Worm Gear Metal Triple Eccentric Cast Steel Flanged Butterfly Valve - WCB Z2588 DN700 16C Stainless Steel Hard Seal Industrial Valve

Core Advantage: Triple Eccentric Structure + Hard Seal Design, Suitable for High-Pressure Working Conditions with Long-Lasting Leak-Proof Seal

As a core control valve for industrial pipeline systems, this product combines a metal triple eccentric structure with stainless steel hard seal technology, paired with a WCB cast steel valve body and worm gear transmission. It can stably meet the medium cut-off and regulation needs of large-diameter DN700 pipelines, with a pressure rating of 16C (1.6MPa). Widely used in high-pressure, high-temperature, and strongly corrosive working conditions such as chemical industry, electric power, metallurgy, and municipal water supply, it is a key equipment for the safe operation of industrial systems.

I. Core Parameters: Accurately Matching Working Condition Requirements

Item

Specification & Parameter

Description

Model

Z2588

Worm gear transmission, triple eccentric structure, flanged connection butterfly valve

Valve Body Material

WCB Cast Steel

High-strength cast steel material with high tensile strength and excellent temperature resistance (-29℃~425℃). Its impact and corrosion resistance are superior to ordinary carbon steel.

Nominal Diameter (DN)

700mm

Large-diameter design, suitable for large-flow pipeline systems to meet industrial-grade medium transportation needs.

Pressure Rating

16C

Nominal pressure of 1.6MPa, capable of withstanding high-pressure working conditions, suitable for medium and high-pressure pipeline systems.

Seal Type

Stainless Steel Hard Seal

The valve seat and butterfly disc adopt stainless steel hard seal pairing, featuring wear resistance, anti-aging properties. Its seal life is much longer than that of soft seals, with no risk of medium swelling.

Transmission Method

Worm Gear Transmission

Worm gear and worm reduction structure ensures labor-saving operation and stable torque. It can be manually adjusted, and electric/pneumatic actuators can be added as needed to achieve automatic control.

Structural Feature

Metal Triple Eccentric

The triple eccentric design (offset from valve seat center, valve core center, and valve shaft center) ensures no friction between the butterfly disc and valve seat during opening and closing, effectively reducing wear, extending seal life, and achieving bidirectional sealing for more reliable cut-off performance.

II. Performance Highlights: Solving Core Pain Points of Industrial Valves

Superior Sealing, Zero Leakage Guarantee: The stainless steel hard seal surface undergoes precision grinding. Combined with the "friction-free opening and closing" feature of the triple eccentric structure, the sealing accuracy meets the zero-leakage standard of GB/T 13927-2008 Industrial Valves - Pressure Testing, effectively preventing medium leakage or cross-contamination. It is especially suitable for transportation scenarios of toxic, harmful, and flammable media.

High Pressure & Temperature Resistance, Suitable for Harsh Working Conditions: The WCB cast steel valve body undergoes integral forging and heat treatment, with excellent mechanical strength. It can work stably for a long time within the temperature range of -29℃~425℃, withstand high pressure of 1.6MPa, and resist erosion from strongly corrosive or high-temperature media such as acid-base solutions, high-temperature steam, and oil products.

Large-Diameter Efficient Flow, Low Flow Resistance Design: The DN700 diameter is suitable for large-flow pipelines. The streamlined design of the butterfly disc reduces medium flow resistance, with lower pressure loss than gate valves and globe valves, improving the transportation efficiency of the pipeline system.

Stable & Durable Worm Gear Transmission: The worm gear box adopts a closed structure, with built-in high-precision worm and copper worm gear. It features stable transmission, low noise, and labor-saving and convenient manual operation. Meanwhile, it can effectively prevent external dust and moisture from entering the transmission mechanism, extending the overall service life of the valve.

III. Application Scenarios: Covering Industrial Needs of Multiple Industries

Chemical Industry: Used for cut-off and regulation of pipelines transporting corrosive media such as acid-base solutions, organic solvents, and chemical raw materials. The WCB cast steel valve body and stainless steel seal surface can resist chemical corrosion, ensuring production safety.

Electric Power Industry: Suitable for high-temperature steam pipelines and circulating water pipelines in thermal power plants and nuclear power plants. Its temperature and pressure resistance can meet the harsh working conditions during unit operation, realizing precise medium control.

Metallurgical Industry: Applied in pipelines transporting media such as cooling water, hydraulic oil, and gas in iron and steel, non-ferrous metal smelting. Its impact resistance and wear resistance can cope with the complex environment of metallurgical workshops.

Municipal & Water Treatment: Suitable for large-diameter water transmission pipelines in urban water supply and sewage treatment plants. The hard seal design can prevent impurities in sewage from wearing the seal surface, ensuring long-term leak-free operation.

IV. Quality Assurance: Ingenious Manufacturing, Worry-Free After-Sales Service

Production Standards: Strictly produced in accordance with domestic and international standards such as GB/T 12238-2008 Flanged and Wafer Type Butterfly Valves and API 609. Each valve undergoes water pressure test, seal test, and torque test before leaving the factory to ensure qualified performance.

Material Traceability: Core components such as WCB cast steel and stainless steel seals are provided with material certificates, enabling traceability of raw material sources, eliminating inferior materials, and ensuring long-term stable operation of the valve.

After-Sales Support: Professional installation guidance and maintenance suggestions are provided. In case of quality problems, free repair or replacement services within the warranty period are available to solve your worries.

Choosing this worm gear metal triple eccentric cast steel flanged butterfly valve provides a "high-strength, high-sealing, high-durability" core control solution for your industrial pipeline system. Suitable for DN700 large-diameter and 16C high-pressure working conditions, it is a reliable choice for the safe and efficient operation of industrial production!