Features: 1. The diaphragm pump combines the advantages of a self-priming pump and a chemical pump. Installed in a dry and well-ventilated place, the pump cannot work in water. 2. adopts many kinds of imported corrosion-resistant materials, self-priming, thermal protection, smooth operation, long-time continuous no-load operation, long-time continuous load operation. 3) Fully sealed, stable pressure. 4) Rubber bracket can absorb vibration when the pump is working. 5) When the water pressure is too high, the pump will protect itself to work normally, the water pipe will not burst, it is safe and durable. 6) Pressure protection: pressure switch power protection. 7) Maximum flow 5-6L/min, maximum pressure 7.0kg, both non-adjustable. 8) Working mode: intermittent duty (different working pressure at different times, continuous work). 9. Using fluids: water or solvent, PH value 5 - 8, oil. Lifespan: more than 500-1000 hours of continuous work. 10. Pressure switch features: When the water is