La description
FORGED TRUNNION BALL VALVE
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1.Forged ball valve feature
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Zhejiang Huaxia forged ball valve,the forging material can ensure
sufficient rigidity and strength under maximum rated operation
pressure  without inherent flaw of cast. Enough wall
thikness of separate body and adaptation of high strength tie
bolts are convenient for valve maintenance and sufficient to bear
the stress of pipe.The internal parts of valve are carefully
designed and selected to ensure  reliability under all kinds
of work condition.
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2.Anti-fire safe design
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When the trunnion ball valve be used normally,its sealed by seat
and ball surface,seat retainer sealed by O-ring and body,this is
soft sealed and reliable sealing.When the seat and O-ring are
burnt,the seat retainer and body will be sealed by expanded
graphite.Thus act anti-fire safe purpose.
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3.Anti-static device
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In order to prevent friction among ball,stem and PTFE that
generates static electricity which may light the combustibles and
explosives that cause an accident,in this ball
valve,static-conduction spring is set between the stem and the
ball,the stem and the body.Thus static electricity is conducted
to ground and system safety is secured.
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4.Free leakage of body Sealed construction
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The connective position of valve body and bonnet is double sealed
by gasket and O-ring,on this base,such factors as fire,high
temperature,shock and uneven opening or closing of the torque all
can't induce external leakage.
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5.Low torque in operation
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The self-lubricated bearings are installed at the friction of
stem,resulting in wear resistance,fiexibility of operation and
low torque.
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6. Double block&bleed(DBB)
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When ball is full open or close position,the transmitter
substance in center cavity of body can be released by drainage
and emptying devices.In addition,the over loaded pressure in the
center cavity of valve can be  released to low pressure end
by self relief seat.
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7.Emergency sealing
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Compound injection holes are designed and compound injection
valves are installed at locations of stem/cap and body support of
side valve.When sealing of stem or seat is damaged to induce
leakage,the compound can be used to do the second time sealing.A
concealed check valve is installed in side of each compound
injection valve to prevent compound from out flowing due to the
action of transmitter substance.The top of the compound injection
valve is the connector for fast connection with compound
injection gun.
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8.Extension stem
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For the underground installed valve,the stem can be lengthened
and for the convenience of operation the corresponding compound
injection nozzle and drainage valve can be extended to the top of
valve.
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9.Automatic body cavity relief
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When the body pressure going up un-normally as the unstable
factor,the trunnion ball valve downstream seat will be pushed by
unnormal pressure,and the release the un-normally pressure
automatically,it doesn't damage to the sealing of upstream seat.
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*0.Various driving types
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The top pad of valve designed according to ISO ***1,which is
convenient for connection and exchange of various drivers.The
common driving types are manual,electrical,pneumatic and
pneumatic/hydraulic.
Pays: |
China |
N ° de modèle: |
Q47F
|
Prix FOB: |
600 / Piece ( Negotiable ) (Negotiable)
Obtenir le dernier prix
|
Localité: |
- |
Prix de commande minimale: |
600 per Piece |
Commande minimale: |
1 Piece |
Packaging Detail: |
Plywood Case |
Heure de livraison: |
10 to 30 days |
Capacité de Fournir: |
150 Piece per Month |
Payment Type: |
L/C, T/T |
Groupe de produits : |
Trunnion ball valves
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