Fully chromed Easy to read dual scale gauge with screw-on polycarbonate lens for durability Precision engineered pressure compensated design flowmeter for precise flow Piston type construction Flowmeter with easy to read tube and virtually unbreakable transparent polycarbonate outer cover for strength and 3600 visibility Sintered bronze inlet filter. This design is simple and accurate. Yuyao Jiahua Medical Appliance Co.,Ltd. was involved in medical equipments since 1995 and is a Chinese company of having real strength. We specialized in the manufacture of Medical Oxygen Regulator,oxygen flowmetre, Medical Gas Delivery and suction systems, humidifier varies of pressure gauges, reductors, flowmeters, valves, gas cylinder, and their related products.Also we could offer OEM service. Our products have exported to Taiwan, Thailand, Vietnam,Middle East,east and south Asia and have gained a lot of great fame in international and domestic market.