Assembly & Maintenance

Assembly

High pressure tube

High pressure connections on the tube-side consist of an outer cone, which works as the sealing surface. Beside this there is a left-handed thread profile on the tube-side of the connection, which is needed to fix the collar. The opposite side of the connection the so-called fitting consists of an inner cone with a 2-5° bigger angle and an inner thread to fix the gland.

Instructions for pipe processing can be found here.

When assembling high pressure tubes, it is important to first push the gland on the tube and then to screw the collar (attention: left-hand thread) onto the tube so that about 2 threads to the cone remain free (Fig. 1).

This has the effect that the hole thread length of the gland is used (Fig. 2) and the relief holes remain free. Only in this way is a safe operation possible.

Figure 1: Assembly of the collar

The gland is now screwed into the fitting and given the specified tightening torque (see table 1).

Figure 2: Assembly of the gland 

Table 1: Width across flats and the specified tightening torque for the glands and collars

Muss Rohr gebogen werden, so ist darauf zu achten, dass der minimale Biegeradius den 5-fachen Rohraußendurchmesser nicht unterschreiten sollte, da anderenfalls die Lebensdauer beträchtlich verkürzt wird.

Plugs

Stopfen (Bild 4) dienen dem druckdichten Verschließen von Hochdruckanschlüssen. Zur Montage wird der Stopfen mittels Druckschraube in den Hochdruckanschluss geschraubt und mit vorgegebenem Drehmoment angezogen. Ein Druckring ist nicht erforderlich.

Figure 3: Plug in the gland

Maintenance

In case that the high-pressure connection is installed correctly but is not completely tight, the inner and outer cone of the connection can be reworked with the baromax reseating tool or the baromax coning tool.