WUXI CITY HUIHUA SPECIAL INSTRUMENT CO.,LTD.was founded in 2001 and mainly engages in more than ten major categories of products, including digital pressure gauges, pressure transmitters, general pressure gauges, stainless steel liquid-filled pressure gauges, Marine pressure gauges, electrical contact pressure gauges, diaphragm pressure gauges, precision pressure gauges, bimetallic thermometers, flow meters, etc. Research and development, production, sales service and import and export trade of over a hundred varieties of instruments and meters. At home and abroad,we cooperate with manufacturers or traders in various fields through different models like sales, agency, and distribution. At home and abroad,we cooperate with manufacturers or traders in various fields through different models like sales, agency, and distribution. Tel: +86-0510-85182228 Phone / Whatsapp: +86-18068330053 Email: [email protected] Address: No. 23-24, Lihu Business Park, Binhu District, Wuxi City, Jiangsu Province, China. Y Series Specialized Pressure Gauges (Models Y40, Y50, Y60, Y75, Y100, Y150, Y200, Y250) are high-precision instruments designed for measuring the pressure of liquids, gases, or steam in diverse industrial environments. These gauges are primarily suitable for media that are non-explosive, non-crystalline, and non-solidifying, provided they do not corrode copper or copper alloys. To meet the specific demands of modern industry—such as fire prevention, oil-free requirements, or corrosion resistance — this series offers specialized derivatives that maintain the same nominal diameter, installation methods, and accuracy as standard gauges. The first major category is engineered for flammable and explosive media, including the YO Oxygen series, YH Hydrogen series, and YY Acetylene series. These instruments are strictly forbidden from contacting oils or flammable substances and undergo a rigorous degreasing process before delivery to ensure zero oil residue for maximum safety. The second category focuses on media that require specific material resistance or high purity, such as the YA Ammonia series and YDq Nitrogen series. These utilize materials that withstand corrosive media while ensuring that internal detection elements and interfaces remain perfectly clean and oil-free to prevent contamination. YC Series Marine Pressure Gauges (Models YC40, YC50, YC60, YC75, YC100, YC150) are high-precision instruments specifically designed for the rigorous demands of maritime and offshore environments. These gauges are ideal for measuring liquid, gas, and steam pressure on ships and related equipment, provided the media is non-explosive and remains fluid without crystallization. Key features include a luminous dial and pointer coated with a permanent agent, ensuring clear readability in total darkness. The fully sealed shell provides exceptional resistance to seawater corrosion, protecting internal components from waves and salt spray. Additionally, the housing can be filled with low-viscosity damping oil to resist intense vibrations caused by severe weather and medium pressure pulsations. This series is essential for offshore shipping, oil and gas fields, drilling platforms, and subsea mining.