Straight female to male BSP parallel thread adaptor.
Parkers K series adapters are manufactured to meet BS5200 standards and designed to seal with BSP
Hose swivel connectors. Parkers K4 adapter series can be used with Parker D9/92, B1, B2 and B4 adapters. Straight fittings can also be used an adaptor with ISO 1179-1 / DIN 3852 ports by using a bonded seal.

Visible bite of progressive ring helps prevent blow-off
Excellent sealing capacity when used in various applications including vacuum and hydraulic systems
Stress evenly distributed throughout out minimising concentration at the bite point
Compact overall dimensions make EO fittings ideal or confined spaces

For adaptors of unequal sizes then the lower pressure rating is applicable.
K4 adapters are not interchangeable with JIS P4 fittings.

Hydraulic systems can work at high pressures, and fittings and adaptors can be subjected to extreme loadings such as vibration and uncontrolled pressure peaks. When choosing fittings or adaptors careful attention should be given to the technical specifications.