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Valves: forged and cast high pressure valves: control, stop, check, blow down, globe, gate, ball, piston, bellows sealed, instrument
Level gauges: magnetic level gauges, glass level gauges: transparent, reflex, bicolor
Cesare Bonetti - BONT - CMI Pasquini

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Last Update
06-02-2008

BONT ® HTB and RSS/RSSA ball valves
tested and approved according
Technical Instruction on Air Quality Control
Nr. 3.1.8.4  (TA-Luft) up to 427 °C (800 °F)

The Cesare Bonetti "HTB" Ball Valve for high temperature and high pressure applications as well the RSS & RSSA boiler blow down ball valves have been "TA-Luft" tested and certified in compliance with requirements of Technical Instruction on Air Quality Control Nr. 3.1.8.4  (TA-Luft).

Test has been third party witnessed by a qualified TÜV Inspector.

After 1000 cycles at ambient temperature and 500 cycles at 427 °C (800 °F), BONT®  "HTB, RSS & RSSA" standard valves shaft seal system demonstrates its quality and superior design features meeting TA-Luft requirements.
Test temperature has been limited to 427 °C (800 °F)  due to valve body material (ASTM A105).

Performed tests demonstrate that standard HTB, RSS and RSSA BONT® valves  are  products meeting together "Fire Safe" and "TA_Luft" prescriptions

Test Report

Test object: Static-dynamic Graphite shaft adjustable seal TA-Luft-assembly.gif (8389 byte)
Valve: BONT® HTB ball valve with pneumatic actuator
Actuation sequence: 4 complete operation per min (90° + 90°path)
Operation pressure  & media: 20 bars / Nitrogen
Leakage test pressure & media: 20 bars / Helium 4.6 (99.996%)
Test device: Helium  mass spectrometer "VARIAN" type 258T
Notes Valve Temperature
°C		 Number of Cycles

Pressure
barg

 Acceptable leakage value:
mbar l/(s m)		 Checked leakage value:
mbar l/(s m)
22 0 1 1.0 x 10 -4 1.1 x 10 -7
22 0 20 1.0 x 10 -4 0.5 x 10 -7
22 200 20 1.0 x 10 -4 6.5 x 10 -5
22 400 20 1.0 x 10 -4 6.0 x 10 -5
22 600 20 1.0 x 10 -4 6.0 x 10 -5
22 800 20 1.0 x 10 -4 6.2 x 10 -5
22 1000 20 1.0 x 10 -4 6.5 x 10 -5
Heating 427 1000 6 1.0 x 10 -2 1.3 x 10 -4
427 1000 20 1.0 x 10 -2 2.0 x 10 -3
427 1100 20 1.0 x 10 -2 1.5 x 10 -3
Air cooling 22 1100 20 1.0 x 10 -2 2.7 x 10 -3
Heating 427 1200 20 1.0 x 10 -2 1.9 x 10 -3
Air cooling 22 1200 20 1.0 x 10 -2 4.0 x 10 -4
Heating 427 1300 20 1.0 x 10 -2 1.9 x 10 -3
Air cooling 22 1300 20 1.0 x 10 -2 3.5 x 10 -3
Heating 427 1400 20 1.0 x 10 -2 1.3 x 10 -3
Air cooling 22 1400 20 1.0 x 10 -2 3.2 x 10 -3
Heating 427 1500 20 1.0 x 10 -2 1.4 x 10 -3
Air cooling 22 1500 20 1.0 x 10 -2 3.5 x 10 -3
Admitted shaft packing
retightenings during test		 2 Shaft retightenings
made during test		 None

Go to BONT® HTB Ball Valve Catalogue
Go to BONT® RSS-RSSA Ball Valve Catalogue
 

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