Home > Products > Forged Steel Ball Valve > Carbon Steel Forged Steel Ball Valve / Welded Ball Valve DN50-DN1200
Carbon Steel Forged Steel Ball Valve / Welded Ball Valve DN50-DN1200
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Product Details
Brand Name | Ouyi or OEM | Place of Origin | China | |
Model Number | NPS 4”-48” |
Product Description
Certification:API 6D
Carbon Steel Forged Steel Ball Valve / Welded Ball Valve DN50-DN1200
Quick Detail:
Size & Pressure : 150# DN50-DN1200
300# DN50-DN1200
600# DN50-DN1200
900# DN50-DN900
1500# DN50-DN600
2500# DN25-DN3000
Description:
FULL WELDED BALL VALVE
1.Bow-out proof stem
For the purpose of preventing the stem from flying off resulting in abnormal rising of the inner
pressure of valve,shoulder is fixed at the lower part of the stem.In addition,in order to prevent
leakage resulting from burnout of packing set of the stem in a fire,thrust bearing is set at the
contact position of the shoulder at lower part of the stem and valve body.Thus an inverse seal
seat is formed which will prevent leakage and avoid accident.
2.Anti-fire safe design
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.
3.Anti-static device
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.
4.Free leakage of body Sealed construction
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.
5.Low torque in operation
The self-lubricated bearings are installed at the friction of stem,resulting in wear resistance,fiexibility
of operation and low torque.
6. Double block&bleed(DBB)
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.
7.Emergency sealing
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.
8.Extension stem
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.
9.Automatic body cavity relief
When the body pressure going up un-normally as the unstable factor,the trunnion ball valve
downstream seat will be pushed by un-normally pressure,and the release the unnormal pressure
automatically,it doesn\'t damage to the sealing of upstream seat.
10.Various driving types
The top pad of valve designed according to ISO 5211,which is convenient for connection and
exchange of various drivers.The common driving types are manual,electrical,pneumatic and
pneumatic/hydraulic
Applications:
Large and medium oil, gas, water conservancy, pharmaceuticals,Chemical, heating equipment industry
We can also produce according to customer\'s size.
Specifications:
Competitive Advantage:
1. Our advantages:
Top quality, as a result of specialization and standardization! In production, full automatic lines have
been applied, such as CNC machinery etc.
Best price, as a result of direct selling! Direct selling is our marketing mode, so the clients can get the
best price from our factory.
High technology, as a result of innovation! Constant investment on R & D to encourage innovation and
long-term cooperation with China famous colleges and institutes to ensure our constant innovation a
Contact Us
- LISHUI OUYI VALVE CO., LTD
- Contact nameMr. Chen Chao Kui Chat Now
- Phone86-577-67319116
- AddressHeyi Industrial Zone, Oubei Town, Yongjia, Wenzhou, Zhejiang, China, Wenzhou, Zhejiang
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