PTFE chemical valves

11/01/1998

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.For FREE info circle 000