Manual Handwheel Round Port Lug Rising Stem Bi-Directional Knife Gate Valve

Secure, Bi-Directional Isolation with Easy Maintenance

This heavy-duty knife gate valve is engineered for critical isolation points that require reliable shut-off against pressure from both directions. Equipped with a robust Manual Handwheel and a Lug-style body, it combines maximum operational safety with superior maintenance flexibility.

The Bi-Directional sealing ensures complete fluid or media isolation regardless of potential backflow or differential pressure. The Lugged body allows for simple, single-sided servicing, reducing pipeline downtime and effort. It is the ideal valve for primary isolation in complex industrial systems.

Key Features & Advantages

Feature Category	Technical Detail	Operational Benefit
Sealing Security	Bi-Directional Design	Guarantees bubble-tight isolation against pressure from either the upstream or downstream side, crucial for pump isolation and safety.
Maintenance Ease	Lugged Connection Body	Features threaded bolt holes, allowing for the isolation and removal of one side of the pipe while the other side remains undisturbed. Minimizes system downtime.
Operation	Manual Handwheel	Provides simple, direct, and reliable actuation without the need for external power sources or complex control systems.
Safety Indication	Rising Stem	The stem’s vertical movement offers clear, unambiguous visual confirmation of the valve’s exact open or closed position from a distance.
Flow Efficiency	Round Port Geometry	Ensures a full-bore opening that minimizes pressure drop, wear, and potential turbulence, making it excellent for general fluids and slurries.
Non-Clogging	Bonnetless Design (Typically)	The simplified top-works construction (implied by the design) prevents solids from accumulating and ensures smooth gate cycling.

Technical Specifications (Standard Model)

Parameter	Specification Range
Valve Type	Knife Gate Valve
Actuation Method	Manual Handwheel
Sealing Direction	Bi-Directional
Connection Type	Lug Type (Fully Tapped Holes)
Stem Design	Rising Stem
Port / Flow	Round Port / Full Bore
Size Range	DN50 to DN600 (2″ to 24″) – Larger sizes often require Bevel Gear
Pressure Rating	PN10, PN16, or ANSI Class 150
Body Material Options	Ductile Iron (Standard), Stainless Steel (SS316), or Carbon Steel (WCB)
Gate Material	Stainless Steel (SS304 / SS316)
Seating Material	Resilient (e.g., EPDM) for tight shut-off, or Metal for high temp.

Target Industry Applications

This valve is highly valued for its robust sealing and ease of integration in pipeline systems across:

Wastewater Treatment: Isolation of pump stations, secondary sludge lines, and critical shut-off points.
Chemical & Process Industry: Handling general fluids, low-abrasion slurries, and chemical lines where bi-directional isolation is a safety requirement.
Mining: Isolation on less abrasive mineral processing or tailings lines.
General Industrial: Any system requiring a reliable, manual, and easily serviceable isolation valve.

Need Reduced Effort? For larger sizes (typically DN300 and above), we highly recommend upgrading to the Bevel Gear Operator to maintain the ease of manual operation.