Full Welded Forged Steel Ball Valve DN 18 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.
（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: Why are pig hearts valves used as replacements for damaged heart valves in humans? Are there any complications and are they still used today?
- The tissue is most like ours. Yes, they are still used. They have a low rate of rejection.
- Q: Im looking for a new BBb tuba. i would like six valves at 4+2. but if not looking for 6 valve BBb tuba
- Better get busy with that search engine, then!
- Q: okay, so i have a 2003 cr125 that i wanted to trade for a 4 stroke bike, and i found someone with a 2006 kx250f that wants to trade. He said all the bike needs to be running are 4 valves. The bike is in very good condition from the pictures i saw. How much are the 4 valves going to cost if i bring it to a mechanic shop? is the trade worth it? or should i just keep looking? thanks!p.s.- my cr is in absolute mint condition, and i never even rode it because it is just to much bike for me and i am not use to 2 strokes
- keep looking, they never need just valves, if it needs valves, the top end also needs to be rebuilt. when your already going to be in the motor that far, it would suck to get it back together and then the piston goes or something else that was getting abused when the valves were going. if you can`t do the work yourself it will be expensive, even if you can do the work you need to factor in parts, machine shop,and specialty tools. you could set up your cr125 for way less money, and make it work for you, i`ve seen little kids and girls at the races riding 125`s and they can`t touch the ground without blocks. and you`ll love that 2-stroke when it comes time to rebuild it, you could put all the best parts in it and do it yourself for under $300, compared to sometimes over $1500 for 4-stroke, take it from me i`ve done it, i`ve raced 4-strokes since 2001. if your not racing, stay on those 2-strokes for as long as you can, they will make you a better rider anyway, and keep riding, you`ll get used to it :-)
- Q: My 4.0 L V6 2002 Ford Explorer has this plastic casing on top of the intake manifold...some of the hoses (brake booster, etc) are actually connected to the plastic casing, now how can i replace my pcv valve?
- The PCV Valve is not connected to your brake booster. If it were, engine oil and other debris would be pulled into the booster diaphragm and contaminate it and destroy it. Your PCV Valve is located on one of your Valve Covers. The Valve Covers are the long metal lids that run the full length of your engine on either side. Normally your oil cap is also located on one of the covers so you can fill your engine with oil when needed. The part that you are looking for is normally made of plastic or metal, and it is seated in a rubber grommet in one of the valve covers. You will normally find a single rubber hose coming from it leading to either your air cleaner or a port on the intake plumbing. Normally located before the throttle body. The PCV Valve itself, is a cylindrical object that is normally about 1/2 inch to 3/4 inch round and about an inch to 1.5 inches tall with a single, (sometimes double) port at the top. There is an object on your intake manifold, and sometimes also located below your throttle body, that does look like a PVC Valve. But its not. Its a simple vacuum port connector for access to manifold vacuum to operate things like your brake booster, and some of the emission control devices. I hope that helps you out. Good Luck!
- Q: Was wondering if there is something I could purchase to put into a car so that it will become a 24 valve????
- Time to drop out of your software then. You did no longer even attempt - you in basic terms decrease and paste an common quiz devoid of even inclusive of the linked diagrams, and anticipate us to unravel it. Why could we do this? you haven't any longer even attempted. i do no longer want you getting close to a motor vehicle in any technical means in any admire in case you could no longer answer those questions.
- Q: I have rented a house and the irrigation timer only has wires of one zone.It goes to a single valve then out to a big round cover with 6 zone pipes coming out of it. What the heck kind of set up is this?does it do a mechanical rotation inside that cover? the zones only come on one at a time but every time I turn it on I get a different zone as they are all Zone 1 on the timer.
- The okorder / Please provide pictures if you can, and i can expand more on helping you figure this out.
- Q: wife died at 40 still awaiting results of exsaminers report. Can CPR be given to some one with two artificial heart valves mitral and arotic? She the person administering CPR be aware that they are in the heart...
- Yes, and it doesn't matter if there are artificial valves or not. The thing about CPR is that it's only done for someone who is actively trying to die. The alternative to doing CPR is to let someone pass away, which is not usually the best course of action (unless they have a terminal disease and have asked not to be resuscitated.) If you are asking whether the presence of heart valves excuses someone from NOT doing CPR... then no. If you are asking whether heart valves + CPR and a bad outcome is because CPR should not have been done, then no to that too. The right thing to do for someone who is pulseless is to start CPR, call 911 and get more definitive treatment on the way. CPR is not going to revive someone - it is only a bridge until a defibrillator and/or cardiac drugs are available. I'm sorry that you lost your wife at such a young age, and I hope you find the answers you are looking for.
- Q: I keep the tire pressure in my tires at approx 40 lbs per tire. I have an inexpensive tire gauge that I use to measure the pressure. Recently, one tire seemed low, so I measured the pressure and the batteries were dead in the tire gauge. I replaced them and measured again.It said 20.5! I thought I was going crazy, but then measured all the other tires and they were around 35 to 40. I filled up all the tires to about 40, but when I measured the weird one again, it said only 30!The question is, could there be a problem with the tire valve that is preventing me from getting a good measure of the pressure? I filled up the tire to where it looks really filled up, and I'm afraid to overfill it. I'd like to get it to 40 lbs but I don't know if it's already gt; 40 lbs with a tire valve problem. Or if a tire that's at 20 pounds can look so filled up that you couldn't tell it from a tire that's at 40 pounds?Any info would be appreciated.
- you dont have to take it to a mechanic for a tire problem. take it to any tire place.. les schwab, cooper, anyplace that does tires... have them replace the valve and clean up the bead on the rim. It should only take 20 minutes and cost maybe $5.
- Q: here's some additional info asking of my question...I plan on buy a BLOWOFF VALVE and woundering where does the BLOWOFF VALVE goes in my car or do i have to replace with stock EGR VALVE using same hoses or help me please don't wanna screw this one up
- Ben- If your car is not turbocharged you cannot install a blow-off valve. If your car is turbo-charged, this annoying device replaces the Waste Gate. What does a blow-off valve do for your car? NOTHING! It does not add horsepower. It is simply a noise maker to attract the attention of Law Enforcement. So what can you install to improve a Turbo-Charger's boost capability? HKS Controller, Cold Air Intake, Intercooler, High Flow Catalytic Converter, and some type of high performance exhaust system. What's this going to cost? $5000.00+ easy! Lastly, the Blow-Off Valve has nothing to do with the EGR Valve. Two totally different devices, performing two completely different tasks. And... not to burst your bubble. Since you don't know the difference between a Blow-Off Valve and an EGR Valve, I suggest you start taking some basic Automotive Technology classes BEFORE you get into learning about the high performance parts. Why? The last thing you want to do is get into something that is over your head, then have a very large repair bill on your hands because your inexperience in the task at hand is the result of the damage done to your car. One last item here. Performance does not equal fuel efficiency. The more horsepower you want, the more fuel will be required to make it. The more horsepower you desire, the lower the reliability. This becomes a factor because you will be harder on the parts which are doing the jobs required of them. So think before you decide to make major changes to your daily driver. Making performance changes to your daily driver, is a great way to have your friends passing you up with you stuck on the side of the road facing a big tow bill and an even larger repair bill. Bottom line, build your muscle car for a weekend romp, and leave the 4 Cylinder job shuttle alone. Just speaking from 25+ years of turning wrenches!
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Full Welded Forged Steel Ball Valve DN 18 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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