Full Welded Forged Steel Ball Valve DN 40 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: My AC leaks and mechanic says it is shrader valve. Is it expensive?
- It's cheap - even free if he's going to invoice you for re-charging the system. If he normally does A/C service he should have an extra one on hand. To replace it legally you would need a recovery machine to evacuate the system, replace the valve and then recharge the system. Probably $100. worth of service. To do it backyard style you'd put some gloves and goggles on, remove the leaky one and jamb the new one in while refrigerant is spewing out and then top up the system. Backyard style is almost impossible on a warm day because the refrigerant will be under high pressure, it would definitely make a good youtube video. If you did it on a very, very cold day (it stays in liquid form -15F), it would be easy because the refrigerant would be at a very low pressure.
- Q: i have a 1970 chevy sb 350 and i need to set the valve lash what is the proper method and where do i start? everything is stock!
- I truthfully have repaired alot of Chevy engines in my time. I continually adjusted them chilly while i became into development the motor or reinstalling products....much less muss and fuss and much less oil in each single place. The GM instruction manual says ( and that i've got been doing this for years ) is with the engine in the #a million firing place ( it is set via putting your hands on the #1valve because of the fact the mark on the damper comes close to the O mark on the crankcase front conceal. If the valves are actually not shifting then the engine is in the #a million firing place. If the valves flow because of the fact the mark comes as much as the timing tab then it incredibly is in the #6 firing place, and may be became over a million extra time to attain the #a million place.) as basically desperate, right here valves may be adjusted. V8- Exhaust- a million, 3, 4, 8 V8- intake- a million, 2, 5, 7 back out the adjusting nut ( 5/8's socket ) till lash is felt ( flow or spin the push rod...in case you could flow it up or down or spin it truly..it incredibly is loose ) while play has been bumped off, turn adjusting nut in a million finished turn ( to middle lifter plunger ) Use basically slightly chalk to mark which valves you have adjusted to maintain music ...desire I helped and sorry for the long dissertation.
- Q: If I flush the toilet the drama begins. While the toilet is flushing, if I lift the lift of the lid of the tank cover NOT THE SEAT, water shoots up straight in the air from the top/cap of the fill valve. This is a picture of a toilet fill valve.
- They okorder /
- Q: I've been told that I need to replace a clogged expanssion valve on my '96 toyota camry.A friend said he would properly recharge the system if i replaced the parts needed .I can't ask him where it is because he's out of town for a little while. I also need to replace the drier ,but it's obvious where it is.Please help me.
- The devil is interior the main factors. Is the motor vehicle interior utilising variety the place you could look into. what number householders. Any maintenance documents. Is the unique vendors handbook blanketed. i could have a Toyota mechanic placed it on a enhance and look into below intently. There are rubber boots that carry particular lubricants mandatory to the drivetrain that have a tendency to crack and leak with age. Has the Air Cond plumbing been switched out to settle for the hot form refridegerant. Do the belts and hoses seem properly maintained? My suggestion is to bypass forward and discover extra contemporary sort with fewer miles. Older autos, even Toyotas with that many miles that have not been properly maintained can grow to be a money pit and go away you stranded. making an investment extra money now can recommend saving numerous money and hardship interior the destiny.
- Q: Today I found out I have the heart disease Mitral Valve Prolapse. I'm 13, I weigh 109 pounds and I'm 5'8. I'm also pretty skinny too. I know this is a pretty common disease but should I be worried at all?
- Mitral valve prolapse is the most common cardiac problem and may affect five to twenty percent of the population. The condition is most common in women, although men are also affected. With MVP, symptoms do not begin before the early teenage years (approximately age 14 in girls and 15 in boys), but adults of any age may be affected. MVP tends to run in families, so those with blood relatives with MVP have a greater chance of also having the condition. If a person has mild MVP, he/she needs no restriction of exercise. But if the MVP is big, then it is a different thing. Because, though complications in this condition are very less, people who suffer from this condition have to take extreme care. In case of large MVP, you may have to cut down on your physical activity, have a surgery and may be put you on medications like beta blockers. If the valve is truly defective (not just 'prolapsed'), it is serious. Unfortunately, doctors have mistaken a 'differently shaped' mitral valve as a disease in itself. And this is where the non-disease comes in. In simple terms, a mitral valve that appears prolapsed is usually normal. It still is not clear to experts why some mitral valves appear prolapsed and allow some blood leakage backwards. I have an answer for that phenomenon, but the important point is that the disease is a non-disease.
- Q: 1994 Chevy K1500 P/U 5.7 liter 350 4X4 5 speed. When the truck is under a hard pull the valves start knocking, the knock sensor adjust the timing and the check engine light comes on. The code for the light is not detecting knock sensor. I have changed the pcv valve (which was suggested) and no change. This has went on for about 5 years. Doesn't matter the grade of fuel I use. Routine maintance and tune ups have been done to this truck. The converter was taken off 7 years ago because it was clogged. The truck runs rich after the timing adjust. The light resets itself when it is turned off. ( the code is saved)
- Excessive carbon build up on the valves may also be causing pre-detonation which the knock sensor will not be able to correct. If it is a high mileage or a rough service motor it may be time to open it up and see if it's time for a valve job, or possibly a rebuild.
- Q: I have a 99 Yamaha Warrior 350 and i am needing to take it and get the valves adjusted. I know prices will range from state to state but what would be the average price to take and get them adjusted?? Just the valves not including if they had to change the seals or anything.. Thanks(PS im a girl so put it in simple words!)
- The mechanics charge about $40. But, you can learn to do it yourself it is easy. Just loosen the outer nut. Turn the center one til it touches. Then back it off 1/8th of a turn. Then while holding the center one tighten the outer nut. Then your done with that valve, and repeat for however many valves you have.
- 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
- This Site Might Help You. RE: I plan on buy a BLOWOFF VALVE and woundering where does the BLOWOFF VALVE goes in my car? 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
- Q: I got a '99 bmw 740il that is leaking and burning oil. It shoots smoke out the exhaust when i first start it from burning oil. And the car misfires when idling, i did a tune up and the spark plugs were soaked in oil causing the tune up not to help anything for long cause it was missfiring the next day. Does this sound like the valve stem seals? I bought new valve cover gaskets and grommets and im gonna replace those this weekend, im hoping that will help. Comments please
- The symptom of bad valve stem seals is blue smoke after sitting overnight. But once that smoke is gone, a bad valve stem seal won't have any effect on engine running or idling. And it certainly won't cause a misfire. Worn valve guides can do all those things. You have far more serious problems than just valve stem seals. Get a wet/dry compression test and a cylinder leakdown test to isolate the problem to either valves or rings.
- Q: automotive cylinder heads and valve
- Valve rotators are just that, they cause the valves to rotate during operation preventing wear in only one spot there by extending the life of the valve and the valve seats.
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Full Welded Forged Steel Ball Valve DN 40 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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