ANSI Class300LB American standard swing flange check valve

Class300 American standard swing flange check valve

The H44W Class300 American standard swing flange check valve adopts a swing valve disc and flange connection structure. When the medium flows forward, push the valve disc to open. When the flow rate decreases or there is a trend of reverse flow, the valve disc closes to limit the medium reflux.

How to understand the pressure level of Class300?

Class 300 belongs to the level identification in the American standard pressure rating system and cannot be simply explained as a fixed 300PSI. The actual pressure and temperature ratings need to be determined based on the main material, design temperature, and specific standards used.

CF8 and CF8M materials

The current parameter column includes material options for CF8 corresponding to 304 and CF8M corresponding to 316L. The actual material selection should be determined based on the medium, corrosiveness, design temperature, pressure, and project material requirements, and the applicable conditions of one material should not be applied to all configurations.

Valve disc and seal

Forward differential pressure opens the swing disc, while a reverse-flow tendency closes it. Closing response, allowable leakage and sealing arrangement depend on the specific valve design and test conditions.

Class150 product can be referred toClass150 stainless steel American standard swing check valveClass600 product can be referred toClass600 American standard swing check valveSee all productsCheck valve manufacturer column。

Frequently Asked Questions

Is Class300 under work pressure? 300PSI?

No. Class 300 is a pressure rating name, and the specific pressure and temperature capabilities need to be confirmed according to the corresponding standards based on the material and design temperature.

Can this check valve guarantee absolute zero leakage?

Cannot be summarized as' absolutely zero leakage '. The allowable leakage level and testing requirements should be confirmed according to specific product standards, sealing structures, and order technical conditions.

Can CF8 and CF8M be directly interchangeable?

It is not recommended to directly exchange, and the selection should be based on the corrosiveness of the medium, temperature, pressure, and project material specifications.