Sealing Types
• Soft Seal
◦ Materials: EPDM, NBR, FKM
◦ Performance: Zero leakage, temperature resistance ≤ 120~200℃
◦ Applications: Water, sewage, air, low-pressure conditions
• Hard Seal
◦ Structure: Triple eccentricity, reducing friction
◦ Materials: Stainless steel, hard alloy
◦ Temperature Resistance: -40℃~425℃+
◦ Applications: High temperature, high pressure, wear-resistant conditions (steam, hot oil)
Actuation Methods
• Manual: Handle (small diameter), worm gear (labor-saving)
• Electric: Switch type/regulating type, remote automatic control
• Pneumatic: Equipped with cylinder, rapid action, explosion-proof scenarios
Common Parameters
• Nominal Diameter: DN40 ~ DN2000+
• Nominal Pressure: PN6, PN10, PN16, PN25, PN40
• Applicable Media: Water, steam, oil, gas, sewage, weakly corrosive fluids
Applicable Operating Conditions
• Municipal Engineering: Water supply and drainage, sewage treatment
• Power Industry: Circulating water, dust removal, flue gas treatment
• Petrochemical Industry: Oil products, chemical raw materials, natural gas
• Metallurgy: Wastewater, gas, raw material transportation
• HVAC: Air conditioning, hot water, steam regulation
