PTFE chemical valves

12/01/1998

PTFE chemical valves

These large-diameter (14 through 24 in.), high-performance PTFE butterfly valves have been added to the Series 22/23 line in both wafer and lug bodies, and offer the same chemical resistance of PTFE seats and encapsulated discs as the previously available 2 through 12-in. sizes. The bi-directional pressure rating for the large sizes is 150 psi (10 bar), and the temperature range is ?40 to 392?F (?40 to 200?C). The new size range also features the same energized stem sealing system that fully isolates the valve body and stem from the line media, creating a bubble-tight shutoff with high Cv values. The system is simple and reliable, eliminating high-maintenance components such as the large metal springs found in typical PTFE valves. Series 22/23 valve materials include PTFE, conductive PTFE, UHMWPE, stainless steel, and special alloys. Bray Valve & Controls, Houston, TX; ph 281/894-5454, fax 281/894-9499, e-mail [email protected], www.bray.com.