Guaranty pressure withstand:1.5Mpa Max.pressure applied:1.0Mpa Environment and current temperature:5-60^oC All with protection cover Type..................................SFR-200........SFR-300.......SFR-400 Adapter diameter...........1/4Rc..............3/8Rc.............1/2Rc Press meter diameter..1/8RC.............1/8Rc..............1/8RC