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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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Visitor number
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Last Update
06-02-2008 |
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BONT® "HTB" -
High Temperature
High Pressure Ball Valves
NEW!
up to 550 °C - 1022 °F
30.000 Cycles Maintenance Free |
BONT®
HTB ball valves:
Fire safe and TA-Luft tested |
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Click on the
image below to see the Fire test report |
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| Click on the image below to see the TA-Luft test
report |
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BONT® High Temperature and High Pressure
Ball Valves (world patented) incorporate a new worldwide patented and unique concept for
the body seats. After being given a goal to develop a ball valve capable of eliminating
all the problems associated with metal-to-metal seated ball valves in high temperature and
high pressure applications, our R & D department met this extreme challenge by
developing new body seal material that exceeded all expectations. For HT and HP
applications today, ball valve manufacturers supply hardened metallic seats.
Unfortunately, these hardened metallic seats do not provide tight shut off, and are
burdened with many disadvantages including: very high cost and very high operating torque.
Metallic seats are also subject to unavoidable loss of seat tightness due to scratches on
the ball surface created by any heavy particle carryover in the fluid being handled. High
pressure drops can also lead to erosion and cavitation of the ball. All these problems are
further compounded by the difficulties typically encountered during maintenance due to the
inability to perfectly match the surfaces of the ball with available spare seat parts in
order to attempt to re-establish tight shut off.
BONT® High Temperature and High Pressure
Ball Valves (BONT® HTB) incorporate a "semi-soft" seat design made
of metal/graphite compounds. This tried and well proven design offer several advantages
over metal-to-metal seats:
- Perfect seat tightness under working conditions
- Long seat life
- Continuos cleaning of the ball surface due to the
wiping action of the seat material
- Low operating torque even when compared to valves with
PTFE seats
- Suitable for use in any application where pure
graphite is permitted. The metal portion of the seat can be changed to accommodate any
application requirements
- Long life maintenance free for a minimum of 30,000
cycles
- Low cost
- Full bore, three piece design body design
 The original goal to design a superior ball valve has only been
reached after more than five years of research, development and testing under the most
severe conditions. Our experience with this seat material, also used in our well known BONT® Boiler Blow-Down and Blow off ball valves, has
been amply proven. Extensive testing has confirmed and verified its ability to withstand
the most difficult service conditions.
The use of a similar material in our easily
adjustable stem packing (the same as for our Piston Valves and HP globe valves),
guarantees proper tightness and no stem leakage making it a perfect complement to our BONT®
HP/HT Ball valves for severe service applications.
The valve is produced according ASME B16-34, B16-5, B16-11, B16-25, MSS SP 72, BS 5351, DIN 3239 Standards.
Size: Full Bore ½" to 2.½" - Reduced Bore ¾" to 3"
Temperature for continuous service: up to 550 °C - up to 1022 °F
FIRE SAFE according: API 6FA Second Edition 15.02.94,
API 607 Fourth Edition
BS 6775 part 2 and Apendix A
TA-Luft according: Technical Instruction on Air Quality Control Nr. 3.1.8.4
Rating: PN 40 DIN 2401 - ASME300
PN 100 DIN 2401 - ASME 600
Connections: Threaded NPT ASME B2.1
SW ASME B16.11 - BW ASME B16.25 - BW DIN 3229
Flanged according Eurepean Stds (UNI, DIN, AFNOR, etc.)
Flanged according to American Stds (ASME B16.5 - B16.10)
Go to H.T & H.P. Ball Valves Catalogue
(.pdf file 409 Kb)
[ PistonValves ] [ H P Forged Valves ] [ H P Cast Valves ] [ Bellows Valves ] [ BONT-HTB High Temperature ball valves ] [ BONT-WVE ball valves ] [ Blow Down Valves ] [ Instrument Valves ] [ 3-2 way Bypass System ] [ Custom Valves ]
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