Double Hydraulic Actuator Square Port Knife Gate Valve

Extreme Power and Automated Isolation for Large-Scale Bulk Solids

The Double Hydraulic Actuator Square Port Knife Gate Valve is a heavy-duty, automated isolation solution engineered for controlling massive volumes of powders, grain materials, small particle materials, and highly charged fluids. It is specifically designed to manage or rapidly cut off flow at the bottom of large tanks and hoppers.

Featuring a square/rectangular port and robust, same construction as standard knife gate valves, this valve’s defining characteristic is its Double Hydraulic Cylinder actuation. This setup provides maximum, reliable thrust, making it the ideal choice for extra-large valve sizes (up to DN $1500 \times 1200$ ) and applications where the gate must reliably shear through highly compacted or high-density materials. It is widely used across the power, food, mining, metallurgical, and building materials industries.

Key Features & Extreme Thrust Advantages

Feature Category	Technical Detail	Core Operational Benefit
Actuation Power	Double Hydraulic Actuator	Provides maximum and balanced closing force, essential for reliably cutting off large volumes of high-density solids and ensuring zero leakage.
Flow Geometry	Square/Rectangular Port	Custom designed for specialized equipment and the bottom of tanks, optimizing the discharge of solids products.
Scale & Capacity	Large Size Range	Suitable for large-scale applications, with sizes from DN $800 \times 500$ up to DN $1500 \times 1200$ .
Function	Rapid Flow Control/Cut Off	Used for controlling the rapid flow of change or cut off media in demanding automated systems.
Construction	Robust Design	Features the same basic construction as a standard knife gate valve, with the body and gate disc in a rectangular shape.
Connectivity	Square Flange Ends	The square flange connection ensures a robust seal and easy adaptation to the customer’s installation at the tank bottom.

Technical Specifications (Double Hydraulic Square Port Model)

Parameter	Specification	Notes
Nominal Size Range	DN800xDN500…….DN1500xDN1200	Manufactured to specific square/rectangular dimensions.
Pressure Range	Class 150 /PN6 /PN10	Suitable for low to moderate pressure large-scale bulk handling.
Applicable Temperature	0~200℃
Connection Type	Square Flange	Standard connection for hopper/tank discharge.
Operating Mode	Hydraulic Cylinder (Double Actuator)	Pneumatic mode also available.

Major Component Materials

Component	Material	Notes
Body	Carbon Steel, Stainless Steel
Gate Disc	Stainless Steel, Carbon Steel	Rectangular valve shape.
Sealing	Rubber, Metal Seal	Chosen based on application temperature and media.
Actuators	Double Hydraulic Cylinders	Same actuators as standard knife gate valves.

Target Industry Applications

This valve is the main control equipment for solids and highly charged fluids, commonly used to cut off medium on the bottom of tanks in:

Mining and Metallurgical: Control of coarse ores, crushed rock, and high-density materials.
Power: Ash handling and large-scale bulk storage discharge.
Building Materials: Cement, lime, and aggregate control.
Food Industry: Large grain, powder, and dry solid handling (requires specific sanitary execution).
Chemical and Sewage Treatment: Controlling high-solids fluid flow.