Welded metal bellows seals are constructed by welding a series of diaphragms
together.
The bellows unit remove the blocked condition for spring and provides flexibility
to the seal face in addition to improve the seal face wear.
BWL
BWH
Available Types :
BWL :
●
Used in water and weak corrosive liquid with SUS316 or SUS316L. With
Hastelloy-C,
can work
smoothly in high corrosive liquid.
●
Angle of bellows section is 45 degree to relieve stress and provide longer
seal life.
●
Operation limit
Temperature : -75℃~+200℃ depending on material used
Pressure : up to 300 psig
Speed : up to 25m/s/4500 fpm
BWH:
●
Used extensively in chemical industries, especially in high temperature
environment.
●
Enclosed grafoil ring and double nested bellows diaphragms.
●
Angle of bellows section is 45 degree to relieve stress and provide longer
seal life.
●
Operation Limit
Temperature: -75℃~+430℃ depending on material used
Pressure : up to 300psig/ 1000 psig (double-nested diaphrams)
Welded Metal Bellows :
