UNION RHB

UNION RHB > RHB

Union RHB is designed to work at 400°C and high rotation speed. Such performance can be reached using two special seals with double balancing and with the interposition of a pressurized fluid for cooling of primary seal.

This fluid is circulated by a pumping and cooling group which continuously verifies the system's effectiveness and signals through visual and sound alarm possible variations from the set values.

These results are reached by using ball bearings with closed loop oil cooling. Oil sealing is obtained by two double balanced seals which guarantee the effectiveness of system even in case of electrical failure.

Double mechanical seals with pressurized barrier fluid avoid any leakage of the process fluid to atmosphere: in worst case the barrier fluid will leak into the process.

Quick Select Chart

TYPE MEDIA Pressure (Max.) Temperature (Max.)
Water Thermal Oil Steam Air BAR ° C
3/8" to 2" R         50 120
RH         50 180
RHB         25 400
21/2" to 6" R         13 120
RH         13 180
RHB         12 400

Recommended

Acceptable

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Materials:

SEAL CODE SEAL MATERIALS MEDIA MAX TEMPERATURE
B3 Grafite - Silicio - Viton WATER - AIR - DRY 120"
B4 Grafite - Silicio - Aflas WATER - AIR - DRY - STEAM 180"
C3 Tungsteno - Silicio - Viton DIRTY WATER 120"
C4 Tungsteno - Silicio - Aflas DIRTY WATER 180"
T4 Bronzo - Silicio - Aflas DIATHERMIC OIL 180"
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Size


Water


Oil

Fluid

Steam


Air

Pressure
(MAX)
bar

Temperature
(MAX)
°C

Speed

rpm

Da 3/8” a 2”

 
 
 
 

50

400

3000

Da 2-1/2” a 6”

 
 
 
 

13

400

1000

 
Recommended  
 
Acceptable  
 
Not Suitable