foam proportioner working principle

The CB10/140 foam fire fighting pump is a commonly used vehicle-mounted or stationary fire water supply system with a rated pressure of 1.0 MPa and a rated flow rate of 140 L/s, meeting the core water supply needs of firefighting systems. The pump body and impeller are constructed of high-quality, wear-resistant materials, offering corrosion resistance and high-pressure resistance. It features a d...

Water fire trucks fight ordinary fires involving wood, paper, and cloth. Foam fire trucks fight flammable liquid fires like gasoline and oil. Which one is right depends on the hazards present. A water fire truck carries a large tank of water and relies on a high-pressure pump to deliver water through hoses or a deck gun. It is the most common type of fire truck used by municipal fire dep...

A dry powder fire truck is a specialized firefighting vehicle designed to extinguish fires using dry chemical powder instead of water or foam. It is particularly effective for Class B (flammable liquids) and Class C (energized electrical equipment) fires, where water or foam may be ineffective or dangerous. Dry powder works by interrupting the chemical chain reaction of the fir...

Foam fire trucks are essential for fighting flammable liquid fires at airports, oil refineries, chemical plants, and fuel storage facilities. Like all specialized equipment, foam fire trucks require regular maintenance to stay ready for emergencies. This article covers common faults and practical solutions. I. Types of Firefighting Foam Before discussing faults, understanding foam types is es...

The foam fire truck is the core equipment for fighting flammable liquid fires. By precisely mixing foam concentrate with water at ratios of 1%, 3%, or 6% (accuracy ±0.5%), this foam fire truck delivers a uniform foam blanket for jet fuel fires at airports or tank fires at refineries. Its stainless steel foam tank and intelligent proportioning system ensure zero mixing errors, increasing fir...

  » The Underlying Logic of Foam Fire Extinguishing   ★. Why can't water extinguish oil fires? • Density difference: Water is heavier than oil and sinks directly to the bottom, never touching the flame.   • Boiling over: The water at the bottom vaporizes instantly upon contact with high temperatures, expanding thousands of times in volume, splattering the o...

A compressed air foam system (CAFS) fire truck and a dry powder fire truck may both be used for fighting flammable liquid and gas fires. Both are specialized vehicles designed to handle Class B and Class C hazards. However, their extinguishing agents, working principles, and application scenarios are fundamentally different. This article explains the key differences between dry powder fi...

The fire truck PTO (Power Take-Off) is a power transmission device that transfers engine power to the fire pump. When the firefighter activates the PTO, mechanical power from the engine is transmitted through the transmission and PTO to the fire pump — this is the core working principle of how a fire fighting truck PTO system operates — enabling the pump to deliver high-pressure, high-...