Manual Handwheel Full Enclosed Square Port Knife Gate Valve

Customized, Reliable Isolation for Bulk Solids and Ash

The Manual Handwheel Full Enclosed Square Port Knife Gate Valve is a specialized isolation valve designed for non-standard pipelines with square and rectangular shapes. It is the primary control equipment for regulating or cutting off the flow of powders, grain materials, small particle materials, and highly charged fluids。

This valve features a full enclosed body with a rising stem, ensuring the gate’s movement is confined and protected. The robust, welded body construction and Manual Handwheel operation provide a reliable, cost-effective means of shut-off for systems like flow bins, dryers, storage hoppers, and ash tanks. It is widely used across the power, hydraulic, petroleum, chemical, and mining industries.

Key Features & Design Advantages

Feature Category	Technical Detail	Core Operational Benefit
Flow Geometry	Square/Rectangular Port and Disc	Specifically designed and manufactured for specialized equipment, including flow bins, hoppers, and ash tanks.
Operation Type	Manual Handwheel	Provides reliable and simple operation without external power, suitable for non-automated or intermittent service.
Construction	Full Enclosed, Welded Body	Body construction is welded and can be made from several materials, offering robustness and flexibility in material selection.
Connectivity	Square Flange Ends (Customizable)	Connection standard is a square flange, with the design easily adapted to customer’s installation on site.
Seal Integrity	Rising Stem Tight Model	Uses a rising stem to provide clear position indication, with sealing materials available in Rubber or Metal options.
Function	Shut-Off/Isolation	Primarily used to cut off medium in the system, moving the square board up and down to achieve full opening and full closing.

Technical Specifications (Full Enclosed Square Port Model)

Parameter	Specification	Notes
Nominal Size Range	200×200…….1200×1200	Manufactured to specific square/rectangular dimensions.
Pressure Range	Class 150 /PN6 /PN10	Suitable for low to moderate pressure applications.
Applicable Temperature	0~200℃	Temperature range depends on the selected sealing material (Rubber or Metal).
Connection Type	Square Flange	Flange connection standard is custom or specific on customer demand.
Operating Type	Manual Handwheel or Bevel Gear	Bevel Gear option is available for larger sizes requiring reduced operating torque.

Major Component Materials

Component	Material	Notes
Body	Carbon Steel, Stainless Steel	Single-piece welded body construction.
Gate Disc	Stainless Steel, Carbon Steel	Rectangular valve shape.
Sealing	Rubber, Metal Seal	Chosen based on application temperature and media.

Application and Customization

This valve is widely used for discharging bins, tanks, under hoppers for the storage of solids products and for highly charged fluids.

The body and gate disc in a rectangular valve shape allow for easy customization and adaptation to specialized equipment and customer’s installation sites.