Solenoid actuated shutoff valve

A method, comprising:

• directing fluid flow through a housing of a valve, wherein the fluid flows into the housing through a housing inlet and flows out of the housing through a housing outlet;
• directing a first electric current into a solenoid coupled to the housing to generate a first magnetic field, wherein the first magnetic field exerts a force upon a plunger positioned inside the housing and causes the plunger to magnetically connect to a magnet;
• and
• directing a second electrical current into the solenoid to generate a second magnetic field, wherein the second magnetic field exerts a force upon the plunger causing the plunger to disconnect from the magnet and engage with the housing outlet;
• wherein fluid flows into the inlet through a milking hose, fluid flows out of the outlet into a milking pipeline;
• wherein internal air pressure of the milking pipeline is lower than air pressure in the housing and the higher pressure inside the housing applies a force onto the plunger to facilitate keeping the stopper engaged with the housing outlet.