1 / 3Knife gate valve family: handwheel-operated example.
Knife Gate Valve
On/off isolation for lines carrying fibres or sediment
The blade travels across the flow to isolate a line carrying sludge or fibrous material. For example, selecting an isolation valve ahead of pump maintenance at a treatment plant requires more than the nominal diameter: consider solids content, differential pressure on closure and clearance for the rising gate.
Final selection requires the complete product code and the service conditions.
UNDERSTAND THE APPLICATION
A solution for your application.
Application areas
Isolation of sludge lines at treatment plants · On/off duty in paper and fibre-handling processes
Selection considerations
Assess flow direction, solids, differential pressure and actuation.
Specify the nominal line size and connection standard, together with the need for isolation, regulation or automation. Two valves of the same nominal size may differ in materials or connection dimensions.
MANUFACTURER DATA
Technical specifications
| Body options | GGG40 ductile iron or AISI 304 / 316 stainless steel |
| Blade | AISI 304 or AISI 316 |
| Published family limits | Up to 16 bar; up to 150 °C. Check the selected size and seat. |
| Actuation | Manual, pneumatic or electric configuration |
Evaluate pressure and temperature together. Verify the ratings that apply to the selected body, sealing materials and end connections in the model-specific technical document.
DOWNLOADABLE RESOURCES
Technical documents
Open manufacturer PDFs directly from our website and save them to your device. Check the model and document revision.
Frequently asked questions
Is this valve suitable for fine flow control?+
Its main duty is opening or isolating the line. For continuous throttling, select a valve with a defined control characteristic.
Does the 16 bar figure cover every size?+
No. The pressure groups in the dimension table vary with diameter. Quote the DN, operating pressure, temperature and differential pressure together.
What should I verify before specifying Truevalve Knife Gate Valve?+
Evaluate pressure and temperature together. Verify the ratings that apply to the selected body, sealing materials and end connections in the model-specific technical document.
What should I include in my quotation request?+
Line size and connection standard; Fluid, operating pressure and temperature; Isolation or control duty and actuation method. For replacement equipment, also provide the nameplate and connection dimensions.
Where can I check the technical drawing and dimensions?+
Open the manufacturer PDF in the Technical Documents section. Match the relevant entry to the product type, nominal size and variant code. Not every option in a family catalogue belongs to the same product.