LHB/LHS Non-Leakage Chemical Process Pump

The LHB and LHS series non-leakage chemical process pumps were developed by Jiangsu Rongsheng Import and Export Co., Ltd. in early 1998, based on the latest imported foreign centrifugal pump technologies and continuously optimized through years of manufacturing expertise.

Featuring a patented negative pressure seal structure, the mechanical seal operates without bearing system working pressure — fundamentally eliminating the long-standing leakage issue that plagues conventional chemical pumps.

As single-stage single-suction cantilever centrifugal pumps, the LHB/LHS series comply with GB5662-1985 (equivalent to ISO 2858-1975) in marking, rated performance parameters, and overall dimensions. They belong to the same product category as the nationally promoted IH-type chemical pumps, ensuring excellent interchangeability and broad industry acceptance.

Why Choose a Non-Leakage Chemical Pump?

In chemical processing, pharmaceutical manufacturing, new energy materials production, and other critical industries, media leakage means more than just product loss — it represents safety hazards, environmental pollution, and regulatory compliance risks. The industry-wide transition toward zero-leakage pumping solutions is accelerating, driven by stricter environmental regulations and higher safety standards.

The LHB/LHS series addresses this challenge through its negative pressure seal design, which completely isolates the mechanical seal from system pressure. Even under demanding conditions involving rising pressure and falling flow rate, the seal faces no pressure-induced wear, delivering genuine, long-term zero leakage — making it the ideal choice for modern clean and civilized production workshops.

Core Technology: Negative Pressure Seal Structure

How it works: The seal chamber maintains a negative pressure state during pump operation. Media is continuously "drawn in" rather than "forced out" — even if microscopic clearances develop at the sealing faces, there is no path for leakage to occur.

Model Code Interpretation

Example: LHS100-80-30

Non-leakage lined plastic chemical centrifugal pump with 100mm suction inlet, 80mm discharge outlet, and 30m rated head.

Service Conditions & Media Compatibility

The LHB/LHS series is engineered to handle a wide range of corrosive, toxic, flammable, and high-value liquid media, including but not limited to:

• Inorganic Acids: Sulfuric acid, nitric acid, hydrochloric acid, phosphoric acid, etc.
• Organic Acids: Acetic acid, citric acid, etc.
• Alkaline Solutions: Sodium hydroxide, potassium hydroxide, etc.
• Salt Solutions: Various chloride and sulfate solutions
• Organic Compounds: Solvents, petrochemical products
• Other Corrosive Liquids

These pumps are widely deployed in petrochemical, fine chemical, pharmaceutical, new energy materials, electroplating, environmental engineering, metallurgy, and other industries requiring reliable corrosion-resistant pumping solutions.

Seal Options

To accommodate different media characteristics and operating conditions, the LHB/LHS series offers three sealing configurations:

Engineering Excellence & Quality Commitment

Jiangsu Rongsheng Import and Export Co., Ltd. is a professional enterprise deeply engaged in the R&D, manufacturing, sales, and technology transfer of industrial process equipment. Our core team comprises senior engineers with over 10 years of industry experience, capable of delivering complete solutions from equipment development and custom fabrication to on-site installation, technical direction, and after-sales service.

The LHB/LHS series represents nearly three decades of continuous refinement since its inception in 1998 — a legacy of engineering rigor that ensures exceptional reliability, process adaptability, and extended service life.

Quality Standards:

• Fully compliant with GB5662-1985 (equivalent to ISO 2858-1975)
• Same product category as the nationally promoted IH-type chemical pump, ensuring broad interchangeability
• Customizable material selection and seal configurations based on specific media requirements

Inquiry & Technical Support

For detailed technical specifications, sizing calculations, or customized solutions, please contact our engineering team.

Tel: +86-18762401797

Email: jinxin@jsrongsheng.com