---
title: "Dispensers — Master University | Master Services"
description: "The dispenser is the visible point where fuel is authorized, measured and delivered. An unusual reading or flow requires identifying the unit and recording…"
url: "https://masterservices.org/en/master-university/dispensadores/"
language: "en"
---

Pillar

# Dispensers

The dispenser is the visible point where fuel is authorized, measured and delivered. An unusual reading or flow requires identifying the unit and recording the symptom before any intervention. Here we cover system components, observable signs and when to escalate a fault to qualified personnel.

![Editorial engraving of a fuel nozzle, based on the OPW 11 Series](https://masterservices.org/images/editorial/nozzle-engraving-1400.webp)

AI engraving · Reference: OPW 11 Series.

Details & source

Editorial illustration, not a product photograph or installation drawing. Confirm the exact model in the manufacturer documentation.

[Manufacturer documentation](https://www.opwglobal.com/products/us/retail-fueling-products/above-ground-products/standard-dispensing-equipment/automatic-nozzles-gas-station/11a-and-11b-automatic-nozzles)

## Articles

-   [Fuel dispenser calibration in Panama: interval, seal and recordsRT DGNTI-COPANIT 51-2005 sets a three-month maximum interval for dispensers used in public sales; understand the scope and evidence stated in the regulation.](https://masterservices.org/en/blog/calibracion-dispensadores-combustible-panama/)
    
-   [How to tell if a dispenser is miscalibrated: operational signs and the prover testHow to distinguish operational indications from metrological verification and document dispenser testing under Panama’s current technical regulation.](https://masterservices.org/en/blog/dispensador-descalibrado-senales-probador-panama/)
    
-   [Dispenser filters for ethanol-blended fuel in Panama: specs, models, and when to change themHow to select and maintain dispenser filters for ethanol blends using product, function, flow, connection, manufacturer documentation and actual condition, without prescribing one universal model or interval.](https://masterservices.org/en/blog/filtros-dispensador-combustible-etanol-panama/)
    
-   [Wayne, Gilbarco and Tokheim for E10: what their documents stateA comparison of three product lines based on manufacturer documents, with different limits by model, option and configuration.](https://masterservices.org/en/blog/comparativa-dispensadores-e10-wayne-gilbarco-tokheim-panama/)
    

## Glossary

Breakaway

A coupling on the dispenser hose that separates and shuts off fuel if a driver pulls away with the nozzle still in the tank.

Shear valve (impact valve)

A valve under the dispenser designed to shear on impact and seal off fuel flow from the tank, preventing a leak or fire.

## Does your station meet the standard?

Schedule an evaluation with a specialist who knows your station and Panama’s regulations.

[Request an evaluation](https://masterservices.org/en/contacto/#contacto-form)

![Conceptual engraving of a fuel station](https://masterservices.org/images/editorial/university-engraving-720.webp)

Conceptual illustration

Image details

AI-assisted editorial engraving. Not a photograph of a Master Services project.

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