Spirax Sarco bellows sealed stop valves provide low-emission isolation for steam and industrial fluid systems where stem leakage must be minimised.
Bellows sealed stop valves are usually selected when leakage containment carries more weight than general shut-off economy. If the application can use simpler manual isolation, compare HV3 stop valves. Where the project instead favours quarter-turn automation and low pressure drop, continue into ball valves.
For the model-level route in this family, use BSA2T bellows sealed stop valve or BSA3T bellows sealed stop valve.
BSA2T is part of the Spirax Sarco BSA and BSAT bellows sealed stop valve range. It combines a ductile iron body with double bellows sealing to reduce external stem leakage risk while supporting dependable manual isolation in steam
BSA3T is the carbon steel branch of the Spirax Sarco BSA and BSAT bellows sealed stop valve range. It is used where dependable manual isolation, reduced external stem leakage risk and a higher pressure-class route matter in steam,
BSA1T is a cast iron, 16 bar bellows sealed stop valve with a throttling plug and locking device for manual isolation and limited throttling in steam, condensate, water, gas and compatible industrial fluid systems.
