Abstract: An indicator adapted to provide a visual indication of an over pressure situation in a system. The indicator (also referred to as a pop indicator), includes a main body, a piston that is disposed in the main body, and one or more O-rings disposed around the piston. Initially, the piston is in a first position where the piston is retracted into the body. However, when an over pressure situation occurs, the pressure causes the piston to move in a direction out of the main body against a friction force created by the O-ring. When the piston is moved, i.e., popped, then end of the piston extending out of the body provides a visual indication.

Abstract: An indicator adapted to provide a visual indication of an over pressure situation in a system. The indicator (also referred to as a pop indicator), includes a main body, a piston that is disposed in the main body, and one or more O-rings disposed around the piston. Initially, the piston is in a first position where the piston is retracted into the body. However, when an over pressure situation occurs, the pressure causes the piston to move in a direction out of the main body against a friction force created by the O-ring. When the piston is moved, i.e., popped, then end of the piston extending out of the body provides a visual indication.

Abstract: A pressure relief valve with a stop disposed thereon to ensure components of the pressure relief valve are properly aligned and tightened properly. This allows the components and pressure relief valve to be properly installed and the pressure relief valve to function properly. The stop feature also reduces the time of installation and amount of labor needed to install pressure relief valves and their components.

Abstract: A manifold that allows replaceable pressure relief components to be installed and replaced without requiring a system shut down. The manifold allows two pressure relief valves to be installed in separate pressure relief ports. The manifold also includes a valve switch that isolates each valve independently, while allowing the system to remain in operation. For example, in a first position, the manifold directs fluid flow to a first pressure relief valve, while a second pressure relief valve is isolated.

Abstract: A pressure relief valve with a stop disposed thereon to ensure components of the pressure relief valve are properly aligned and tightened properly. This allows the components and pressure relief valve to be properly installed and the pressure relief valve to function properly. The stop feature also reduces the time of installation and amount of labor needed to install pressure relief valves and their components.

Abstract: A manifold that allows replaceable pressure relief components to be installed and replaced without requiring a system shut down. The manifold allows two pressure relief valves to be installed in separate pressure relief ports. The manifold also includes a valve switch that isolates each valve independently, while allowing the system to remain in operation. For example, in a first position, the manifold directs fluid flow to a first pressure relief valve, while a second pressure relief valve is isolated.