Knife Gate Valve 104
DN50-1000 PN10-16
Own production
Certificates and full package of documents
Production time from 20 days
Technical Specifications
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Nominal diameter — DN 50-1000
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Nominal pressure — PN10-16
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Medium temperature — -30 °C ... +200 °C
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Types of Valve End Connections — Wafer, lug
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Leakage Class — «А»
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Mounting Position — Any, except for downward-driven devices
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Types of Control — — manual (lever) — manual (handwheel)— manual (gearbox)— pneumatic actuation — electric actuation
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Warranty Period — 12 months
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Average Service Life — 2500 cycles
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Guaranteed Service Life — Not less than 1000 cycles
Technical Drawings and Dimensions
Nominal Pressure PN10
Basic Dimensions Table
| DN | D, mm | D1, mm | D2, mm | L, mm | n-ød |
|---|---|---|---|---|---|
| 50 | 165 | 125 | 102 | 48 | 4-M16 |
| 65 | 185 | 145 | 122 | 48 | 4-M16 / 8-M16 |
| 80 | 200 | 160 | 138 | 51 | 8-M16 |
| 100 | 220 | 180 | 158 | 51 | 8-M16 |
| 125 | 250 | 210 | 188 | 57 | 8-M16 |
| 150 | 285 | 240 | 212 | 57 | 8-M20 |
| 200 | 340 | 295 | 268 | 70 | 8-M20 |
| 250 | 395 | 350 | 320 | 70 | 12-M20 |
| 300 | 445 | 400 | 370 | 76 | 12-M20 |
| 350 | 505 | 460 | 430 | 76 | 16-M20 |
| 400 | 565 | 515 | 482 | 89 | 16-M24 |
| 450 | 615 | 565 | 532 | 89 | 20-M24 |
| 500 | 670 | 620 | 585 | 114 | 20-M24 |
| 600 | 780 | 725 | 685 | 114 | 20-M27 |
Tabular values for diameters DN700–DN1000 and for pressure PN16 are available upon request
Product Description
Knife Gate Valve Model 104 is equipped with a dismountable, two-piece body and a U-shaped seat.
During valve opening, the seal conforms to the internal contour of the body, ensuring full flow-through without stagnation zones. This design prevents fine abrasive particles from entering the valve’s “gate pocket,” resulting in high cycling performance and long service life.
Design Features:
- End seal providing bi-directional tightnes
- Two-piece dismountable body
- Wide selection of body and sealing materials
- During valve opening, the seal adapts to the body cross-section, ensuring unrestricted flow without stagnation areas
Working Media:
- Water, steam, condensate
- Alkalis
- Acids
- Abrasive contaminants
- High-temperature gases
- Petroleum products
Body Materials:
🔹 Ductile Iron
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EN-GJS-400-15 / GGG40
🔹 Carbon Steels
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A216 WCB (1.0619, GP240GH)
🔹 Stainless Steels (Corrosion-Resistant)
- A351 CF8 (1.4308) / AISI 304 / A182 F304 (1.4301)
- A351 CF8M (1.4408) / AISI 316 / A182 F316 (1.4401)
- A351 CF3 (1.4306) / AISI 304L / A182 F304L
- A351 CF3M (1.4409) / AISI 316L (1.4404)
- AISI 316Ti (1.4571)
🔹 Special Steels (Duplex Steels)
- Duplex 2205 (UNS S31803/S32205, 1.4462)
- Super Duplex 2507 (UNS S32750 / 1.4410)
Seat Materials:
- EPDM
- NBR
- FKM (Viton)
- Metal-to-metal
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