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China Lever Operated Knife Gate Valve Suppliers - Durable Factory Products for Slurries and Bulk Solids
Product Details
They feature a knife-edged gate that slices through solid-containing media and a manual lever actuator which provides quick open/close control when automation or power actuation is not necessary.
These valves are typically wafer-style or lug-style, fitting compactly between flanges, and they excel in applications where low pressure sealing and reliable shut-off are required without complex actuation.
Key Features
🖐️
Manual Lever Actuator
🔪
Knife-Edge Gate
⚙️
Wafer-Style Compact Body
🛡️
Durable Materials
Specification
Parts & Materials
| No. | Parts | Materials |
| 1 | Body | CF8 |
| 2 | Seat | EPDM |
| 3 | Disc | SS304 |
| 4 | Packing | PTFE |
| 5 | Gland | CF8 |
| 6 | Shoring | Q235 |
| 7 | Stem | 2Cr13 |
| 8 | Yoke | Q235 |
| 9 | Level | Q235 |
| 10 | Bolt | B8M |
Dimensions
| CONNECT METHOD & CRITERIA | FLANGE TYPE DIN2632 | |||||
| STRUCTURE DIMENSIONS \ DN | DN200 | DN250 | DN300 | DN350 | DN400 | DN450 |
| H | 809 | 946 | 1118 | 1282 | 1441 | 1587 |
| S | 300 | 300 | 300 | 450 | 450 | 450 |
| K | 295 | 350 | 400 | 460 | 515 | 565 |
| N | 4 | 4 | 4 | 6 | 6 | 6 |
| N1 | 4 | 8 | 8 | 10 | 10 | 14 |
| A | 20 | 20 | 20 | 20 | 24 | 24 |
| W | 60 | 70 | 80 | 96 | 100 | 106 |
| Operating Pressure P (bar) | 10 | 8 | 6 | 4 | 4 | 3 |
Frequently Asked Questions
Q
What is a knife gate valve with a manual lever actuator used for?
A knife gate valve with a manual lever actuator is used for quick open/close control of media flow — particularly in applications involving solid-containing or slurry media — without requiring automation or power actuation.
Q
What is the difference between wafer-style and lug-style knife gate valves?
Wafer-style valves are clamped between two flanges using through-bolts and are more compact and cost-effective. Lug-style valves have threaded inserts on both sides, allowing them to be bolted independently to each flange, which is useful for dead-end service or when one side of the pipe needs to be removed.
Q
What materials are used in the construction of this knife gate valve?
The valve body and gland are made of CF8 (stainless steel casting), the seat uses EPDM for sealing, the disc is SS304 stainless steel, packing is PTFE, the stem is 2Cr13 stainless steel, and structural components such as shoring, yoke, and lever are Q235 carbon steel.
Q
What flange connection standard does this valve comply with?
This knife gate valve is designed to connect using the Flange Type DIN2632 standard, which is a European flange standard commonly used in industrial piping systems.
Q
What are the available sizes and their maximum operating pressures?
The valve is available in sizes from DN200 to DN450. Operating pressures range from 10 bar for DN200, down to 3 bar for DN450. Larger nominal diameters correspond to lower maximum operating pressures due to structural limitations.
Q
Why is EPDM used as the seat material in this valve?
EPDM (Ethylene Propylene Diene Monomer) is chosen as the seat material because of its excellent resistance to water, steam, and many chemicals. It provides a reliable low-pressure seal, is highly durable in outdoor and moderate-temperature environments, and offers good elasticity for consistent shut-off performance.
Product Packaging
01020304