Ductile iron bidirectional sealing knife gate valve Chinese supplier

Ductile iron bidirectional knife gate valve is one kind of gate valve, is a straight-stroke cut-off industrial valve. The head of the valve plate of the bidirectional sealing knife gate valve has an oblique sharp cutting edge, which has a certain cutting effect to the medium. Ductile iron bidirectional sealing knife type gate valve is suitable for media containing fibers and solid particles and sewage treatment systems. Bidirectional sealed knife gate valves can be operated by manual hand wheel, electric actuator, pneumatic cylinder, are widely used in automatic control systems of industries like paper making, mining, chemical industry and sewage treatment. 

Introduction about ductile iron bidirectional sealing knife gate valve 

Design standard: MSS SP-81 

Standard for flange end: ASME B 16.5. 

DN: 2″-24″

PN: 150LB 

Valve body material: GGG40/Ductile cast iron(DI) /cast iron(CI) 

Valve plate material: SS 304 

Valve shaft material: 2Cr13 

Valve seat material: Natural rubber(NR) 

Packing: PTFE/EPDM 

Sealing structure: Bidirectional soft sealing

Leakage grade: Zero Leakage. 

Working temperature: ≤100℃ 

Applicable medium: pulp, sewage(waste water), coal slurry,fiber, ash, cement mixture,etc

For more technical data about this ductile iron bidirectional soft sealing knife gate valves, bi-directional rubber sealed knife gate valve supplier, bidirectional knife edge gate valve manufacturer in China, bidirectional knife gate valve price list, bidirectional knife gate valve wholesale price, contact us directly. 

Advantages of ductile iron bidirectional sealed knife gate valve

1. This soft sealing bidirectional knife edge gate valve adopts integral design, which has small fluid resistance and is flexible and convenient for operation. 
2. The screw drive of the manual hand wheel bidirectional knife gate valve adopts a double plane bearing design, which greatly reduces the transmission friction, so that the DI bidirectional knife blade gate valve can be opened easily and smoothly. 
3. The sealing seat of the resilient seated bidirectional knife type gate valve adopts a movable sealing structure, and an O-ring is used to pre-tighten to provide a pre-tightening force so that the sealing seat of the knife gate valve is close to the valve disc, the leakage of the bidirectional knife gate valve is greatly reduced, and it also has the automatic compensation function for the wear of the sealing pair during long-term use, which also improves the service life of the ductile cast iron resilient seated bi-directional sealing knife gate valve. 
4. There is no grooves inside the bidirectional knife gate valve, and it is not easy to cause the accumulation or jamming of the medium. 
5. The valve seat of the DI bidirectional knife blade gate valve can choose metal hard sealing material or resilient soft sealing material according to the needs of the medium and working conditions. The surface of the valve plate of the bidirectional knife gate valve can be chrome-plated or ion nitrided, which makes the valve plate more wear-resistant and the sealing surface of the knife gate valve will have a longer service life. The resilient soft sealing material can choose the PTFE valve seat, or reinforced PTFE valve seat, EPDM seat, NBR resilient soft sealing valve seat material, which has great sealing effect and is corrosion resistant. 
6. Ductile cast iron bidirectional soft sealing knife gate valve can be used for various medias, due to its great sealing performance and affordable price. That DI bi-directional knife gate valve can be driven by manual device, pneumatic cylinder, electric actuator, hydraulic actuator, which can make that type of knife gate valve have a widely application range. 

Belo Valve is one professional Chinese supplier for knife gate valve series, like ductile iron knife gate valve, carbon steel knife gate valve, stainless steel knife gate valves, resilient seated soft sealing knife gate valves, metal to metal seated hard sealing knife gate valves, wafer knife gate valves, wafer lug knife gate valves, flange end knife gate valves, bidirectional knife gate valves, unidirectional knife gate valves, manual operated knife gate valves, pneumatic cylinder operated knife gate valves, electric actuated knife gate valves, for the knife gate valve price, please contact us.