Full Welded Forged Steel Ball Valve DN 30 inch
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- 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.
（Ⅰ）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.
（Ⅱ）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.
（Ⅲ）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 GB、GB/T JB、JB/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 9001、ISO 14001、API 6A、API 6D、TS CE、API607/6FA/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: hey...im kinda confusedis cochlear an artificial valve???and if not..what is an artificial valve??
- The cochlea is the auditory portion of the inner ear. A cochlear implant (CI) is a surgically implanted electronic device that provides a sense of sound to a person who is profoundly deaf or severely hard of hearing. The cochlear implant is often referred to as a bionic ear. An artificial heart valve is a device implanted in the heart of a patient with heart valvular disease. When one of the four heart valves malfunctions, the medical choice may be to replace the natural valve with an artificial valve. This requires open-heart surgery.
- Q: I have a stainless valve I want to install in a copper domestic water line. My concern is: are the two metals compatible? Are stainless steel and galvanized steel compatible?
- Yes they are compatible. It's common to have underground galvanized service water lines (from the main to the house) connecting to a house main shut off connection which then leads to full copper in the house.
- Q: ok, after lots of exploring around online and from some great answers from this site I have found the problem to my explorer. The torque converter solenoid mounting clip broke. thats it!! new question, do i have to take off the valve body to remove the solenoid. If so any tips? its way new territory for me. I hate automatics!!
- What are you? 9 years?
- Q: I had to replace the seat washers/stems etc in order for the constant drips from the kitchen faucet to stop. It did; but when i went under the sink to turn the water valves back on, the hot water valve felt as something inside it went smooth??? i can turn the hot water valve left and right but nothing is happening. No hot water at all from the kitchen faucet..Also there's low water pressure from the cold water that only came about when I tried to turn the hot water back on from the valve underneath the sink
- pull off the handle and try and turn it with channel locks or pliers, and remove the aerator screen and clean it. its very common for them to get plugged up after you turn off the shutoff valves and reopen.
- Q: i just bought a junky trumpet, didnt come with a mouthpiece... how can i tell that the valves work? They press in and dont stick, but im not sure about their functioning. Also there are no caps on the valves, will this affect playing? lastly, it has a stuck tuning slide, how can i get this to work again?
- whilst i develop into in intense college, I performed on a 3C and had a particularly good sound. in my view, i could in no way visit a smaller, shallower mouthpiece to play intense. i could quite develop my chops and be waiting to do it on a deeper mouthpiece. In college, I switched to and nonetheless at present play a Monette B2, that's analogous length to a a million a million/4C, and characteristic an excellent sound, and might play a intense G (4 ledger lines above the staff) and up on it. i exploit it for any group I play in, marching, stay overall performance, musical theatre, etc... ultimately it boils all the way down to private preferrence. %. the mouthpiece that feels the terrific to you and nonetheless can provide a good sound. you do not pick it so great and deep that your variety and sound go through, and you do not pick is purely too small and shallow which you get too outstanding and tinny of a sound. wish this facilitates.
- Q: My fiance needs his aortic valve replaced. He is 40 yrs old otherwise healthy. I am wondering how long he will be in surgery, how long he be in the hospital and any other info about having this surgery.
- where is it performed?
- Q: The check engine warning light came on in my car, i went to pump gas and try to start but it wouldn't start. I went to the dealership to let them check up, and they said the problem was the purge valve, it leaked. What is a purge valve and what does it do? Is it common for purge valve to go bad?
- the purge valve as it was refered to is in ur fuel pump on ur car and yes this happens offen when ur fuel pump is in ur fuel tank u should never run below about hafe a tank on a hot day because your fuel is what keeps ur pump from heating up and when u run low on fuel ur purge valve can over heat and warp hope this helps good luck
- Q: have a 86 flhtc had new cylinders 10-1 pistons supposed to be 86 cubic inches when i run it up to 90-95 bending valves what can i do to stop bending valves-------HARLEY DAVIDSON
- A. Botan and I can conquer anything! And we can't die together cuz She's immortal! But E is my second choice, although I wud probably end up in the other place. EDIT: An if we live forever, I hope we stay forever young. Acctually, only I would need that. Botan is already forever young. And if we lived forever, then we dont need to worry about enimies killing us....
- Q: I am having a leaky valve is that normal? the doctor said that it is normal what do i do?
- Like most everything, there are degrees of valvular leakage. A valve can be leaking a lot or a very little amount. Valves are a biologic mechanism and therefore are not precisely manufactured with some areas that don't ideally fit, leading to minor leakage. If you were to take 100 random people off of the street and do an echocardiogram, the vast majority would have one valve or the other that had at least some trivial leakage. Therefore if the majority of people have the same thing and it is not a pathological process, it is essentially normal. Next, certain valves leaking are much more important that other valves. Moderate leakage of the tricuspid valve for instance is not a particularly important finding. But moderate leakage of the aortic valve is a very big deal that requires close medical attention. In sum, valves with trivial leakage do not require serial exams for follow up or any special measures like antibiotics before dental procedures. Since this is such a common finding, it is reasonable to consider this a normal finding. Not knowing precisely what the result was on your echo, I can not specifically advise you. At your next doctor's appointment make a note for yourself to ask him/her for clarification. Good luck.
- Q: My check engine light is on in my 1999 Toyota Camry XLE...I went to autozone and they told me it was my egr valve BUT they did not tell me if it need to be cleaned or replaced. How can I tell if it needs to be cleaned or replaced
- Flag is right. You should of got the code from AutoZone and posted it here. A trouble code can have several meanings and the salesperson just gave you his best interpretation with his limited knowledge. You either had a P0420, P1410, P1411, P1661 or P1662 code. More than likely it's EGR Valve Position sensor or EGR Vacuum Solenoid depending on the code. It also can be the wires or connectors that plug into them or one of the vacuum hoses to them. About a $40-$70 fix if you do it yourself. You can pull the EGR valve off to inspect it but you need to replace the $1 gasket under it when you are done. On old poorly maintained engines they can clog up with carbon deposits or the vacuum diaphragm can rupture. You can apply vacuum to the valve manually and see if it opens while you have it off. If you have good lungs you can do it with a piece of hose. :) If it works then it's not getting vacuum and most likely it's the EGR Vacuum Solenoid that opens and supplies vacuum to it. The EGR Valve Position Sensor tells the Vacuum Solenoid to open via the ECM. See if you can't get the code and post it.
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Full Welded Forged Steel Ball Valve DN 30 inch
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 10 pc
- Supply Capability:
- 100 pc/month
OKorder Service Pledge
OKorder Financial Service
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