The Difference Between a Prepay Nozzle and an Automatic Shutoff Nozzle

When selecting a fuel dispensing nozzle, it's important to understand the differences between a prepay nozzle and an automatic shutoff nozzles. While both are used to control fuel dispensing, they serve different purposes and are designed for different fueling applications.

What Is a Prepay Nozzle?

A prepay nozzle is designed for fueling systems that require authorization before fuel can be dispensed. They are commonly used at retail fueling stations and other payment-controlled fueling systems. 

This added layer of control helps prevent accidental spills. If the nozzle's hold-open clip were to fail or remain engaged, fuel will not continue flowing because the system must first receive authorization to dispense fuel. Once the authorized amount has been dispensed or the fueling session ends, the system must be reset before fueling can resume.

Benefits of a Prepay Nozzle

• Requires authorization before fuel can be dispensed
• Helps control fuel-dispensing at payment-controlled stations
• Commonly used at retail and commercial fueling sites
• Helps prevent unauthorized or unintended fuel dispensing

What Is an Automatic Shutoff Nozzle?

An automatic shutoff nozzle is designed to automatically stop the flow of fuel once the vehicle or tank reaches its fill level. Inside the nozzle is a sensing mechanism that detects when fuel reaches the end of the filler neck, automatically shutting off the flow to help prevent overfilling.

Unlike a prepay nozzle, an automatic shutoff nozzle does not require the fueling system to be reauthorized after each fueling session. Its primary function is to automatically stop dispensing fuel when the tank is full.

Benefits of an Automatic Shutoff Nozzle

• Automatically stops fueling when the tank is full.
• Helps prevent overfilling and fuel waste.
• Simple and convenient for everyday fueling.
• Commonly used in fleet, agricultural, industrial, and commercial fueling applications.

Which Nozzle Is Right for Your Application?

The best choice depends on how and where you dispense fuel.

A prepay nozzle is ideal for fueling systems that require authorization before dispensing fuel, such as retail gas stations or other payment-controlled fueling applications.

An automatic shutoff nozzle is a great option for applications where the goal is to safely fill a tank without overfilling, making it a popular choice for fleet fueling, farms, construction sites, and commercial operations.

Find the Right Fuel Dispensing Equipment at JME

Whether you're replacing an existing nozzle or building a complete fueling system, choosing the correct nozzle helps improve safety, reduce spills, and keep fueling operations running efficiently.

JME offers a wide selection of fuel dispensing nozzles, from aircraft and farm nozzles to DEF, cold weather, and poly dispensing nozzles. We carry trusted brands like OPW, M. Carder, Husky, and Catlow.

If you have any questions about Prepay or an Automatic Shutoff Nozzles, give us a call at 1 (800) 333-3331 or contact us, one of our experts would be happy to help!