Should the catalog Cv value be used to size valves and regulators?  This is a common question.  Cv is suitable for sizing valves, but it is not recommended for regulators.  … Read more

Background The evolution of pressure regulators for the fledgling semiconductor industry dates back to the 1980’s. General industry regulators used for applications such as welding were made from 316 stainless  … Read more

A common question is why does a seat material, such as PCTFE, have different ratings depending upon the device? The temperature and pressure ratings of a material utilized for a  … Read more

AP Tech’s global distributors and factory support team are available to help you configure AP Tech products based on your specific application. But, did you know you can also configure  … Read more

The AP Tech KT series of high-pressure regulators feature maximum operating pressures up to 10,000 psig (690 bar, 69 Mpa).  All the KT series regulators (KT 9, KT 10, KT  … Read more

AP Tech provides product lead time guidelines for the entire range of AP Tech products in a single time span.  This delivery guideline can be useful for overall awareness, but  … Read more

Why is there a vacuum inlet pressure rating on a positive pressure regulator? AP Tech positive pressure regulator inlet pressure rating generally ranges from vacuum to a specified positive pressure,  … Read more

Why are tied diaphragm regulators limited on maximum outlet pressure? Tied diaphragm regulators physically attach the poppet (internal valve) to the sensing element (generally a diaphragm) for positive shut off.  … Read more

Fluorine (F2) gas handling is of special concern. F2 is a corrosive, toxic and highly reactive oxidizer requiring special care and handling beyond what is typical for other specialty gases.  … Read more

Of all the gases used in semiconductor manufacturing, Diborane (formula B2H6), is the most challenging for cylinder gas regulator reliability.   Diborane is normally supplied as a mixture with a balance  … Read more