B1's tandem arrangement offers safety when workers perform service work on pipe assemblies - especially with media are under high pressure/temperature, or with hazardous media.
Models comprise two separate independent union bonnet valves in a single body. Valve head units are flange-mounted to the valve body with a union nut. Bore size on the valve seat is 11 mm. The sealing to atmosphere is performed by the nonrotating valve stem. This achieves a low actuating moment, reduces load on the sealing, and increases service life.
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