Introduction
Characteristics
Explosion proof electric V-shaped ball valve, equipped with 03 series actuator, does not require additional servo amplifier. It can be controlled by inputting (4-20mADC or 1-5VDC) signal and single-phase power supply to adjust parameters such as pressure, flow rate, temperature, liquid level, etc.
Product Features
- 1. Introducing German technology to design a simple structure, light weight, and low material cost, which is more economical than straight stroke regulating valves with the same flow capacity.
- 2. The integral valve body without any pipe joints is not affected by external forces from pipelines or bolts, and because the valve body has no pipe joints, the pressure resistant shell will not be affected by sudden pressure changes.
- 3. The leak proof and durable valve seat is lined with a PTFE cup or O-ring with a stainless steel inner core at its outer diameter. The valve seat is made of tungsten cobalt hard alloy with a larger cross-section, and the structure of the valve seat is further reinforced by an alloy corrugated spring.
- 4. Featuring a V-shaped valve body, it ensures precise control over the entire range even in low flow or high viscosity media.
- 5. When the valve is closed, a wedge-shaped shear effect is generated between the V-shaped notch and the valve seat, which has both self-cleaning function and can prevent the core from getting stuck. It is particularly suitable for pipeline scaling and freezing, fluids containing fibers, slurry fluids, high viscosity fluids, and fluid control applications containing polymers, particles, crystals, and other fluids.
Technical Parameter
Specifications
| Nominal Diameter DN (mm) | 25 - 400 | ||||
|---|---|---|---|---|---|
| Nominal Pressure PN (Mpa) | 1.6 - 6.4 | ||||
| Nominal Pressure Ps (Mpa) | Strength Test | 2.4 - 9.6 | |||
| Sealing Test | 1.76 - 7.0 | ||||
| Material/Code | C | P | R | ||
| Main Parts | Valve Body | WCB | ZG1Cr18Ni9Ti | ZGOCr18Ni12Mo2Ti | |
| Ball Stem | 2Cr13 | ZG1Cr18Ni9Ti | ZGOCr18Ni12Mo2Ti | ||
| Valve Stem | 2Cr13 | 1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti | ||
| Sealing Ring | Polytetrafluoroethylene, Stainless Steel, Hard Alloy | ||||
| Packing | Polytetrafluoroethylene, Flexible Graphite | ||||
| Applicable Working Conditions | Applicable Medium | Water, Steam, Oil | Nitric Acid | Acetic Acid | |
| Applicable Temperature | -28 - 400°C | -28 - 500°C | |||
| Connection Method | Wafer Type, Flange Type. Flanges comply with JB79 - 59 standard. | ||||
(The dotted part is a simulation. The control box is not included in the switch type.)
Outline Parameters and Connection Dimensions: (Unit: mm)
| Nominal Diameter DN | Dimensions (mm) | ||||||
|---|---|---|---|---|---|---|---|
| A | ΦD | H1 | H2 | H | F | F1 | |
| 15 | 62 | Φ64 | 74 | 75 | 390 | 161 | 40 |
| 20 | 62 | Φ64 | 74 | 75 | 390 | 161 | 40 |
| 25 | 62 | Φ64 | 74 | 75 | 390 | 161 | 40 |
| 32 | 62 | Φ78 | 80 | 75 | 400 | 188 | 40 |
| 40 | 62 | Φ82 | 85 | 75 | 405 | 188 | 40 |
| 50 | 75 | Φ100 | 87 | 95 | 430 | 188 | 40 |
| 65 | 80 | Φ120 | 105 | 115 | 460 | 188 | 40 |
| 80 | 100 | Φ131 | 115 | 125 | 520 | 268 | 40 |
| 100 | 115 | Φ158 | 125 | 125 | 530 | 268 | 40 |
| 125 | 130 | Φ180 | 140 | 155 | 570 | 268 | 40 |
| 150 | 160 | Φ216 | 153 | 165 | 600 | 268 | 40 |
| 200 | 200 | Φ268 | 200 | 195 | 680 | 268 | 40 |
| 250 | 240 | Φ325 | 225 | 225 | 730 | 268 | 40 |
Valve Installation & Maintenance
Valve Installation:
(1) Before installation, check that the product model, tag number, and specifications match the requirements. Inspect the entire valve for missing or loose parts.
(2) Prior to installation, clean the pipeline. Ensure there is sufficient straight pipe section at the valve inlet and install a filter. When connecting the valve body to the pipeline flanges, ensure coaxiality.
(3) Thoroughly clean the pipeline before installing the valve.
(4) The installation site should ensure the safety of personnel and equipment, facilitating operation, disassembly, and maintenance.
(5) The valve should be installed vertically upright on horizontal pipelines. If necessary, it can be installed at an angle, but horizontal installation should be avoided. For occasions with heavy valve weight or vibration, use a support frame.
(6) The medium flow direction must align with the arrow on the valve body. The air supply should be dry and oil-free. The valve should be used in environments with temperatures ranging from -20℃ to 55℃.
(1) Before installation, check that the product model, tag number, and specifications match the requirements. Inspect the entire valve for missing or loose parts.
(2) Prior to installation, clean the pipeline. Ensure there is sufficient straight pipe section at the valve inlet and install a filter. When connecting the valve body to the pipeline flanges, ensure coaxiality.
(3) Thoroughly clean the pipeline before installing the valve.
(4) The installation site should ensure the safety of personnel and equipment, facilitating operation, disassembly, and maintenance.
(5) The valve should be installed vertically upright on horizontal pipelines. If necessary, it can be installed at an angle, but horizontal installation should be avoided. For occasions with heavy valve weight or vibration, use a support frame.
(6) The medium flow direction must align with the arrow on the valve body. The air supply should be dry and oil-free. The valve should be used in environments with temperatures ranging from -20℃ to 55℃.
Valve Maintenance:
(1) Cleaning the Valve: For general media, cleaning with water is sufficient. For media harmful to health, first understand their properties and then select an appropriate cleaning method.
(2) Disassembly: Remove rust from exposed rusted parts first. Before derusting, protect the machined surfaces of precision parts such as the valve seat, valve plug, valve stem, and push rod. Use special tools when disassembling the valve seat.
(3) Valve Seat: Minor rust or wear on the sealing surface can be repaired by machining. If damage is severe, replace the seat. However, both repaired and replaced hard sealing surfaces must be lapped.
(4) Valve Stem: If the surface is damaged, it must be replaced.
(5) Damage to Push Rod, Guide, and Sealing Surfaces: Reverse-acting actuators must be replaced; direct-acting actuators can be reused after proper repair.
(6) Compression Spring: If there are cracks or other defects affecting strength, replace it immediately.
(7) Wear Parts: Packing, gaskets, and O-rings must be replaced entirely during each maintenance. Check the valve plug and diaphragm for cracks, aging, or corrosion that may cause future failures. Decide whether to replace them based on inspection results, but the diaphragm service life should not exceed 2-3 years.
(8) When reassembling the valve, ensure alignment. Tighten bolts diagonally and lubricate sliding parts. After reassembly, debug the valve according to the factory test items and methods. During this period, accurately adjust the packing compression force and the valve plug closing position.
(1) Cleaning the Valve: For general media, cleaning with water is sufficient. For media harmful to health, first understand their properties and then select an appropriate cleaning method.
(2) Disassembly: Remove rust from exposed rusted parts first. Before derusting, protect the machined surfaces of precision parts such as the valve seat, valve plug, valve stem, and push rod. Use special tools when disassembling the valve seat.
(3) Valve Seat: Minor rust or wear on the sealing surface can be repaired by machining. If damage is severe, replace the seat. However, both repaired and replaced hard sealing surfaces must be lapped.
(4) Valve Stem: If the surface is damaged, it must be replaced.
(5) Damage to Push Rod, Guide, and Sealing Surfaces: Reverse-acting actuators must be replaced; direct-acting actuators can be reused after proper repair.
(6) Compression Spring: If there are cracks or other defects affecting strength, replace it immediately.
(7) Wear Parts: Packing, gaskets, and O-rings must be replaced entirely during each maintenance. Check the valve plug and diaphragm for cracks, aging, or corrosion that may cause future failures. Decide whether to replace them based on inspection results, but the diaphragm service life should not exceed 2-3 years.
(8) When reassembling the valve, ensure alignment. Tighten bolts diagonally and lubricate sliding parts. After reassembly, debug the valve according to the factory test items and methods. During this period, accurately adjust the packing compression force and the valve plug closing position.
Ordering Instructions
When placing an order, please fill in the Specification Sheet or specify the following information:
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If the model has not been selected before ordering, please provide us with the operating parameters:
(1) Nominal diameter DN (mm);
(2) Nominal pressure (MPa or bar);
(3) Fluid properties (including medium temperature, viscosity, or acidity/alkalinity);
(4) Pressure before and after the valve (pressure differential);
(5) Requirements for flow characteristics;
(6) Materials of valve body and valve core;
(7) Connection type;
(8) Driving method (provide air supply pressure, driving voltage);
(9) Supporting accessories (for pneumatic valves, it is recommended that users install an air filter triplet and a 2-position 5-way solenoid valve);
(10) On-site working conditions. -
If the product model of our company has been selected by the design unit, please order directly from our production department according to the model;
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When the application occasion is very important or the pipeline is relatively complex, please provide the design drawings and detailed parameters as much as possible, and our experts will review and check them for you.
