Unidirectional Seal Knife Gate Valve

QB Series Knife gate valve is with replaceable rubber seal knife gate structure, its sealing principle is mainly by closely connection between gate and rubber seals. Its main characters is that the rubber sealing ring is set in seat’groove and is locked by metal seat, which will prevent rubber seal off when opening and closing the valve.

Unidirectional Seal Knife Gate Valve

The Unidirectional Knife Gate Valve, it is designed with a single-piece cast body design. It is available with integral metal or replaceable soft seats, allowing for customization based on specific application requirements. The valve is easily automated for on/off applications, enhancing operational efficiency. Whether you are dealing with abrasive materials or corrosive substances, this valve delivers optimal performance. From wastewater treatment plants to mining operations.With integration into automated systems, this valve streamlines operations and reduces the need for manual intervention, minimizing downtime and optimizing productivity.

The QB Series Unidirectional Seal Knife Gate Valve is with replaceable rubber seal knife gate structure, its sealing principle is mainly by closely connection between gate and rubber seals. Its main characters is that the rubber sealing ring is set in seat'groove and is locked by metal seat, which will prevent rubber seal off when opening and closing the valve. If the seal is broken, you can remove the metal seat and replace the rubber seal, which will greatly improve valve' working efficiency. This valve is a cost-effective, high-performance products. The series of knife gate valve can be equipped with pneumatic actuators, in order to meet the requirements of different industrial and mining use.

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Model:QBZ73X

Working Pressure:1~16bar

DN50-DN100 16bar

DN125-DN200 10bar

DN250-DN400 7bar

DN450-DN600 5bar

DN650-DN750 4bar

DN800-DN900 3bar

DN1000 2bar

DN1100-DN1400 1bar

Size:DN50~DN1400

Design Standard:MSS SP-81

Flange Standard:DIN PN10,PN16,150LB ,JIS 10K,TABLE E/D

Face to Face:MSS SP-81

Testing Standard:API-598

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Operation:manual, electric, pneumatic, hydraulic,sprocket, electro-hydraulic, gear ,lever

Main Material:F55, F53, 2205, CF3M, CF8M, CF8, WCB, GGG40

Disc Material:F55, F53, 2205, SS310, SS316L, SS316, SS304

Sealing Material:NBR, EPDM, PTFE, FKM, Graphite, Metal

Packing:Aramid fiber, high-water based fiber, rubber,PTFE, graphite

Applicable Medium:for pulp, cement slurry, gold ore powder,coal slurry, pulp, chemical treatment of sewage, sedimentation tanks, asphalt,acid and other liquids and other media.

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Products Features & Benefits

The Unidirectional Knife Gate Valve designed for easy, quick conversion between manual and pneumatic actuation. Featuring a lubricant injection port for continuous, smooth operation with minimal maintenance
Clevis design and horizontal bolting stabilizes gate ensuring proper alignment
Standard multi-layer square packing provides exceptional gland sealing
Optional energized quad seal packing for enhanced gland sealing
Standard integral metal seat with optional replaceable Class IV metal or Class VI resilient seats
Deflection resistant gate design ensures consistent alignment for industry leading durability
Unique body design with no dead pockets enables self-draining of valve
Lugged body suitable for all mounting orientations including dead-end service

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