Bellows Sealed Stop Valves

Masthead background


The Spirax SafeBlocTM is a double isolation solution, with a unique space-saving design, offering reduced installation time and fewer leak paths.

Faster and easier to install than a traditional double block and bleed assembly, the Spirax SafeblocTM has an innovative design which incorporates two bellows sealed isolation valves and a bleed port in one compact assembly.

Easy to use and commission, the Spirax SafeblocTM can be installed without pipework modifications, into the space left by an existing single isolation valve.

Technical Illustration

DBB3 Double Block and Bleed Bellows Sealed Stop Valve

The Spirax SafeBlocTM offers double isolation in the space of one valve, quick and easy installation and zero leakage.

Tech promo DBB3

Typical Installation


Product Brochure

document language reference number download
Applications Overview for the steam and condensate loop English SPB-1025-US Download PDF
Product Overview English SPB1027-US Download PDF

Technical Documentation


Spirax SafeBloc DBB3 Double Block and Bleed Bellows Sealed Stop Valve



reference number



Download PDF


We'll help you find the correct solution for your needs.