Double Cone Valve

High-Precision Airlock Solutions for Abrasive Bulk Solids

Fourteckh Enviro (India) Private Limited is a premier manufacturer and exporter of high-performance Double Cone Valves. Engineered for demanding industrial environments, our DCVs provide a 100% airtight seal for gravity-fed bulk material handling, making them the preferred choice for systems where pressure integrity and dust-free operation are non-negotiable. Ruged construction with high-hardness materials to withstand abrasive Sinter Dust and high temperatures, continuous duty cycle under harsh conditions. Also Double Cone Valves are commonly used in industries such as pharmaceuticals, food processing, chemical processing, and plastics manufacturing for the precise control and discharge of bulk materials from bins, hoppers, and silos.

Strategic Application :

Double Cone Valve is specifically designed for applications where material abrasiveness would cause premature wear on a rotor. By utilizing a "Double-Door" sequential opening mechanism, it acts as a true airlock—allowing material to pass through while preventing the escape of process air or gas. Our design eliminates the common issue of "material bridging" or sticking. The steep conical geometry ensures that even cohesive powders slide freely, while the robust shaft mechanism is built to handle thousands of cycles with minimal maintenance. With Ni Hard cones it is suitable for very material abrasiveness and high temperature such as sinter plants, ESP Hoppers, Baghouse Hoppers, where the dust collection chambers are under negative pressures. The DCV can handle high abrasive, dusty, grainy, pallet materials, like sinter, sponge iron, fly ash, lime, mineral grains, crushed ore, cement, clinker, gypsum, sugar, plastics, food grade items etc.

Key Technical Features :

• Abrasive Resistance : The seating surfaces are designed to minimize friction. Since the cones move vertically (lifting/seating) rather than rotating, there is no grinding of material between the seal and the housing. With Ni Hard Cones, Spouts of Rockhard/ Hardox grade our DCVs offer very high resistance to wear.
• Dual-Stage Sealing : Features two independent cone-shaped plugs that operate in a timed sequence to ensure at least one seal is closed at all times.
• Actuation Versatility : Available with Pneumatic Cylinders for rapid cycling or Motorized/Counterweight arrangements for controlled discharge.
• Precision Sealing Rings : Equipped with high-grade elastomeric or metal-to-metal seats to handle varying temperatures and chemical profiles.
• Volumetric Feed Control : Ideal for dosing and batching, providing precise regulation of flow rates for powders, granules, and pellets.
• Available Sizes : from 200 NB up to 500 NB

Operational Principle : The Cyclic Seal

The Double Cone Valve operates through a coordinated sequence that maintains a constant pressure barrier:

• Stage 1 (Upper Seal Open) : The top cone retracts, allowing material to fill the intermediate chamber while the bottom cone remains tightly sealed.
• Stage 2 (Interim Close) : Both cones are closed, isolating the material within the valve body.
• Stage 3 (Lower Seal Open) : The bottom cone retracts, discharging the material into the next phase of the process while the top cone prevents air/pressure leakage from above.
• Stage 4 (Reset) : The lower cone reseals, and the cycle repeats.

Technical Specifications :

• Material of Construction : MS, SS304, SS316, or Abrasion Resistant Alloy Steel, Sealing, surface CNC machined for near zero clearance with water tight sealing.
• Cone and seat : Cast Iron, Ni Hard (Hi Chrome up to 55HRC) Type II & IV. ASTM
• Drive Options : Pneumatic, Electric Actuator, or Gravity Counterweight
• Temperature Range : Standard up to 350°C (High-temp options available)
• Common Applications : Bag Filter Discharge, Cyclone Outlets, Smelter plants, Cement & Fly Ash
• Maintenance : Externally accessible seals for rapid inspection

Industry Applications :

Heavy Industry & Minerals :

• Steel, Mining & Metallurgy : Handles Sinter, Sponge Iron, ore powders, metal oxides, and fine minerals. Built for high-wear environments where standard rotary valves would fail.
• Cement & Construction : Ideal for the abrasive transfer of cement, fly ash, gypsum, and lime powder. Frequently used in silo discharge and dense-phase conveying.
• Chemical Processing : Engineered for the safe handling of corrosive, toxic, or highly abrasive chemical powders, ensuring controlled discharge in reactors and mixers.

High-Precision & Sanitary Sectors :

• Pharmaceuticals : Provides high-containment transfer and precise dosing of active pharmaceutical ingredients (APIs). Designed for sterile and cleanroom compliance.
• Food & Beverage : Ensures hygienic, contamination-free flow of powders such as flour, sugar, cocoa, and starch.
• Battery & Electronics : Meets the extreme precision requirements for handling cathode/anode materials like lithium, cobalt, and graphite.

Processing & Manufacturing :

• Plastics & Polymers : Reliable feeding of resin granules and plastic powders into extruders, mixers, and moulding machines.
• Agriculture & Fertilizers : Bulk handling of fertilizer granules, seeds, and animal feed without material degradation.
• Paints & Pigments : Specialized for the batch mixing and discharge of fine pigment powders and fillers.

Some of our valued customers :

• Vedanta Ltd
• SAIL IISCO, BSP
• Tata Steel
• MSP Metaliks
• JSW Steel
• Helios