DIN F4 Standard Ductile Iron Soft Sealing Gate Valve | Zero Leakage for Water Supply Systems
100% Bubble-Tight Sealing: Achieve zero leakage (ISO 5208 Rate A) even under low pressure, saving water and reducing pump load.
Durable EPDM Coating: Fully vulcanized rubber lining on the gate provides excellent corrosion resistance and a long service life (20+ years).
Full Bore & Flat Bottom: No sediment accumulation, ideal for raw water and sewage applications with debris.
Superior Corrosion Protection: Fusion-bonded epoxy coating inside & out (WRAS/ACS approved) prevents red water.
Low Torque Operation: O-ring stem seals reduce friction, allowing easy manual operation even for large diameters (DN300+).
OEM & Customization Ready: We support custom flanges (ANSI/BS/JIS), coatings, and gearboxes.