Carbon Steel Lugged Rising Stem Resilient Seated Bevel Gear Round Port Knife Gate Valve

Low-Effort, High-Strength Isolation for Large Systems

This specialized knife gate valve is engineered to provide reliable, bubble-tight shut-off in large-diameter pipelines (typically DN300 and above) where high operating torque is a challenge. By integrating a Bevel Gear Operator, the manual effort required to cycle the valve is drastically reduced, enabling safe and smooth operation by a single person.

The valve features a Carbon Steel body for superior structural strength and rigidity, a Resilient Seat for guaranteed zero-leakage isolation, and a Lug-style body for simplified, one-sided pipeline maintenance. This is the ideal solution for robust, low-effort manual isolation of general fluids and wastewater.

Key Features & Operational Advantages

Feature Category	Technical Detail	Core Operational Benefit
Effort Optimization	Bevel Gear Operator	Significantly reduces the handwheel input torque by providing mechanical gear reduction, making large-diameter or high-pressure valves easy to operate.
Structural Strength	Carbon Steel Construction	Provides superior strength and rigidity to withstand high pipeline stresses and high pressure ratings common in large utility and process lines.
Sealing Security	Resilient Seated Design	Guarantees bubble-tight (zero-leakage) shut-off, providing superior sealing for general liquids, wastewater, and non-abrasive media.
Maintenance Ease	Lugged Connection Body	Features individually threaded bolt holes, enabling isolated removal and servicing of the valve from the pipeline without disturbing the inactive side.
Safety Indication	Rising Stem Design	The vertical movement of the stem offers immediate, clear visual confirmation of the valve’s current open or closed status.
Flow & Design	Round Port & Bonnetless	Ensures a full, unobstructed flow path when open, minimizing pressure loss and preventing solids accumulation in the top-works.

Technical Specifications (Standard Bevel Gear Model)

Parameter	Specification Range
Actuation Method	Bevel Gear Operated (Manual)
Body Material	Carbon Steel (WCB) (Optional: Ductile Iron)
Seating Type	Resilient Seated (e.g., EPDM, NBR)
Connection Type	Lug Type (Fully Tapped Holes)
Stem Design	Rising Stem
Port / Flow	Round Port / Full Bore
Recommended Size	DN300 (12 Inch) and larger
Pressure Rating	PN10, PN16, or ANSI Class 150/300
Sealing Direction	Uni-Directional (Standard) or Bi-Directional (Optional).

Target Industry Applications

This valve is critical for manually isolating large main lines where operational ease and structural integrity are key:

Water Treatment & Municipal: Primary isolation on large water distribution lines, lift stations, and raw water intake systems.
Oil & Gas / Utilities: Isolation of non-corrosive utility lines, cooling water systems, and general industrial process fluids.
Manufacturing: Isolation on large supply and effluent lines requiring high structural strength and tight shut-off.

Upgrade Flexibility: The valve’s design facilitates straightforward conversion to Pneumatic or Electric Actuators should your system require automation in the future.