True or false? The piping in a safe suction system must have a check valve at the dispenser.

In a safe suction system, a check valve is not required at the dispenser. Safe suction systems are designed to ensure that the product remains in the piping at all times, preventing backflow toward the tank. The absence of a check valve at the dispenser allows for easier maintenance and operation. If a check valve were installed, it could potentially create issues with vapor recovery and product delivery, and it may not function correctly under certain conditions, such as low product levels.

While there may be configurations or scenarios where specific installations could be recommended, the general standard for a safe suction system clearly states that a check valve at the dispenser is not necessary, making the statement false. This aligns with industry best practices aimed at preventing complications related to product delivery and system integrity.