic pressure is applied thereto; directly applying a pushing force by the submersible switch's cap onto an actuator of an internal switch disposed in a body of the submersible switch; and causing an operational state change of the submersible switch in response to the pushing force being applied directly to the actuator of the internal switch.