Abstract: A buffer circuit includes an input terminal configured to receive an input signal, an output terminal, an inverter, and a resistor-capacitor (RC) circuit coupled in series with the inverter between the input terminal and the output terminal. The RC circuit includes an NMOS transistor coupled between an RC circuit output terminal and a reference node, a resistor coupled between the RC circuit output terminal and a power supply node, and a capacitor coupled between the RC circuit output terminal and one of the power supply node or the reference node, and the inverter and the RC circuit are configured to generate an output signal at the output terminal based on the input signal.

Abstract: A pressure relief valve includes a bonnet threadedly secured to a pressure vessel, a floating device in the pressure vessel, a relief assembly, an actuator secured to the bonnet and communicating with the bonnet, a biasing element put on a stem and biased between a tubular member and a conic member, and a safety valve. The hollow cylinder is slidable in a space defined by the tubular member and a hollow, cylindrical actuating member. The stem is slidably disposed in the tubular member. Pressurized fluid enters a conic opening via an inlet connector, a first channel, a Venturi tube, and a second channel to push the tubular member so as to disengage a latch from a hook to release the pressurized fluid.

Abstract: A pressure relief valve includes a bonnet threadedly secured to a pressure vessel, a floating device in the pressure vessel, a relief assembly, an actuator secured to the bonnet and communicating with the bonnet, a biasing element put on a stem and biased between a tubular member and a conic member, and a safety valve. The hollow cylinder is slidable in a space defined by the tubular member and a hollow, cylindrical actuating member. The stem is slidably disposed in the tubular member. Pressurized fluid enters a conic opening via an inlet connector, a first channel, a Venturi tube, and a second channel to push the tubular member so as to disengage a latch from a hook to release the pressurized fluid.