full welded forged steel ball valve PN 5 Mpa
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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:I have 06 Suzuki gsx-r 750 and i was wondering what are the signs or how do i know that my valves need to be adjusted?
- Buster Brown is right on the money. Most bikes have double overhead cams these days and the valve clearance tightens up and can cause burned valve faces or seats. Single overhead cam engines using rocker arms tend to loosen up and will clatter more. He's especially on the money about keeping track of valve clearances at each check. I've done that for years as well as keeping record of compression readings.
- Q:I just bought my first bike in 20 years, and as a result have had to pump up a bike tire for the first time in 20 years. I was dazzled to discover a type of tire valve that I'd never known about. The Presta.So of course, I need a pump with a special adapter, I didn't know to unscrew that nut at first so I accomplished a whole lot of nothing for awhile, and once I did open the nut, the pump kept slipping off the tire once I got anywhere near the tire' recomended PSI until I awkwardly held it in place while operating my pump with one hand, which of course meant less leverage and so while I got above the min recommended PSI, I couldn't get anywhere near the upper end of the spectrum. Why would anyone use these ridiculous contraptions? The fact that they are used means there must be some rationale. A brief internet search seems to find more forum posts with people saying the alternative (Schraeder) valves are more reliable and don't leak as much either.Educate me!
- I've never had any problems with presta valves. I suppose their only advantage is that they can be fitted on ultra thin rims.
- Q:Hello. I am interested in purchasing a Hydroclean Fill Valve for my toilet. Are these good fill valves? Thanks!
- who cares, a toilet fill valve only costs a few bucks. as long as it opens and closes it's a good valve. if it only lasts for a year then it's a piece of junk and you should try another brand. it's not a major decision
- Q:A friend of mine is having open-heart surgery next week to replace a heart valve. He needs to decide whether he wants a mechanical valve or a biological one. He is 28 years old. Which would you choose and why?
- Ask the surgeon which would be most appropriate in,If you trust your surgeon let him make the decision if you don't get a different surgeon.
- Q:I have a 2000 Mitsubishi Eclipse GT.I just replaced the EGR Valve yesterday, and disconnected the battery to reset the code.My old valve was nasty and loaded with carbon and the valve wasnt even opening.As soon as I drove it out of my driveway with the new valve I IMMEDIATELY noticed the difference, as it was back to normal and felt like the car moved quick again without the knocking. But after about 20 miles, the light came back on [the car is still running perfect].Today I went to Autozone and had it scanned, and sure enough, code P0403 came up as EGR Valve Circuit. He cleared the code out, and I drove to a nearby store, and when I came back out and turned my car on, the code was back AGAIN.What's the problem?If you have an idea of something else that I should check, please give me an idea of where it is located.Thank you.
- Check all your vacuum hoses for cracking or leaks
- Q:We've got a one-handled faucet for the tub/shower and it has that pressure-balancing mechanism. We have it set, I think, so that we can take the hottest showers possible, because our water heater lacks enthusiasm. However, when I want to draw a bath for the baby, I need it to be lukewarm - and I have to turn it almost OFF to get the water to be even tepid. I can't get cold water out unless it's only trickling. As far as I can tell, our cold water pressure isn't different from the hot (bathroom faucets are 2 handles and H C seem to be about the same pressure). Is there a way to adjust the valve in the shower so I can get both the hottest possible, and the coldest possible water at full pressure?
- the new single handle tub and shower valves all come with a scald guard mechanism.(its code so kids cant turn on the hot and burn themselves). take the handle off and mess with it. it will be grey or black with a bunch of grooves on the outside. keep adjusting it till it satisfies you.
- Q:I have an '03 vw jetta and don't know if I should get a greddy blow off valve or an injen cold air intake? Any suggestions? I don't know a lot about either, what is the difference between them?
- You aren't getting a lot of power out of a BOV. I don't mean to sound obvious or degrading if you know this but a BOV makes the pissssssss sound you hear when you wined out the turbo. It might help the turbo release some pressure and get some more power that way but besides that not much. You will spend about $250 on a blow-off value and unless you install it it's gonna cost you about $80 per hour to have someone else do it. It is about a 1 and 1/2 hour project so your looking at $370. An air intake on the other hand is what I suggest. To get a brand name it will cost about $250 but you can install that yourself in about 45 mins after figuring out that you have been reading the directions upside down for the last hour. Just kidding... It's a really easy install and it can add anywhere from 10-15hp. By the way, if you don't have a turbo Jetta there is no point to buying a blow off value because it won't do anything. Now that I think about it if you do have a turbo jetta get a DV (Diverter Valve). The nice thing about a diverter valve is that it will prevent you from losing boost which is what gives you most of your power from the turbo.
- Q:Can a clogged EGR regulator valve cause my car to stall out and die when it's idling at red lights?If I give it a little has it wakes the car up and keeps it from dying.One mechanic told me it was clogged up and that it can cause that issue. My boss says there's no way that's the problem... I say we've fixed cleaned or replaced just about everything else...Is this true or is the mechanic just trying to pocket a bit more $$??
- No, there is no way a clogged EGR valve can cause the car to stall. The EGR valve is only supposed to open and allow flow when the engine is under load so if it's flow is stopped all the time it behaves no differently at idle than a new valve. HOWEVER, if the valve is dirty or carboned up and the valve is getting sticky and not closing all the way when it's supposed to then it can cause a stall. Do you know what kind of car it is? Update: It's a 2002 ford focus wagon These cars have a very common problem with stalling and it is usually caused by rotted out rubber elbows on the PCV valve vacuum lines. If you follow every inch of the PCV hard lines there will be at least two rubber fittings on either end of the system, poke your fingernail into the corners to see if they have gone soft and cracked.
- Q:Its a 1981 Monte Carlo SS with a GM 350 crate motor. There is oil all over the heads valve covers. It isn't my car, but I was thinking of buying it..Thank you.
- valve cover gaskets leaking, oil cap not tight enough or the intake gasket leaking.
- Q:I acquired an old valve guitar amp not long ago and i think it needs new valves trouble is the valves that are in it have no writing left on them and there is one valve completely missing how can i find out what type of valves to put in it. Could i use a multi meter to see what voltage etc is going into the valve socket and then find a valve with matching voltage. Thanks for your help Marc
- I never considered VOX a crunchy amp, has more of a jangle sound to me. Not sure what wattage you are looking for. In my opinion you don't need many watts in a class A tube amp. I heard an Orange Tiny Terror through a Marshall cabinet recently and it was awesome. I am considering that head with the Orange 2 x 12 cabinet. That head is only 15 watts but man is it loud...and crunchy.
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full welded forged steel ball valve PN 5 Mpa
- 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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