Products
Professional Manufacture Dn50 Dn800
Professional Manufacture DN50
Motorized butterfly Valve 4-20MA
Electric Control Flange butterfly Valve
Features
Ningbo Yuxin Pneumatic Valve Co., Ltd. is one of the leading professional manufacture dn50 dn800 manufacturers and suppliers in China. If you're going to buy cheap professional manufacture dn50 dn800, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
DN50 DN800 Electric Control Flange butterfly Valve
Product Overview
Utilizes centerline or double eccentric design, with sealing pairs made of stainless steel paired with nitrile rubber (NBR) or polytetrafluoroethylene (PTFE) for bidirectional sealing and near-zero leakage
Pinless connection between the disc and stem eliminates potential leakage points; spherical disc contour enhances sealing durability
Powered by compressed air, driven by double-acting or single-acting spring-return pneumatic actuators for 90° rotary motion (on/off or modulating control)
Main Component Materials
| Component | Material |
|---|---|
| Valve Body | Ductile cast steel + NBR, cast steel + NBR, stainless steel + NBR |
| Disc | Gray cast iron, ductile cast steel, cast steel, stainless steel, or custom materials |
| Stem | 2Cr13, stainless steel |
| Sealing Packing | O-rings, flexible graphite |
Key Technical Parameters
| Nominal Diameter (DN) | DN50–DN800 |
| Nominal Pressure (PN) | 0.6 MPa | 1.0 MPa | 1.6 MPa |
| Seal Test Pressure | 0.66 MPa | 1.1 MPa | 1.76 MPa |
| Strength Test Pressure | 0.9 MPa | 1.5 MPa | 2.4 MPa |
| Temperature Range | NBR: -30°C to +80°C |
| Applicable Media | Water, air, natural gas, oil, and mildly corrosive fluids |
| Leakage Rate | Complies with GB/T 13927-92 standard |
| Actuation Method | Pneumatic |
| Actuator Series | GT, AT, AW series (single/double-acting pneumatic actuators) |
| Control Mode | On/Off control, 4–20mA analog signal control |
Actuator Technical Parameters
| Actuator Model | GT, AT, AW series (single/double-acting pneumatic actuators |
| Air Supply Pressure | 0.4–0.7 MPa |
| Air Port Size | G1/4", G1/8", G3/8", G1/2" |
| Ambient Temperature | -30°C to +70°C |
| Actuation Type | Single-acting or double-acting |
| Optional Accessories | Positioners, solenoid valves, air filter regulators, lock valves, limit switches, position transmitters, handwheel mechanisms, etc. |
Why choose Us?
Excellent Low-Pressure Sealing: Elastic sealing materials (rubber or fluoroplastics) tightly conform to the disc under pressure, achieving zero leakage with leakage rates below industry standards
Material Versatility: Seal options include EPDM, NBR, PTFE, etc., offering resistance to corrosion, chemicals (acids, alkalis, salts), and compatibility with water treatment, chemical, and food-grade hygiene applications
Rapid Actuation: Pneumatic actuators enable 90° disc rotation with response times <1 second, ideal for frequent operation or emergency shutoff
Accurate Flow Regulation: Near-linear relationship between disc opening and flow rate, combined with positioners, allows 0°–90° stepless adjustment for precise control
Minimal Flow Resistance: Fully open disc aligns with the pipeline, reducing flow resistance to 1/5–1/3 of gate valves, lowering pump energy consumption and long-term operational costs
Easy Maintenance: Modular design enables quick seal replacement without specialized tools, minimizing downtime
Multi-Industry Adaptability: Suitable for water treatment, chemicals, food/beverage, pharmaceuticals, etc., with a wide temperature range (-40°C to 200°C)
Extended Lifespan: Stainless steel or alloy valve body with aging-resistant seals; hard-seal variants withstand high pressure (up to 10 MPa) and >50,000 cycles
Lightweight Construction: 50%–70% lighter than traditional valves, saving space in dense piping systems or confined areas
Versatile Mounting: Supports wafer-type, flanged, and other installations for complex pipeline layouts
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