Full Welded Forged Steel Ball Valve DN 32 inch
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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:so i'm replacing a one hole faucet, and i'm stuck at the very first step. the cold water valve turned off with no problems. i tried to turn on the cold water and none came out. unfortunately, the hot water valve just squeaks and goes around and around, never cutting off the water. when i turn it, it also leaks a minute amount of water, though regardless of which way i twist, it stops as soon as i do. i can't just unplug the hot water valve with it still running water, so does anyone have any ideas? how does one replace a valve like this to begin with? is it possible that there is a shut off valve for the house that i myself can access (without having to call someone to shut off my water)? in case you haven't noticed, i am a bit plumbing deficient, so if you could explain it without too much jargon, it would be much appreciated.
- You do not need to empty the water heater. Just shut off a valve at the heater and that will shut off all the hot water in your home. Do not empty water heater. I would also recommend a new shut off valve for the future.
- Q:hello!I'm designing a floor cleaner and for a water release system i was thinking of using a ball valve, connected to an actuator,however i'm not fully sure what to look for, and although I can buy the actuator and ball valve together, I'm not sure how to connect it to a motor and battery?If anyone can help my with this I'd really appreciate it!!Thank You!!
- An actuator for a ball valve can use either compressed air or an eectric power source to drive a motor. Air actuated valves can operate very quickly and are a little cheaper but they require a compressed air source and pneumatic controls to operate. An electric operator uses a geared motor to operate the valve and are slower. Electric operators are more expensive but only require power and some switches to operate. See link for hook up details.... The motor is built into the actuator so its just a matter of mating the actuator up with the valve. It would be best to buy a complete unit with the actuator and valve already attached. These will cost at a minimum several hundred dollars. Using a ball valve may not operate fast enough nor give you fine control if your considering using it to control the cleaning fluid applied to the floor. Instead consider using a solenoid valve instead. These are smaller valves and operate very quickly by just adding or removing power. Not to mention these are much cheaper $25 to $100 on average.
- Q:I have a 40 year old Holton Bb trumpet. It plays fine except the first valve always gets stuck when I play it, in the middle of a song it won't come back up. I can pull it back up and it doesn't get stuck real bad, but how can I fix this? I always oil it properly and insert the valves right. Do I have to replace it? Thanks
- You need not replace the valve, but it does need a bit of attention. There are many possible reasons for the sticking and you can spend a long time trying to chase them down. Inconsistent sticking suggests 2 likely reasons (there are several more possible reasons). The first is piston wear that has slightly misshapen the valve casing so it sticks because it doesn't travel through the valve casing exactly the same way every time. The second is that the felts and corks are worn and need to be replaced. The best thing for you to do is to take it to a shop, describe the problem and spend a few bucks to get it fixed right.
- Q:Bought a 1986 GMC 350day 1 started up good - idle was rough - idle really too low, when brakes where applied, it would backfire. (day 2) Changed oil which was really dark - oil filter too... ghanged spark plugs and wires. % 10 improvement... Engine lack power and vibrates but no more backfire.day 4 Changed Cap and rotor - % 30 improvement - day 5 Got the manifold gasket replaced. Same condition but silent... day 6 Changed coil in cap ... Changed fuel filter % 60 improvement... The thing ran like new... Full power I started beliving again..Got full oil pressure 300 kpa - no valve noise Ran 30 minutes on highway.... Valves started making noise especially on driver's side... Engine lost lots of power, and vibrates a lot... doesnt heat up to much but oil pressure seems very low. (day 7) Start up the thing, and even when cold and choke on, oil pressure not as good as in the beginning. What went wrong
- at first sounded like brake booster vacuum leak; the valve noise top end lack of oil ? if rod and crank bearings are good might be by pass spring on oil pump stuck or weak = low oil press
- Q:I have a yamaha cornet and i took the valves out to oil them. i put the valves in, and now only the middle on makes a sound. when i put down no valves, and doesn't make a sound, only when i press down valve two. i think it is the way i put the valves because it has those holes. can some one let me know what is the right way to put the valves in, like explain or show me a video. thanks.
- Every trumpet I've used has numbers on the valves. These should be facing you when inserting the valves, valve 1 being closest to you, and valve 3 being closest to the bell.
- Q:Full Bore ball vale and Reduce bore ball valve have diferent with each other ,I want to know about them.
- This Site Might Help You. RE: what is diferent between FB ball valve and RB ball valve? Full Bore ball vale and Reduce bore ball valve have diferent with each other ,I want to know about them.
- Q:In the very near future I'm having valve replacement surgery. I haven't yet been told the risks or the recovery period, does anyone know the risks or the recovery stages and how long recovery takes?
- Valve replacements actually have very low morality rates like 1-2%. There are always risk's with surgery though, such as blood clots or irregular heart rate. The recovery in the hospital is generally 5-7 days, and then it can take anywhere from 8 weeks to a year to feel recovered.
- Q:If you suffer from Heart Valve Disease why do you get tired or struggle breathing?
- There are four valves in the heart. (Bicupid valve and aortic valve in the left side and tricuspid valve and pulmonary valve in the right side). You have not stated which valve is affected. Valvular heart disease may cause shortness of breath (dyspnea) and heart palpitations. You may need surgery if your valve does not work properly. * A valve that does not close all the way will allow blood to leak backwards. This is called regurgitation. * A valve that does not open fully will restrict blood flow. This is called stenosis.
- Q:Any way to treat the calcification of the valves?Is valvotomy only an option for youths?
- Despite what Carly has said valvuloplasty is always an option but you have not offered much information to work with. Calcification of the aortic valve is not synonymous with stenosis of the aortic valve. There is no way to reduce calcification of the aortic valve leaflets. If there is aortic stenosis this places a strain upon the left ventricle. The most common approach is to replace the aortic valve prior to permanent harm being done to the left ventricle. It would be helpful to know what the findings of your echocardiogram and most especially the pressure gradient across the aortic valve and the left ventricular ejection fraction. If I may be of further assistance please let me know. I wish you the very best of health and in all things may God bless.
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Full Welded Forged Steel Ball Valve DN 32 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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