Electrically actuated valves

A valve, comprising:

• a housing comprising a bottom plate, a first fluid port and a second fluid port;
• an actuator component arranged such that the bottom plate of the housing engages the actuator component, the actuator component comprising:
• a carrier attachable to the housing;
• a plunger arranged on the carrier and comprising a sealing surface arranged at a top end of the plunger;
• a shape memory alloy actuator arranged co-linearly with the plunger between the carrier and the plunger and configured to exert an actuation force onto the plunger;
• and
• a spring co-linearly arranged with the plunger between the carrier and the plunger and configured to exert a bias force onto the plunger,
• wherein the actuator component is arranged such that the sealing surface of the plunger can sealingly engage the first fluid port, and
• wherein the actuator component is arranged in-between the first fluid port and the second fluid port of the housing in a fluid flow path between the first fluid port and the second fluid port;
• and
• a circuit board comprising circuitry configured to provide an electrical current to actuate the shape memory alloy actuator,
• wherein the housing is at least partly arranged between the circuit board and the carrier, and
• wherein the housing comprises through holes configured to receive electrical pins of the actuator component extending towards the circuit board.