at present, there are a lot of stand-up exhaust valve, and so on quality has the very big disparity, so to master a certain method of judging the quality of exhaust valve is particularly important, then how should do?

a, PE material ( Raw materials) Gloss and transparency:

the gloss and transparency of Industrial Valves is higher, on behalf of the higher the purity of the PE material.

2, a one-way valve structure:

plastic cover, oil film, sealing adhesive ( The seal oil) , bottom cover, filter ( Suitable for the use of powdery materials) 。 The valve apart to see if lack of any raw material.

three, made from coffee beans test:

can do test with coffee beans. Put the coffee beans in a unidirectional exhaust valve bags, with different brewing some try every month. Observed in the process of brewing coffee powder, foam, foam and more dense, on behalf of the coffee bean XinXianQi in good condition. In addition, acid

flavour of the heavier is generally stale bread was bad.

the diameter of the four, the exhaust Industrial Valves error value:

the shape of the Industrial Valves is round, you can observe the whole whether the diameter of the vent valve is completely the same, whether there is a deformation, and so on and so forth.

5, made from fermented feed test:

encapsulate feed in unidirectional exhaust valve with different feed fermentation PE bag, behold a pack of secondary fermentation will happen cause mildew.

that's stand-up exhaust valve quality judgment method.

more stand-up exhaust valve information click: https://www. mechvalvechina。 com

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