How it works
Knife gate
Inductive end sensors
Construction
Parts and materials
The gate valve is designed for installation on the pipeline as a shut-off device and regulation of the working medium flow in water supply systems (except drinking water supply systems) and chemical industry.
Induction sensor is a non-contact type sensor designed to control the position of objects made of metals. It is not sensitive to other materials. Induction sensors are successfully and widely used to solve many problems of process automation in production. They are manufactured with normally open and normally closed contacts, but there are variants with both types of contact simultaneously. They work by changing the parameters of the magnetic field created by the inductance coil inside the sensor.
Technical characteristics of DNOVA GVKR1331N-2W-Fb-2P DN80 PN10 wafer gate valves, with a retractable spindle, body - cast iron GGG-40, seal - NBR, with pneumatic actuator, WENZ and inductive sensors LJ12A3-4-J/EZ 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 +110 |
Sketch of the dimensions and sizes of the gate valves DNOVA GVKR1331N-2W-Fb-2P DN80 Ru10 interflange, with a retractable spindle, body - cast iron GGG-40, seal - NBR, with pneumatic actuator, WENZ and inductive sensors LJ12A3-4-J / EZ 220V
Dimensions and sizes of DNOVA GVKR1331N-2W-Fb-2P DN80 PN10 wafer gate valves, with retractable spindle, body - cast iron GGG-40, seal - NBR, with pneumatic actuator, WENZ and inductive sensors LJ12A3-4-J/EZ 220V:
| Size | Du80 |
| DN, mm | 80 |
| L, mm | 51 |
| D, mm | 200 |
| D1, mm | 160 |
| D2, mm | 132 |
| D0, mm | 100 |
| H1, mm | 558 |
| G, inch | 1/2″ |
| N - Th | 8 – M16 |
| T, mm | 12 |
| Ød, mm | 18 |
| ⬤, mm | 2 |
| 〇, mm | 6 |
Sketch of parts and materials of gate valves DNOVA GVKR1331N-2W-Fb-2P DN80 Ru10 interflange, with a rising spindle, body - cast iron GGG-40, seal - NBR, with pneumatic actuator, WENZ and inductive sensors LJ12A3-4-J/EZ 220V
Table of parts and materials of gate valves DNOVA GVKR1331N-2W-Fb-2P DN80 Ru10 interflange, with a rising spindle, body - cast iron GGG-40, seal - NBR, with pneumatic actuator, WENZ and inductive sensors LJ12A3-4-J/EZ 220V:
| Item No. | Details | Material |
| 1 | Frame | cast iron GGG40 |
| 2 | Sealing ring | NBR |
| 3 | Gate | Stainless steel SS304 |
| 4 | Guide seal | PTFE |
| 5 | Stuffing | PTFE |
| 6 | Gland packing | WCB steel |
| 7 | Pin | steel 45 |
| 8 | Cartridge | WCB steel |
| 9 | Stock | steel 2Cr13 |
| 10 | Rack | steel Q235 |
| 11 | Switch | - |
| 12 | Pneumatic cylinder | - |
| 13 | Solenoid valve | - |
| 14 | Filter | - |
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 100x100 |
| A, mm | 112 |
| A1, mm | 125 |
| A2, mm | 70 |
| A3, mm | 50 |
| A4, mm | 104 |
| h3, mm | 10 |
| h4, mm | 10 |
| NM, mm | 4-M8 |
| nd, mm | 2-Ø8.2 |
| B, mm | 112 |
| B1, mm | 75±0.5 |
| B2, mm | 32±0.5 |
| C, mm | 33 |
| D, mm | Ø100 |
| E, mm | 21 |
| F, mm | 6.2±0.1 |
| S, mm | 100±1 |
| H, mm | 126 |
| H1, mm | 34±1 |
| H2, mm | 12±0.5 |
| H3, mm | 24.5±1 |
| d1, mm | 10.2 |
Technical parameters of inductive sensors LJ12A3-4
| Name | Meaning |
| Design | cylindrical |
| Sensor type | induction |
| Current, mA | 400 |
| Operating distance, mm | 4 |
| Trigger indication | There is |
| Degree of protection, IP | 67 |
- Body material
- Cast iron GGG40/EN-GJS-400-15
- Connection type
- Compact flanged
- Type of seal
- NBR
- 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.