1. Material Parameters

• Valve Body / Valve Cover / Valve Disc: Cast steel (WCB, for general low and medium pressure applications), stainless steel (304/316, for corrosion-resistant applications), chrome-molybdenum steel (WC6/WC9, for high temperature and high pressure applications)

Sealing Surface: Stainless steel hard alloy overlay (wear-resistant and high-pressure resistant), PTFE soft seal (leak-free low-pressure sealing)

• Valve Stem: 2Cr13 stainless steel, 304 stainless steel (corrosion resistant, extends service life)

• Packing: Graphite packing (high temperature resistant), PTFE packing (acid and alkali resistant, suitable for corrosive media)

• Handwheel: Cast iron, cast steel (high strength, suitable for high torque operation)

2. Specification Parameters

• Nominal Diameter: DN15~DN300 (corresponding to 1/2"~12")

• Nominal Pressure: PN16, PN25, PN40, PN63 (suitable for medium and high pressure pipeline systems)

• Connection Method: Flange connection (compatible) (Compliant with international mainstream standards such as GB/T, ANSI, and DIN)

3. Operating Parameters

• Operation Method: Manually rotate the handwheel; the valve disc opens and closes by raising and lowering the valve stem.

• Operating Temperature: -29℃~425℃ (WCB material); -29℃~595℃ (WC6/WC9 material); -20℃~180℃ (PTFE soft seal)

• Sealing Grade: GB/T 13927-2008 Class IV (hard seal); Class VI (soft seal, zero leakage)

• Reliable Sealing Performance: Hard-seal models are wear-resistant and high-pressure resistant, suitable for long-term high-pressure operation; soft-seal models achieve zero leakage, meeting stringent sealing requirements.

• Stable and Secure Installation: The flange connection has a large contact area and high connection strength, reducing the likelihood of loosening or leakage, making it suitable for long-term use in large-diameter, high-pressure pipelines.

• Wide Material Compatibility: Available in various materials such as cast steel, stainless steel, and chrome-molybdenum steel, covering complex operating conditions including conventional, corrosive, high-temperature, and high-pressure applications, offering a wide range of applicability.

• Easy Operation and Maintenance: Manual operation requires no additional power source, allowing for flexible on-site adjustment; only the sealing surface and packing are vulnerable parts, resulting in low replacement costs and minimal maintenance workload.

• Simple and Durable Structure: The valve has a compact overall structure with few parts, a low failure rate, a long service life, and high overall cost-effectiveness.

• Petrochemical Industry: Used for pipelines transporting crude oil, refined oil, and chemical solvents, for fluid cutoff and maintenance isolation in plant areas and storage tank areas.

• Power Energy Industry: Used for boiler feedwater and steam pipelines in thermal power plants; the chromium-molybdenum steel version can withstand high temperature and high pressure conditions, ensuring stable system operation.

• Pharmaceutical and Food Industry: Used for pharmaceutical pure water systems and food and beverage processing pipelines; the stainless steel version meets sanitary standards, eliminating the risk of media contamination.

• Metallurgy and Mining Industry: Used for smelting fluid pipelines in metallurgical workshops and high-pressure water supply systems in mines, enabling manual on/off control of equipment and pipelines.

• Municipal Engineering Industry: Used for urban gas and high-pressure water supply and drainage networks, for network zoning control, facilitating later maintenance and repair.