Import Bi Directional Knife Gate Valve — Buy in wholesale FOB from Supplier in China

The Bi Directional Knife Gate Valve from Zhengzhou Free Fluid Control Technology Co., Ltd. is a full-bore slurry gate valve engineered for zero-leakage sealing in both flow directions. It handles NPS2 to NPS48 (DN50 to DN1200) with a pressure rating of Class 150, PN6 or PN10, and operates from 0 to 200 degrees Celsius. The wafer connection and U-shaped peripheral seat design ensure full-port flow with minimal pressure drop and non-clogging shutoff. The body is cast from ductile iron, the disc is stainless steel, and the sealing material options include rubber or PTFE.

The blade-shaped disc bottom is purpose-built to cut through soft materials such as fibre, pulp and wood pulp, enabling reliable opening and closing in fibrous or slurry applications. The integrated body structure uses precision casing, while the replaceable flexible wire-reinforced elastomer seat embeds directly into the body to reduce friction during gate movement. This construction extends seat life and achieves bi-directional zero-leakage shutoff. No groove on the valve seat prevents media accumulation on the sealing surface, eliminating a common cause of leakage or disc blockage in competitor designs.

This valve suits mining and coal-washing plants for wash coal pipes, filter slurry pipes and ash discharge lines; purification systems handling wastewater, mud and suspended solids; and paper mills processing pulp at any concentration. Operating modes include hand wheel, bevel gear, pneumatic, electric and hydraulic actuation. Buyers should confirm face-to-face dimensions to GB/T12221 or API609, pressure test standards to GB/T13927 or API598, and valve body construction to GB/T12224 or ASME B16.34 before specifying.

Zhengzhou Free Fluid Control Technology Co., Ltd. is located at No.93 Zizhu Road, Zhengzhou, Henan Province, 450000, China. The supplier holds a harbour trust tier on the platform, with a response rate of 0.00 percent and an average response time of zero hours; this indicates the supplier has not yet established a response pattern through the platform's messaging system. Buyers should treat contact reliability as unverified and plan communication channels accordingly.

The company lists itself as a manufacturer of industrial flow control equipment with the FREE-Valves product line. No information is provided about year of establishment, factory size, production capacity, number of employees, annual revenue, or specific client references. The listing does not mention any third-party certifications such as ISO 9001, API Q1, or CE marking. Buyers are advised to request a factory audit, quality management system documentation, and reference installations before committing to volume orders.