Lennox 79J87 Check Valve at Controls Central

The Lennox 79J87 Check Valve is a small but important part (weighing only 0.26 lbs and measuring 0.34 Inches) found in HVAC systems. It acts like a one-way gate for fluids, allowing flow in one direction and stopping it in the other. This prevents unwanted backflow and protects equipment from damage. The valve is activated by a pressure switch, which ensures flow only happens when a specific pressure level is reached. It is commonly used in various HVAC equipment, including heating and cooling systems. While the information you provided lists voltage (440V) and connection type (SPST), these specifications are not typically relevant to check valves. Check valves are mechanical devices and don't require electrical power to operate.