Replacement of the mechanical seal of the pump Allweiler CTWH80-315/11 U3.3A-K1-W110

Pumps of a well-known manufacturer Allweiler ALLHEAT are intended for the circulation of heat carriers such as grease or hot water at high temperatures (water up to 207°C or thermal oil up to 350°C).

In particular, the NTWH/CTWH series pumps are single-stage horizontal centrifugal pumps with optimized bearing support, with spiral casing. Thanks to the long cooling section, no additional cooling is required. The massive slide bearing is pumped fluid lubricated, available in SSiC/SSiC or carbon/steel. The large area of the specially designed mechanical seal chamber prevents dry running. Before sealing the shaft, a safety gland and the following throttle section are installed.

The following shaft seals are used in these pumps:

Uncooled, balanced or unbalanced, according to DIN 24 960.

Mechanical seal

Product code U2.11A - balanced,

Product code U3.3A - unbalanced (Burgmann 951534 037797000 AQ1VGG).

Materials: moving ring - graphite A, counter ring - SiC, silicon carbide Q, spring - CrNiMo steel, sealing rings - fluorine rubber (FPM) V.