Check Valves



    HVAC systems require many kinds of valves and pumps to keep
    the system running properly. Check valves are one of the most common valves
    that may malfunction in these heating and cooling units and other appliances.
    The check valve is responsible for keeping the HVAC system balanced properly.
    The “door” of this valve is opened when the system first begins running, and it
    closes when the unit shuts off. When the HVAC is on and running, these systems
    allow the air to flow through providing you with the heating or air
    conditioning you need to keep you feeling comfortable indoors. There are many
    different kind of check valves that can be found in other appliances and
    systems. Two examples of these check valves include an inline check valve and a
    lift-check valve.


    The inline check valve and lift-check valve are very similar
    in that they both move to create a balance of the pressure in these systems.
    When the upstream pressure is on the upstream side of the valve, the in line
    check valve will lift and overcome the pressure, which is called the “cracking
    pressure.” In the case of the door metaphor, the inline check valve is like an
    open door. The door closes when the cracking pressure is reduced to prevent


    These inline check valves are an essential part of the HVAC
    system and can be expected to wear out over time. To properly keep them
    maintained, it’s recommended to hire an HVAC specialist to come in and check the
    efficiency of all the in line check vales to ensure that they are in proper
    working order. The “door” section of the valve is continually under a great
    deal of pressure that, if not properly maintained, will leave you with an
    inefficient system and a high utility bill. Because of the nature of these
    valves, they cannot be sealed using tape or other kinds of sealers and will
    often require a full replacement of the faulty and leaky in line check valve.


    To keep your HVAC system running properly, stay on top of
    maintenance and make the proper repairs as soon as necessary. Hiring an HVAC
    specialist is the first step in keeping your system up to date. These workers
    should check the system at least once a year to check all valves and ensure
    that the system is fully operational with no leaks. A leaky HVAC system will
    only increase your utility bills and leave you with a faulty heating and
    cooling system.