Manual Vacuum Flapper Valve
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Main performance
Leakage rate: ≤ 1.3 × 10-9pa.m3/s;
Applicable pressure range: 1.3 × 10-5pa ~ 3 × 105Pa;
Working medium: air, water vapor, corrosive gas;
Working temperature: fluorogel – 30 ℃ ~ + 150 ℃;
Installation position: any;
Service life: ≥ 100000 times.
Working principle
Screw driven lifting valve plate, clockwise close and anticlockwise open.
Characteristic
Round design, compact structure, beautiful appearance, light weight, small mechanical wear, long service life;
The shaft seal adopts bellows seal;
Easy to install and use, safe and reliable operation;
Large conduction, maximize the efficiency of the pump;
Parts materials
Valve body, bonnet, stem, bellows, 304 or 316L center bracket, Viton “O” ring, clamp, welded joint, handle, etc
