BS DN20~65 union rubber joint advantages: 1.small size and light weight,easy to installation and maintanance 2.noise can be reduced and shock absorb 3.long service life 4.novel structure and favorable price NBR screwed rubber joint technical parameters: working pressureMPa(kgf/cm2 ) 1.0(10) deflection angle (a1+a2 )45° burst pressureMPa(kgf/cm2 ) 3.0(30) vacuumeKPa(mm/Hg) 53.3(400) applicable tempressure -15~115`C(for special conditions)-30~250`C applicable media water,sea water,hot water,air,compressure,air oil,acid,alkali,etc.