• full welded forged steel ball valve DN 6 inch System 1
  • full welded forged steel ball valve DN 6 inch System 2
  • full welded forged steel ball valve DN 6 inch System 3
  • full welded forged steel ball valve DN 6 inch System 4
full welded forged steel ball valve DN 6 inch

full welded forged steel ball valve DN 6 inch

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
10 pc
Supply Capability:
100 pc/month

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Design Features of full welded forged steel ball valve

The body of ball valve is full welded,selects high quality forged material,and adopts the advanced forged forming technology to form two semi-spheres which are welded into a whole in the middle of the body.This welding technology differentiates the ball valve form others,and makes the valve more spherically,so the valve structure is more compacter,lighter and stronger.Besides,the middle direct welding realize highly accurate valve body manufacturing,makes fully and completely sealing between the seat and ball.The full welding instead of bolts completely avoids the outside leakage,so ball valve is the ideal product for under-ground,offshore working platform and under-sea equipments.

Adopting fixed plates or trunnion to support the ball

The top and bottom of the ball is supported by upper and lower fixed plates or stem and trunnion,and the ball is accurately placed in the center of the ball valve to achieve complete seals and precise movements.When plate adopted,the force exerted by the medium to the ball is distributed via the plate to the left and right bodies,so that the stem does not bear the blending moment from the medium,but only the torque from the ball rotation during the opening/closing of the valve.The low-friction PTFE Teflon composite bearings installed between the ball axis and fixed plate and between the stem and the trunnion can absorb ball moving action caused by the pressure of the medium.This structure brings stable actions and easy operations for the ball valves,and the required operation torque can be reduced,so smaller actuators can be used,and the cost is cut down.

ball valve seat is floating structure,means the seat can move along the medium direction,so that the seat can fit against the ball all the time.
Double piston effect structure seat of full welded forged steel ball valve
Seat design is special double pistons effect structure,it can ensure the seal wherever the medium flows into the ball valve.

Seat multistage seal strucute of full welded forged steel ball valve
As following graphic instruction,on seat bearing ring,set two soft sealing rings(A and B)and metal sealing spherical surface which can seal with the ball.Seat ring A is spring loaded,which seals the surface with the ball tightly to the surface to form an initial seat;When there is pressure generated from medium,the piston force is generated to make seal ring A elastically deformed and seal ring B fit the surface of the ball surface due to the piston effect caused by area difference,thus the second seal forms.When the medium pressure is rising.It will generate huge pressure to seal ring A and seal ring B,so the two seals have a greater elastic deformation,then metal seal ball surface compact with ball surface to form the third level of metal to metal seal.

Secondary seat seal device of full welded forged steel ball valve
As the above graphic instruction,the secondary seal device(seat grease injection valve)can be chosen according to the actual working condition,medium requirement,seal requirement,etc.Seat ring grease injection valve is a one-way valve,installed on the body,which can prevent the leakage and inject grease under the outside force.When secondary seal is required,there is a grease injecting channel and hole on the seat ring.The grease can form a seal between the seat and the ball,and then stop the leakage.

Standards Applied of full welded forged steel ball valve

Design   Standard

 API   6D customize 

Connection   Standard

 ASME   B 16.25-2007  ASME B 16.5  ASME B 31.4  ASME B   31.8  DIN  GBGB/T  JBJB/T JIS customize   

Test   Standard

 API   6D customize 

Face   to Face

 API   6D customize 

Pressure-teperature   rating

 ASME   B 16.34-2004 customize 

Marking

 MSS   SP-25 customize 

FAQ of full welded forged steel ball valve:

Q1:I can’t find the type of steel check valve which I need. what can I do?

The chart above only lists out some common composition of steel check valve parts.We may provide other different parts material composition according to the customer's request or the actual valve working condition.

 

Q2:Which certification do your products pass?

  Our products are in accordance with ISO 9001ISO 14001API 6AAPI 6DTS CEAPI607/6FA/BS6755.

 

Q3:How can I place an order?

  The only one thing you should do is to tell us the sepecification about type quantity and  mode of transportation, then we will send you quotation within 24 hours.



Q:Movers messed up the valve so hose won't screw in w/o leaking
Buy a new valve at an appliance parts outlet. Make sure it's the right one. Many times they will come with instructions. Unplug the unit. Shut off the water and remove the hoses. Remove the back panel to access the valve. Remove the old broke valve and replace it with the new one. Replace the panel. Attach the hoses and turn on the water. Check for leaks. Plug in the unit and give it a test. Try all the temperature settings. Congratulations. You are now a professional..
Q:Hi all, I found oil leakage in my distributor and am about to change the o rings. however, i feel that a blocked PCV valve is causing the pressure to push oil into the distributor. I have been searching for the PCV valve. Can someone please tell me where it is?
The PCV valve is located beneath the intake manifold on the right (passenger) side. It threads into the breather seperator and points toward the center of the car. To remove it, you'll have to remove the Idle Air Control valve located on the end of the manifold log. Be aware that you'll have to do at least part of this task underneath the car, and that the IAC valve has antifreeze circulating through it Get a mechanic to do it if you can afford it
Q:When i went to the cardiologist a few months ago, i remember him saying that my pulmonary and tricuspid valve were leaky, and i think he said they were a 1 on a scale of 1 to 4 which is minor and of no concern. but i have valve problems in my family and i got thining about it. anybody know what this scale is called/have more info or was it something he just made up to tell me that it was minor?
Initial auscultation of your heart sounds can determine the presence of murmurs which are indications that valves are not closing properly (leaking) and allowing the heart chambers to fill and empty properly. Usually once murmurs are detected, an echocardiogram is done to visualize the valve function. From this test gradients can be determined to assess individual valve functions. The higher the gradient (it's a calculation based on blood flow and pressure across the valve leaflets) the worse the valve function. Mild gradients are not considered serious and are usually just monitored with your regular checkups to see if they are worsening. Serious gradients indicate poor valve function and are usually corrected with either valvuloplasty or valve replacement. Serious valve impairment also has associated heart symptoms such as congestive heart failure, left ventricular hypertrophy, arrythmias, and poor ejection fractions-to name a few. Regular follow-up is suggested with your cardiologist to monitor any potential deterioration in your valve functions. Meds are often used to treat the symptoms of poor valve function not to cure your valves. Once damaged, heart valves do not repair themselves. The aim is to reduce the workload put on the valves and prevent their function from declining further. Hope this helps.
Q:why is a biological valve replacement weak? in the way it does not last much longer that ten years?why do blood clots form with a mechanical valve replacement?what kind of bleeding problem can the anticoagulant medication cause?if you know the answer to any of these questions (doesnt hav to be all of them) plz answer!! thank you :p
A biological valve replacement is not weaker than a prosthetic valve, it is however known to not last as long. Tissue deteriorates over time and they have found no way around this, as of yet. Blood clots tend to form because, a foreign body has been placed in a circulatory system made of smooth tissue and liquid (blood). To put it simply, think about how soft and pliable arteries and veins are, kinda like your skin. They put metal into this and then pump blood which passes through it at a pretty high rate of pressure. The blood tends to kind of slurry.... making the platelets sticky which then results in them wanting to clump (clot). See? Bleeding? I have been on Coumadin for 31 years. I am 53. The same things that make anyone bleed will make a person on anti-coagulants bleed. Only that those on Coumadin/Warfarin will bleed more. You could bleed from shaving your legs or face, from hitting your thumb with a hammer, a knife in the kitchen, a broken arm or leg or blunt force trauma (a fall or punch). Some bleeding could be internal. A compliant patient that has their blood tested as directed is in good control and should not be afraid of the medication. It is, after all, saving their life. I chose a mechanical valve over tissue because I was young and didnot want to face a repeat surgery. It was a very wise decision. The valves these days are fabulous!!
Q:Hi, I'm looking for asymmetrical two way valve needed in pipe line liquid product
Valve company has been able to fulfill the requirements of its customers according to the highest standards, and always consider the customer satisfaction, so we would be grateful to receive their viewpoints and comments. So we also hope to contact us if they need further information, confirmation on any product. Please note that according to continually work on improving our products, all products materials, specification, dimensions, and etc. listed are subject to change without notice.
Q:My friend had heart surgery and it was pretty serious. She got a new heart. Days later they checked her and discovered that she bursted a heart valve. The doctors say it's one she can live without. That really concerns me. The valves connect directly to the heart. Please help.. Will she be ok if she doesn't get it replaced?
If she has a ruptured heart valve it needs repair or replacement. The valves serve a critical role in maintaining normal flow of blood through the heart. Without the valves blood will backflow and cause buildup and many problems. Maybe she is stable and can wait for surgery at a later date? I'm not aware of a situation where you can live with a ruptured valve. I hope she is in good care.
Q:What is the best procedure to check/adjust valve clearances? This engine is a perkins diesel inside of a cat generator. I know that he exhaust valve is .018 and the intake valve is .008.
Estoy muy apasionada de este mundo y todos mis amigos han confiado en mí a la hora de comprar un ordenador, yo siempre les he comprado de sitios web porque tienen la mejor oferta al mejor precio, pero, el ultimo ordenador que he comprado ha sido uno de juguete para mi hija, y como siempre he acertado, tiene la dimensión perfecta para ella, buenas canciones, aprende con él y imita muy bien un ordenador portátil con su ratón con todo, a ella le ha encantado muchísimo.
Q:I have a 1991 Toyota Supra turbo that has to have the valve stem seals replaced.It puffs white smoke upon start up,but it goes away.Just curious if the seals can be replaced while the head is still on the motor in the car.
yes valve stem seals can be replaced with head on, requires cam removal and cil. pressurised with air to hold valves in place whike vakve spring is removed seal changed and spring and keepers reinstalled. If you already had this done and it still smokes chances are you have a bad valve guide.
Q:So i finaly got my check valve and my airstone. The airstone is actually a flat round airstone and is 5 inches in diameter to be in my 10gallon. Is it to big? though i have a tetra whisper air pump for 10-30g.And how do i place the check valve? Do i put it closer to the tank or closer to the pump? (just to make sure since i heard so many different ways people put it). Or does it even matter?And lastly, do i put the OUT side of the check valve facing towards the tank or the pump?Thanks! after this im ready to install it!
Adequate the purpose you let a tank cycle in the first place is due to the fact of Bactria needs to grow that will maintain your water clear. As for overstocked. I consider your proper on the threshold of being over stocked. Just preserve the tank walking a lil longer and spot if it clears up. But when your 15 gallon tank has the filter from the ten gallon tank that could be why to you dont have sufficient water moving around to scrub it
Q:Surly Pilots don't just switch the fuel selector valve of mid flight
Most likely it was found in the off position because of impact forces. That's not uncommon. The NTSB report mentions that not only was it in the off position it was torn from the fuselage and the fuel lines to it were ripped off and the whole bottom of the valve body was torn away. The airplane hit the water in a steep angle and at high speed, roughly 1 hour after takeoff. NTSB figured it was in a 45 degree bank and beyond 10 degrees nose down...in excess of 4700 fpm rate of descent. Marks on the propeller plus all the engine controls as well as indications on the gauges indicate that the engine was operating at full power. Last recorded fuel flow an instant before impact was 22 gph. It wouldn't have been able to do that if the valve was off. In the roller coaster ride that the plane went through and the confusion he must have had before hitting the water I'm sure he didn't turn it off...he had all could handle trying to fly the plane. He became disoriented in reduced visibility and who knows what he thought was going on. The destruction was total.

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