Patent ID: 9644757
Date: 2017-05-09
CPC Classifications: F16K,G05D,Y10T

Claim:
1. A valve for controlling fluid flow, comprising: a first actuator comprising an electric motor that is electronically coupled to a power supply, the first actuator having a first end and a second end opposite the first end; a first fail-safe device responsive to failure of the power supply to drive the first actuator, the first fail-safe device positioned proximate the first end of the actuator, and a first valve member coupled to the second end of the first actuator for movement towards and away from a closed position for controlling fluid flow of a first fluid through the valve; wherein the first actuator is held in a control position by the first fail-safe device for normal operation of the valve with the power supply on, and wherein the entire first actuator and the first valve member move towards the closed position in response to failure of the power supply.