How it works
Knife gate
Construction
Parts and materials
The gate valve is designed for installation on a pipeline as a shut-off device and for regulating the flow of the working medium in water supply systems (except for drinking water supply systems) and the chemical industry.
Pneumatic distributors are used for control in pneumatic systems with a NAMUR mating surface for installing distributors through through holes in the body. Electromagnetic control is carried out using voltage coils 12-AC, 12-DC, 24-AC, 24-DC, 110-AC, 220-AC. Depending on the model, distributors have one-way or two-way control. Pneumatic distributors with electromagnetic control have a wide range of models and include common types of switching for three (3/2) and five (5/2 and 5/3) linear pneumatic distributors. Intended for use with gate valves with a pneumatic cylinder. Application is also possible on other valves with a pneumatic drive.
Technical characteristics of the gate valves DNOVA GVKR3431M-1W-Fb-2P Dn50-400 Ru10 interflange, with a retractable spindle, body - WCB steel, seal - METAL, with pneumatic actuator, WENZ and pneumatic distributor 4V210-08 KUOIN 220V:
| Name | Meaning |
| Nominal pressure PN, bar | 10 |
| Connection type | interflange |
| Working medium | water |
| Control type | pneumatic drive |
| Application | water supply, heat supply, industry |
| Gate valve type | Gate valve |
| Working environment temperature, °C | from -30 to +400 |
Sketch of the dimensions and sizes of the gate valves DNOVA GVKR3431M-1W-Fb-2P Dn50-400 Ru10 interflange, with a retractable spindle, body - WCB steel, seal - METAL, with a pneumatic actuator, WENZ and a pneumatic distributor 4V210-08 KUOIN 220V
Dimensions and sizes of gate valves DNOVA GVKR3431M-1W-Fb-2P Dn50-400 Ru10 interflange, with a retractable spindle, body - WCB steel, seal - METAL, with pneumatic actuator, WENZ and pneumatic distributor 4V210-08 KUOIN 220V:
| Size | Dn50 | Dn65 | Dn80 | Dn100 | Dn125 | Dn150 | Dn300 | Dn400 |
| DN, mm | 50 | 65 | 80 | 100 | 125 | 150 | 300 | 400 |
| L, mm | 48 | 48 | 51 | 51 | 57 | 57 | 76 | 89 |
| D, mm | 165 | 165 | 200 | 220 | 250 | 285 | 445 | 565 |
| D1, mm | 125 | 145 | 160 | 180 | 210 | 240 | 400 | 515 |
| D2, mm | 99 | 118 | 132 | 156 | 181 | 211 | 370 | 480 |
| D0, mm | 100 | 100 | 100 | 100 | 100 | 125 | 160 | 200 |
| H1, mm | 417 | 460 | 510 | 600 | 628 | 780 | 1232 | 1528 |
| G, inch | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ | 1/2″ |
| N - Th | 4 – M16 | 4 – M16 | 8 – M16 | 8 – M16 | 8 – M16 | 8 – M20 | 12 – M20 | 16 – M24 |
| T, mm | 12 | 12 | 12 | 12 | 12 | 14 | 16 | 20 |
| Ød, mm | 18 | 18 | 18 | 18 | 18 | 23 | 23 | 27 |
| ⬤, mm | 4 | 4 | 4 | 4 | 4 | 4 | 6 | 10 |
| 〇, mm | - | - | 4 | 4 | 4 | 4 | 6 | 6 |
Sketch of parts and materials of gate valves DNOVA GVKR3431M-1W-Fb-2P Dn50-400 Ru10 interflange, with a rising spindle, body - steel WCB, seal - METAL, with pneumatic actuator, WENZ and pneumatic distributor 4V210-08 KUOIN 220V
Table of parts and materials of gate valves DNOVA GVKR3431M-1W-Fb-2P Dn50-400 Ru10 interflange, with a rising spindle, body - WCB steel, seal - METAL, with pneumatic actuator, WENZ and pneumatic distributor 4V210-08 KUOIN 220V:
| Item No. | Details | Material |
| 1 | Frame | WCB steel |
| 2 | Gate | Stainless steel SS304 |
| 3 | Guide seal | PTFE |
| 4 | Stuffing | PTFE |
| 5 | Gland packing | WCB steel |
| 6 | Rack | steel Q235 |
| 7 | Pin | steel 45 |
| 8 | Cartridge | WCB steel |
| 9 | Stock | steel 45+Cr |
| 10 | Switch | - |
| 11 | Head of the rack | cast iron GGG40 |
| 12 | Pneumatic cylinder | - |
| 13 | Solenoid valve | - |
| 14 | Filter | - |
| 15 | Wedge | WCB steel |
Technical parameters of SC pneumatic cylinders
| Name | Meaning |
| Model | SC |
| Design | double acting |
| Working environment | compressed air |
| Damping | adjustable |
| Working pressure range, bar | 1-9 |
| Operating temperature range, °C | from -5 to +70 |
Sketch of dimensions and sizes of SC pneumatic cylinders
Dimensions and sizes of SC pneumatic cylinders
| Model | SC 100x70 | SC 100x85 | SC 100x100 | SC 100x120 | SC 100x145 | SC 125x170 | SC 200x320 | SC 250x430 |
| A, mm | 112 | 112 | 112 | 112 | 112 | 140 | 220 | 270 |
| A1, mm | 125 | 125 | 125 | 125 | 125 | 155 | 260 | 220 |
| A2, mm | 70 | 70 | 70 | 70 | 70 | 85 | 140 | - |
| A3, mm | 50 | 50 | 50 | 50 | 50 | 60 | 100 | - |
| A4, mm | 104 | 104 | 104 | 104 | 104 | 130 | 226 | - |
| h3, mm | 10 | 10 | 10 | 10 | 10 | 15 | 20 | - |
| h4, mm | 10 | 10 | 10 | 10 | 10 | 15 | 20 | - |
| NM, mm | 4-M8 | 4-M8 | 4-M8 | 4-M8 | 4-M8 | 4-M10 | 4-M14 | - |
| nd, mm | 2-Ø8.2 | 2-Ø8.2 | 2-Ø8.2 | 2-Ø8.2 | 2-Ø8.2 | 2-Ø10.2 | 2-Ø14.2 | - |
| B, mm | 112 | 112 | 112 | 112 | 112 | 140 | 220 | 270 |
| B1, mm | 75±0.5 | 75±0.5 | 75±0.5 | 75±0.5 | 75±0.5 | 95±0.5 | 105±0.5 | 220±0.5 |
| B2, mm | 32±0.5 | 32±0.5 | 32±0.5 | 36±0.5 | 36±0.5 | 42±0.5 | 48±0.5 | - |
| C, mm | 33 | 33 | 33 | 33 | 33 | 40 | 50 | - |
| D, mm | Ø100 | Ø100 | Ø100 | Ø100 | Ø100 | Ø125 | Ø200 | Ø250 |
| E, mm | 21 | 21 | 21 | 21 | 21 | 30 | 40 | 65 |
| F, mm | 6.2±0.1 | 6.2±0.1 | 6.2±0.1 | 6.2±0.1 | 6.2±0.1 | 8.2±0.1 | - | - |
| S, mm | 70±1 | 85±1 | 100±1 | 120±1 | 145±1 | 170±1 | 320±1 | 430±1 |
| H, mm | 96 | 111 | 126 | 146 | 171 | 205 | 360 | 105 |
| H1, mm | 35±1 | 34±1 | 34±1 | 28±1 | 28±1 | 33±1 | 30±1 | - |
| H2, mm | 12±0.5 | 12±0.5 | 12±0.5 | 12±0.5 | 12±0.5 | 14±0.5 | 23±0.5 | 24±0.5 |
| H3, mm | 24.5±1 | 24.5±1 | 24.5±1 | 24.5±1 | 24.5±1 | 28.5±1 | - | - |
| d1, mm | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 12.2 | - | - |
| M, mm | - | - | - | - | - | - | M27x3 | M30x3.5 |
| H4, mm | - | - | - | - | - | - | - | 650 |
Technical parameters of the pneumatic distributor DNOVA 4V210-08 KUOIN
| Design | Spool-type |
| Test pressure (body strength test. Not for operation!), bar | 15 |
| Working pressure (recommended range for normal operation), bar | 1.5 ÷ 8 |
| Valve type | 5/2 five-port, two-position |
| Working fluid | purified air (40 µm filter fineness) |
| Effective cross-sectional area, mm2 | 16 (Cv = 0.89) |
| Operating temperature, °C | from -20 to +70 |
| Maximum actuation frequency | 8 cycles per second |
| Manual override | yes |
| Protection rating | IP 65 |
| Connection to pneumatic actuator | via pneumatic hoses |
| Surface mounting | via through holes in the housing |
| Body material | anodized aluminum |
| Exhaust port dimensions (vent to atmosphere) | 2 - G1/4” |
| Air outlet port size (to pneumatic actuator) | 2 - G1/8” |
| Air inlet port size (to pneumatic valve) | G1/8” |
| Response time, sec | 0.05 |
| Supply voltage, V | 220AC 24DC |
| Coil power | 220VAC – 5.5 VA 24VDC – 4.8 W |
| Weight, kg | 0.22 |
| Average service life, cycles | 10,000,000 |
- Body material
- Carbon steel
- Connection type
- Compact flanged
- Type of seal
- Metal
- Disc material
- Stainless steel AISI 304
- Limit switches
- No
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.
Total items
Product subtotal