Flomatic Valves has promoted these products / services:
Flomatic® Corporation introduces their new Model 508S6 Ball Check Valve; a simple, yet reliable 316 stainless steel check valve. Among others, it features a full-ported valve seat uniquely designed to allow a strong phenolic ball to seat on a Nitrile (Buna-N) seat. For vacuum or anti-flooding valve applications, an optional "floating" rather than "sinking" ball is used....
Flo-Trol® automatic flow control valves are designed to give constant flow over a wide pressure range. The internal controlling mechanism has no moving parts and consists only of a flexible orifice that varies with applied pressure maintaining a constant flow rate.