China SS/DI PN10/16 Class150 Flange Knife Gate Valve Manufacturers, Factories
Product Description
Key Features
1. The bottom of the gate is a U-shaped sharp blade, which can scrape off the adhesive on the sealing surface and quickly cut off the fluid medium.
2. The surface of the gate has been finely ground and polished, which not only has a better sealing effect, but also effectively protects the service life of the packing and valve seat.
3. The guide block on the valve body makes the gate move correctly, and the extrusion block ensures the effective sealing of the gate.
Quality Control & Manufacturing
Technical Specifications
| Size & Pressure Rating & Standard | |
|---|---|
| Size | DN40-DN2000 |
| Pressure Rating | DN50-100 PN16 | DN150-200 PN10 | DN250-400 PN7 | DN450-600 PN5 | DN650-750 PN4 | DN800-900 PN3 | DN1000 PN2 |
| Design Standard | JB/T8691-2013 |
| Flange Standard | GB/T15188.2-94 chart6-7 |
| Test Standard | GB/T13927-2008 |
| Material Specifications | |
| Body | Ductile iron; WCB; CF8; CF8M; 2205; 2507 |
| Disc | SS304; SS316; 2205; 2507; 1.4529 |
| Stem/Shaft | SS410/420/416; SS431; SS304; Monel |
| Seat | Stainless Steel+STL, EPDM (120°C) / Viton (200°C) / PTFE (200°C) / NBR (90°C) |
| Bushing | PTFE, Bronze |
| O Ring | NBR, EPDM, FKM |
| Actuator | Gear Box, Electric Actuator, Pneumatic Actuator |
Product Gallery
Frequently Asked Questions (FAQ)
Knife gate valves are mainly used in industries such as papermaking, chemical fiber, petrochemical, metallurgy, mud, electricity, sewage treatment, and pharmaceutical processes handling suspended solids or viscous media.
ZFA Valve strictly executes the API598 testing standard, performing 100% two-sided pressure testing for every valve produced to ensure maximum reliability and quality.
The standard size range covers DN40 up to DN2000, suitable for a wide range of pipeline dimensions and project applications.
Seals are available in Stainless Steel+STL, EPDM (up to 120°C), Viton (up to 200°C), PTFE (up to 200°C), and NBR (up to 90°C), accommodating varying chemical and thermal demands.
Actuation options include Manual Gear Box, Electric Actuators, and Pneumatic Actuators based on operational requirements.
