Threaded diameter is 50 mm below the metal hose connector

Threaded diameter is 50 mm below the metal hose connector to withstand high working pressure in the case of multi-threaded to the main thread when tightened after the two connectors on the inner and outer taper surface closely with a hermetic seal. Cone angle is generally 60 degrees, 74 degrees is also useful. The structure, good sealing, but the installation must ensure two countertop concentricity. In order to solve Hydraulic tube fittings  engineering often seen repeated demolition, installation and easy concentric and other issues, can also be designed as conical connector mating with the ball. Flange disc diameter of 25 mm above the metal hose joint, to withstand normal working pressure in the case in the main flange disc (see Figure 2-5c). It fit the form of tongue and groove seal. Rotating a radial direction, but also axially slidable flange looper tension force of the fastening bolts to connect two bodies. This structure sealing performance is good, but difficult process, the sealing surface is easy to bruise. Quick release is required for special occasions, you can tighten the bolts through the holes cut open, made ​​of quick-release flange.