Crane of full bore
Appointment and scope

Cranes spherical from the ends under welding are intended for installation in quality of the locking device blocking streams of liquid and gaseous working environments on pipelines in systems of Paro - water - and gas supply, the enterprises of power system, in chemical, oil processing, gas and other industries.
Design

The crane is spherical folding. Full pass. Execution under welding. The welded case from carbonaceous steel. Freely floating sphere is condensed with ftoroplastovy saddles. The spindle, with protection against pushing out, is condensed with the ftoroplastovy rings clamped by the plug. Components of the case are condensed with laying. The control of the crane is made manually by turn of the lever on 90 °do an emphasis. Position of the lever is the index of opening closing of the crane. In open position of the crane the lever is located along a pipeline axis. Position of the crane at installation on the pipeline — any, with a stream of a working environment in any direction.
Technical characteristics

Working pressure, no more … … … … … ….1,6 MPas; 2,5 MPas; 4,0 MPas
Temperature of a working environment … … … … … … .ot -40 °C to +250 °C
Working environment … … … … … … … … … … … … … …. steam, water, gas, oil products and others
nontoxical and nonaggressive environments,
neutral to materials of details of the crane
Tightness class … … … … … … … … … …. And GOST 9544
Climatic modification … … … … … …. U1 GOST15150
Ambient temperature … … … not below - 40 °C
Quantity of running cycles … … … … … … not less than 10 000
Full service life … … … … … … … … … … not less than 10 years
Accession to the pipeline … … …. under welding
Management … … … … … … … … … … … … … … …. lever
Cranes are manufactured according to GOST 28343 (ISO7121)
Construction lengths … … … … … … … … …. GOST 28908, GOST 3706 (ISO5752)
The ends under welding according to GOST 16037