Sanitary quick-loading sampling valve is a valve used to obtain medium samples in pipelines or equipment. In many occasions where chemical analysis of medium samples is required, special sanitary sampling valves are often used. According to different working principles or performance during sampling, sanitary sampling valves are mainly divided into three types, including double-opening valves, flanged clamping valves and sanitary sampling valves with thermal insulation jackets.
1. Double opening valve
Double open valve is a commonly used sanitary sampling valve, usually composed of two connected ball valves, which is characterized by safe and stable sampling. During the sampling process, first close the A valve of the double open valve close to the equipment and the pipeline, then open the B valve to allow the medium to flow into the space between the two valves, then close the B valve and open the A valve, and place the sampling vessel in the sampling vessel. The mouth holds the sampling medium.
2. Flange clip valve
The principle of the flange clamp valve is to seal through the cone at the top of the valve stem and the cone hole of the valve seat. When sampling, use the handwheel to lift the position of the valve stem to separate the valve stem from the cone hole, so that the The medium can then flow into the external sampling vessel.
3. Sampling valve with insulation jacket
During the use of the sanitary quick-loading sampling valve, if it is necessary to use a thermal insulation jacket, it should be noted that during operation, the valve cannot be forcibly opened before the medium is completely melted, and the valve must be opened after the crystals in the valve are melted. , otherwise it is easy to cause safety accidents.
When using the thermal insulation jacket for the sanitary quick-loading sampling valve, be careful not to forcibly open the valve. If the valve cannot be opened, do not use the extension arm, which will cause the valve to be overstressed and cause the spool and valve to be damaged. The falling off of the rod, or the damage to the sampling part, leads to a safety hazard.
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