Blind Rod Flange Gate Valve

Description

Blind Rod Flange Gate Valve is specifically engineered for environments where space is at a premium. Unlike rising stem valves, the “blind rod” or non-rising stem (NRS) design ensures the handwheel and stem remain at a constant height during operation, as the internal gate threads move along the stem. This design protects the stem threads from external environmental corrosion and mechanical damage. Built with robust flanged ends, it provides a secure, leak-proof connection suitable for long-term burial or tight mechanical rooms.

Features

• Space-Efficient Design: Because the “blind rod” (internal stem) remains within the valve body, the total height of the valve never changes during operation. This is critical for tight piping arrays.
• Full-Bore Flow: The internal gate retracts fully into the bonnet, providing a completely unobstructed flow path. This results in minimal pressure loss and allows for the passage of pipe-cleaning “pigs.”
• Reliable Sealing: The wedge-type gate ensures a high-pressure seal. When closed, the gate is wedged firmly against the seats to provide a bubble-tight shut-off in water, oil, or gas service.
• Protected Stem Threads: In a blind rod design, the stem threads are typically in contact with the media. We utilize high-grade, corrosion-resistant materials (like stainless steel or bronze) for the stem to ensure long-term durability and prevent seizing.

Specifications

Applications

• Water Conservancy: Underground water supply networks and municipal drainage where vertical clearance is restricted.
• Marine & Shipbuilding: Bilge and ballast systems where deck or engine room space is at a premium.
• HVAC Systems: Chilled water and fire protection lines in commercial buildings.
• Irrigation: Agricultural pumping stations and buried pipeline systems.