Hose Pressure
Drop Chart

Engineering matrix for analyzing PSI loss per linear meter based on internal diameter (ID) and nozzle bore requirements.

Setup Optimization Asset

Official BLAST APEX Site Setup Guide for optimizing pot-to-nozzle distances.

Download PDF Setup Guide

PSI Loss per 15 Meters (at 100 PSI)

Hose ID #4 Nozzle #6 Nozzle #8 Nozzle
19 mm (3/4")3.5 PSI Loss11.0 PSI LossCRITICAL DROP
25 mm (1")1.5 PSI Loss4.5 PSI Loss9.5 PSI Loss
32 mm (1-1/4")0.5 PSI Loss1.5 PSI Loss3.0 PSI Loss
38 mm (1-1/2")Negligible0.5 PSI Loss1.5 PSI Loss

Friction & ID Logic

Air power is lost through friction against the hose wall. An undersized hose (e.g. 19mm with a #6 nozzle) forces high-velocity air into a restricted space, creating turbulence and extreme pressure drop. For technical shipyard runs exceeding 30 meters, switching to a **32mm ID** hose is mandatory to maintain 100 PSI at the nozzle tip.

Setup Configurations

  • Shipyards: 32mm ID (Long-Run Efficiency)
  • Fabrication: 25mm ID (Standard High-Flow)
  • Restoration: 19mm ID (High-Flex Control)