AB Cocks

parallel cock plug with an open bore, turns through 90˚ inside an ‘elastic’ graphite packing sleeve. This offers the following advantages:-

Immediate opening/shutting: only 90° rotation
Large sealing surface guarantees excellent sealing across the ports and to the atmosphere – hence no false instrument readings
Service in line – packing sleeve can easily be changed with valve in line
Cock operation in throttle position is possible and can be used in blow-down lines
Simple construction (only one moveable part) ensures uninterrupted operation
No jamming through corrosion
Less likely to block with slurries or dirt particles due to open through bore

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