Spirax Sarco BSA Bellows Sealed Isolation Valves – Zero Emission Globe Valves for Steam Systems

The Spirax Sarco BSA series bellows sealed isolation valves are engineered for applications demanding zero fugitive emissions and reliable long-term isolation. These valves eliminate stem seal leakage through a titanium-stabilised austenitic stainless steel bellows design, ensuring compliance with stringent global emissions legislation including EU Pressure Equipment Directive and UK Pressure Equipment Regulations.

The BSA range includes standard flat disc models for on/off isolation and BSA_T throttling plug variants that allow manual flow regulation. The throttling plug version can function as a basic control valve or bypass line substitute, featuring twin-ply bellows for extended service life and a locking screw to secure the valve in throttling position.

These bellows sealed valves are suitable for steam, condensate, gas, and liquid service across industries including oil and petrochemicals, food and beverage, pulp and paper, and pharmaceutical manufacturing.

Spirax Sarco BSA bellows sealed isolation valves are used across multiple industrial sectors:

- Steam and condensate systems – main isolation, equipment isolation, drain points - Oil and petrochemicals – process isolation where zero emissions are mandatory - Food and beverage – hygienic process isolation - Pharmaceutical manufacturing – clean steam and process media isolation - Pulp and paper – high-temperature steam system isolation - Chemical processing – corrosive media isolation (stainless steel variants)

Contact PC Engineering for pricing, availability, and technical support for Spirax Sarco BSA Bellows Sealed Isolation Valves. Call us or fill in our inquiry form — our engineers will respond within 24 hours.