full welded forged steel ball valve PN 2.5 Mpa
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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: Model 28 BS 12.5 HP engine intake valve sticks. Please advise.When under a full load like tall grass, it runs great, but when the load is not as heavy, the intake valve sticks open, spewing gas back through the carb and mis-firing.
- Don't know anything about configuration of this model by number, but I can recommend you hit up your library for a copy of How to Repair Briggs Stratton Engines, by Paul Dempsey. I have 2nd edition, but I think they are currently on fourth edition. First thing I would do is pull the head and inspect the valve seats. Lap the valves if necessary. If the valve seats are good to go, then you have to look at the lifting mechanism. Does it have rocker arm, or straight push lifters? Could the cam shaft have been damaged (i.e., have you hit any stumps with it)?
- Q: how do u remove a valve seat from a head, and install the new one?
- What engine? Not all heads have valve seats that are pressed in. Some (many later model cars) have the seats ground right into the head and are not removable.
- Q: My third valve is always sticking, despite the fact that I oil them thoroughly every other day. It scrapes the sides of the case when I take it out/put it in, it's almost as if the valve is too big for it. Often times it will stick and I'll have to unscrew it and physically pull it out for it to be functional again.I've inspected it, and the inside looks just like the others which are fine. I've tried washing it, oiling it, and putting a trace amount of vaseline on it. What is the problem?
- Check the spring and plastic valve guide on top of the spring. I've seen these stick and the results are quite annoying, but once the spring moves up and down freely, so will the valve.
- Q: I have a 78 honda hawkii 400 or cb400TII and I need to know what the valve gaping needs to be set to
- download the manual free from HONDA.. Honda Cb400 Cb450 Cm400 Cm450 Twins Nighthawk (1978-1987) - Service Manual 400 Pag(Eng) pdf
- Q: The atrioventricular valves will be open whenA. Atria are in diastole and ventricles are in systole B. Pressure in the ventricles is greater than the pressure in the great arteries C. The ventricles are being passively filled D. The ventricles are in isovolumetric contraction
- Answer: (c) The ventricles are being passively filled. During diastole, a normally-functioning mitral valve opens as a result of increased pressure from the left atrium as it fills with blood (preloading). As atrial pressure increases above that of the left ventricle, the mitral valve opens. Opening facilitates the passive flow of blood into the left ventricle. Diastole ends with atrial contraction, which ejects the final 20% of blood that is transferred from the left atrium to the left ventricle. This amount of blood is known as end diastolic volume (EDV), and the mitral valve closes at the end of atrial contraction to prevent a reversal of blood flow. Mitral valve also opens when right ventricle is passively filled.
- Q: This is my first tranny install and there is one thing that i really think i f'd up on. I'v been installing a junk yard 700r4 and transfer case into this beater 1990 k1500. Everything is in i'm just waiting on a new throttle valve cable (detent cable) to put it. But me, being my first tranny install, thought that the piece inside of the transmission that the detent cable attatches too.....came out. which i later found out that it doesn't, and that the TV cable just connects to it. I yanked on it pretty good with some pliers, and it never came out, and it still moves up and down. My question is could i have done some serious damage to that peice and the throttle valve itself???? let me know what u think.... thanks!
- The only thing i can think you could have done i bent the peice that comes out of the trans. If the throttle valve still returns like a spring when you pull it with your fingers and you can still hook the tv cable to it it should be fine. unhook the tv cable at the carb or throttle body to hook it to the valve then hook it back to the carb or throttle body.
- Q: I been playing the trombone for 6 years, do you think i could learn to play the baritone easily,which baritone is easier,3 valve or 4 valve.
- The forth valve on the baritone is the same as the trigger on a trombone - it lowers the pitch 2 1/2 tones to extend the range downward, to assist in improving intonation, and to solve so tricky fingering problems. You can learn baritone quite easy, if you relate what you know on the trombone to it. Here is a quick lesson on valve playing. Trombone position Baritone valves 1 Open 2 2 3 1 4 1 2 5 2 3 6 1 3 7 1, 2 3 Trigger 4 On high F#, you must play 2 3 On High G, you must play 1 2 Good Luck! It is a great and wonderful instrument to learn, and will help you trombone playing, too!
- Q: Recently, my best friend told me that he has tricuspid valve disease. So basically, the tricuspid valve in his heart is leaky and doesn't close tightly, allowing the blood to flow backwards.I just have a few questions about it and i don't wanna ask him because he doesn't like talking about his condition and i don't wanna make him uncomfortable. I just wanna know, is there any risk on his life or will he be able to live his life normally?Also, he doesn't take good care of himself at all. He completely ignores his condition. So i need to know, what should he avoid doing? Maybe I can prevent him from doing all the things that could hurt him. Most of all, i wanna know if there is anything I can do to help him.Guys if there's anything you can tell me, then please do. He's like my brother, we've been best friends since 1st grade and now we're both 16. I just want him to be okay.
- Any sort of valve surgical technique includes exposing the aorta of the midsection, hence it rather is one among those open heart surgical technique. over the years, this has replace right into a incredibly simple technique for heart medical doctors and it has a fulfillment fee of in simple terms approximately 80-ninety 5%. there is an threat which you may choose yet another surgical technique afterwards, yet that purely happens in approximately 5-10% of sufferers that get the surgical technique. The survival fee for this operation is extremely extreme and purely 5-10% of sufferers adventure any undesirable outcomes throughout the surgical technique. This consists of an infection, stroke, allergic reaction, or bleeding. i'm going to keep you in my prayers Alex. maximum suitable of success to you!
- Q: What are Atrial valves??
- there isn't a sinoatrial valve in the human heart. There are 2 AV (atrioventricular) valves, and 2 semilunar valves, which are the aortic valve, and pulmonary valve. The AV valve seperate the atrium (on top) and ventricle (on bottom). Blood flows down from the atrium, to the ventricle, and then the AV valve closes to keep blood from going back into the atrium. While the valve is closed, the ventricle contracts, which send blood up through, the aorta ( left side) or the pulmonary trunk(right side). The semilunar valves seperate the ventricles from the aorta and the pulmonary trunk.
- Q: So outside we have a gas grill. There is a valve to turn when you want to use it. U can only hear the gas going when u turn the burner knobs but say u left the valve open and no knobs turned at all for 5 hours is gas escaping or does it only escape when the grills knobs are turned? Thanks
- The valves on the grill itself are the ones that allow the gas to flow. As long as you have no leaks between the main valve and the grill valves, no gas will flow when the valves on the grill are turned to the off position.
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full welded forged steel ball valve PN 2.5 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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