DAC Worldwide’s ACR Straight-Thru Pressure Relief Valve Cutaway (373-506) is a professionally sectioned example of a pressure-relief valve commonly used in air conditioning and refrigeration systems. These safety devices help protect liquid receivers and other system components from potentially damaging overpressure conditions.
During normal operation, spring force holds the valve’s seat disc closed. If system pressure rises above the valve’s predetermined setting, pressure acting against the disc overcomes the spring force and opens the valve, allowing refrigerant to discharge through the outlet. The valve closes when system pressure returns to an acceptable level, depending on its design and condition.
A carefully planned cutaway of the valve body and seat area reveals the internal seat, seat disc, spring, adjustment mechanism, and flow path. Painted cutaway surfaces and color-coded components make the valve’s internal construction and operating relationships easier to identify.
The ACR Straight-Thru Pressure Relief Valve Cutaway helps learners visualize how pressure and spring force work together to control valve operation. Its exposed internal configuration supports instruction in pressure-relief principles, component identification, overpressure protection, inspection, and troubleshooting.
The full-size industrial component also helps instructors discuss conditions that may affect relief-valve performance, including damaged sealing surfaces, corrosion, contamination, and debris lodged between the seat and disc. Always inspect, service, or replace relief valves according to the system and valve manufacturer’s requirements.
The cutaway is mounted on a formed-steel, powder-coated modular display panel suitable for tabletop use. It can also be used with compatible DAC Worldwide display fixtures, storage structures, and workstation products.
The equipment is cleaned, primed, and finished with a durable urethane coating to withstand frequent classroom and laboratory use. Carefully selected cutaway areas provide clear visibility of the valve’s principal components and operating characteristics.
Pair the ACR Straight-Thru Pressure Relief Valve Cutaway with additional DAC Worldwide HVAC/R cutaways to compare valve construction, refrigerant-flow control, system protection, and operating principles.
