The ACBV Series is a nickel-plated steel muffler that can be used for gearboxes and valve ports. 10-32 UNF threads and 1/16", 1/8", 1/4", 3/8", 1/2", 3/4" and 1" male NPT threads with a standard 40 micron sintered Bronze filter. 10 or 90 microns optional. Also available with female 1/8", 1/4", 3/8" and 1/2" NPT threads. The operating pressure is 300 psi and the working temperature range is 35ºF to 300ºF.