Wholesale SS knife gate valve pneumatic operation flange type Suppliers, Manufacturer
Product Description
Technical Specifications
| Valve Type: | Flange knife gate valve | Structure: | Concentric |
| Standard: | API/EN/JIS | Workmanship: | Investment casting |
| Sealing Direction: | Bidirectional | Sealing Grade: | Zero leakage |
| Temperature: | -25°C < T < 425°C | Operation: | Pneumatic |
Characteristics
This flange type pneumatic stainless steel knife gate valve adopts integrated flange design for high pressure resistance and stable sealing. Made of 304/316 stainless steel, it delivers excellent anti-corrosion performance for acid, alkali and slurry media. The full straight bore prevents blockage of dust and sludge. Equipped with an explosion-proof pneumatic actuator, it supports fast remote automatic control for chemical, environmental and industrial high-pressure pipelines.
Key Advantages
1. Integrated Flange Design: Features higher pressure resistance and stable sealing performance. It avoids loosening and leakage under high pressure and strong pipeline tension, offering greater reliability than wafer and lug types.
2. Corrosion-Resistant Body: Full stainless steel (CF8/CF8M) construction provides superior anti-corrosion properties against acids, alkalis, and salt water, preventing rust and leakage effectively.
3. Non-Clogging Automation: Full straight bore prevents material accumulation and blockage. The explosion-proof pneumatic actuator ensures rapid, safe, and automated on-off pipeline operation.
Material Specifications
| Part Name | Material |
|---|---|
| Body, Up Bonnet | Ductile iron, Carbon steel, Stainless steel |
| Disc | Stainless steel |
| Stem | Stainless steel |
| Seal Ring | Rubber, PTFE, Stainless steel, Hard alloy |
Dimensions (mm)
| DN (mm) | L | D | D1 | D2 | H | N−M | D0 |
|---|---|---|---|---|---|---|---|
| PZ73X−10 / PZ73F−10 / PZ73H−10 / PZ73Y−10 | |||||||
| 50 | 48 | 165 | 125 | 102 | 285 | 4−M16 | 180 |
| 65 | 50 | 185 | 145 | 122 | 298 | 8−M16 | 180 |
| 80 | 51 | 200 | 160 | 138 | 315 | 8−M16 | 220 |
| 100 | 51 | 220 | 180 | 158 | 365 | 8−M16 | 220 |
| 125 | 57 | 250 | 210 | 188 | 400 | 8−M16 | 230 |
| 150 | 57 | 285 | 240 | 212 | 475 | 8−M20 | 280 |
| 200 | 70 | 340 | 295 | 268 | 540 | 8−M20 | 360 |
| 250 | 70 | 395 | 350 | 320 | 630 | 12−M20 | 360 |
| 300 | 76 | 445 | 400 | 370 | 780 | 12−M20 | 400 |
| 350 | 76 | 505 | 460 | 430 | 885 | 16−M20 | 400 |
| 400 | 89 | 565 | 515 | 482 | 990 | 16−M24 | 400 |
| 450 | 89 | 615 | 565 | 532 | 1100 | 20−M24 | 530 |
| 500 | 114 | 670 | 620 | 585 | 1200 | 20−M24 | 530 |
| 600 | 114 | 780 | 725 | 685 | 1450 | 20−M27 | 600 |
Application Scenarios
The flange knife gate valve is widely used in chemical high-pressure corrosive pipelines, sewage main pipes, pharmaceutical and food slurry systems, seawater desalination, mine slurry transportation, and power plant corrosive medium pipelines.
Packaging & Export
Standard export wooden case packaging ensures complete product protection and integrity during international transport.
Frequently Asked Questions (FAQ)
This valve is specifically designed for challenging environments with high suspended solids, such as mine slurry transportation, sewage mains, chemical processing lines, paper pulp, and power plant corrosive media.
The integrated flange design provides significantly better pipeline rigidity, higher pressure resistance, and prevents joint loosening or leakage under severe piping vibrations and thermal tension.
The precision investment cast disc and bidirectional sealing mechanism cut directly through thick media and solids, ensuring tight shutoff against the resilient or hard alloy seat without trapping particles.
Equipped with tailored seal materials (PTFE, Rubber, or Hard alloy), the valve reliably operates across temperatures ranging from -25°C up to 425°C.
It features an explosion-proof pneumatic actuator for rapid automated on-off control, capable of being integrated with limit switches, solenoid valves, and remote control systems.
