Series GD (Inline) & G90 (90 Deg) swivel adaptors are designed to be mounted between a hose and a rigid component in order to allow and compensate occasional rotations, preventing hose damage.
Working temperatures with standard seals: -20 to +110 Deg C
Pressure 1 is the Max pressure in rotation.
Pressure 2 is the Static max pressure.
Manufacturers Ref:
GD - Inline Swivel Adaptor
G90 - 90 Degree Swivel Adaptor