2. Second letter "Z": Represents Gate Valve / Knife Gate Valve, the product category identifier.

3. Third core letter (distinguishing product grade):

● N: Normal – Standard Type, corresponding to DZN Leak-free Wear-resistant Knife Gate Valve.

● H: High – High Wear-resistant Enhanced Type, corresponding to DZH Leak-free High Wear-resistant Knife Gate Valve.

● T: Heavy-duty Tough – Heavy-duty Type, corresponding to DZT Leak-free Heavy-duty Wear-resistant Knife Gate Valve.

4.Pressure Class: 150 = Class 150, 300 = Class 300 (ANSI pressure class).
5. Nominal Size: Two-digit Arabic numeral representing inches (02 = 2", 08 = 8", up to 36").

II. Three Series Core Parameters and Structural Differences

General Parameters

● Design Standard: ASME B16.34, ASME B16.10

● Pressure Class: Class 150, Class 300

● Size Range: 2" (DN50) – 36" (DN900)

● Gate Disc Process: Laser cladding tungsten carbide, Ni60 wear/corrosion/heat-resistant alloy

● Core Material: High-strength wear-resistant material homologous to slurry pumps

III. Benchmarking International Top Brands, Leading Mining Wear-resistant Valve Standard

Hebei Delin Machinery Co., Ltd. has over 30 years of deep cultivation in mining wear-resistant equipment, focusing on R&D and manufacturing of slurry pumps, wear-resistant knife gate valves and other industrial equipment. Relying on industry-leading wear-resistant material formula, precision casting and laser cladding technology, we create three series of leak-free wear-resistant knife gate valves: DZN/DZH/DZT.
Our products are fully benchmarked against international high-end mining valves such as Canada DSS, US Weir, Tawley Clarkson, breaking the monopoly of imported products, and providing high-quality, long-life, zero-leakage valve solutions for global mining, metallurgy, mineral processing and coal industries.

DZN Leak-free Wear-resistant Knife Gate Valve (Standard Type)

Two-piece steel welded valve body, high processing accuracy, easy installation and maintenance. Equipped with standard wear-resistant lining and DSS leak-free sealing structure to prevent medium leakage. The valve disc adopts laser cladding wear-resistant alloy with stable wear resistance and excellent cost performance, suitable for conventional mining slurry transportation scenarios.

DZH Leak-free High Wear-resistant Knife Gate Valve (Enhanced Type)

Integral cast valve body, stable structure without deformation, stronger pressure bearing capacity. Thickened wear-resistant lining homologous to slurry pumps, greatly improving service life. Optimized sealing structure with more stable sealing performance, upgraded erosion and wear resistance, suitable for high-concentration, moderately severe industrial working conditions, with lower long-term operation cost.

DZT Leak-free Heavy-duty Wear-resistant Knife Gate Valve (Heavy-duty Type)

Elongated integral cast body plus extra-thick elongated wear-resistant lining, full coverage of wear-resistant protection. Top-grade laser cladding technology makes the valve disc reach the industry's top level in wear, corrosion and high temperature resistance. Full leak-free sealing design, zero leakage and no hidden dangers, tailor-made for extreme working conditions, with performance comparable to international top heavy-duty wear-resistant knife gate valves.

Choose Delin Wear-resistant Knife Gate Valves, quality benchmarks internationally, complete after-sales worry-free, helping efficient and stable operation of industrial production!