hard seat wafer connected butterfly valve (metal to metal seat, can be driven by hand wheel, pneumatic or electric actuator)
Product Details:
| Standard or Nonstandard | Standard |
|---|---|
| Structure | Butterfly |
| Material | cast steel, stainless steel |
| Temperature of Media | Medium Temperature |
| Media | water,oil, steam, etc |
| Power | manual, pneumatic, hydraulic |
| Place of Origin | Shanghai, China (Mainland) |
| Brand Name | AoLi |
| Model Number | D373H |
Payment & Shipping Terms:
| Packaging Details: | exportation wooden box |
|---|---|
| Delivery Time: | within 10days |
Detailed Product Description
hard seat wafer connection butterfly valve
With the scientific and technological progress and product updates, demands for industrial valves have been a noticeable change. The use of butterfly valves has been from low water supply to high temperature and high pressure, wear resistance, corrosion resistance and other fields. In the petrochemical, metallurgical, mining, textile, energy and other systems, a large number of general cut off valves and regulating valves have been replaced by metal seal butterfly valve.
1. Structure and working principle
Metal seal butterfly valve is consist of such component parts as valve body, disc, flexible seat, stem, bearings, flexible metal composite gaskets, frame, drive mechanism. Material of its flexible seat is adopted stainless steel or titanium molybdenum,disc sealing surface butt-welded with SF3 or SF5 carbide hardfacing electrodes, and by heat treatment, has a good temperature resistance, wear resistance, corrosion resistance.
Sealing surface of butterfly valve is eccentric conical structure, which is formed by filting the spherical cross-section and three-dimensional seal lines. Seal is adopted the contact advanced sealing principle of flexible metal seal ring and disc spherical. Through the eccentric movement formed by disc rotation, and setting up ratio pressure with metal flexible ring, to achieve high performance parameters, to meet an ideal seal requirements .
When the valve with handle operation, rotating handle by clockwise to close, rotating counterclockwise to open.Disc opening set by the gear on indicator. When achieving the opening request, working position can be fixed by releasing the handle, to achieve the purpose of regulation.
When valve is adopted worm gear operation, clockwise rotation with hand wheel to close, and vice versa for the opening. Disc opening can be shown by arrow on top of worm gear.
When using pneumatic, electric, hydraulic drive mechanism, etc., please view the related driver instructions.
2. Characteristic performance
Nominal pressure PN | 0.6 Mpa | 1.0 Mpa | 1.6 Mpa | 2.5 Mpa | 4.0 Mpa | |
Test pressure (Mpa) | Shell | 0.9 | 1.5 | 2.4 | 3.8 | 6.0 |
Seal | 0.66 | 1.1 | 1.76 | 2.75 | 4.4 | |
Gas seal | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | |
Leakage | ≤0.2 * DNmm3/s (reverse leakage of bi-directional seal butterfly valve ≤0.4 * DNmm3/s) | |||||
Applicable temperature and medium | Carbon steel | -29~425oC ; water, steam, oil , etc. | ||||
Chrome Molybdenum-Vanadium steel | ≤ 520oC ; steam, smelting, energy, etc. | |||||
Stainless steel | -40~200oC ; corrosive medium of nitric acid, acetic acid, and urea, food stuff, etc. | |||||
Operation method | Handle, gear box, electric, pneumatic, hydraulic, etc. | |||||
Connection style | Flange, wafer, butt-weld, expansion | |||||
hard seat wafer connected butterfly valve (metal to metal seat, can be driven by hand wheel, pneumatic or electric actuator)
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Company Info
Shanghai AoLi Pump Valve Making Co., Ltd.
[China (Mainland)]
[Verified Member]
Province/State: Shanghai
Country/Region : China (Mainland)
Business Type:Manufacturer, Other
Online Postings: Products