Full Welded Forged Steel Ball Valve DN 26 inch

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10 pc
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100 pc/month

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Product Description:

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.
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.

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.

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  GBGB/T  JBJB/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 9001ISO 14001API 6AAPI 6DTS CEAPI607/6FA/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.



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Q:roman tub valve ?
Remove the valve and take it to a plumbing supply store. Home Depot and the like may have what you're looking for; but you're more likely to find it at a plumber's supply. They are the only ones I've ever found who carry odd bits.
Q:I cant find the EGR Valve on my 2003 dodge ram 1500 5.7L Hemi DOES IT HAVE ONE?
The EGR valve and electronic solenoid on most 2004 and newer Chrysler 5.7L Hemi engines is mounted on the 'front end' of the driver side head close to where the intake manifold bolts to the head and a tube is routed from the EGR valve to the intake manifold, although on some Chrysler models with the 5.7L Hemi engine it is mounted on the 'front end' of the passenger side head. To replace it remove the electrical connector from EGR solenoid, remove the 2 bolts from the exhaust gas routing tube flange which is connected to the EGR valve, and remove the 2 mounting bolds which connects the EGR valve to the head. Be sure to replace both gaskets when replacing the EGR valve, the routing tube flange gasket and the EGR mounting gasket.
Q:aortic valve stenosis severe amemia hemoglobin 9.1 ?
From personal experience yes it can. My mothers hemoglobin dropped down to 8.0. The Dr said it was because of her stenosis in her aortic valve causing her to bleed in her abdomen. She had her heart surgery and it came back up, just like the Dr said it would.
Q:Toilet wall valve is not working properly?
Check your fill valve (inside the tank) first. If it appears to be working properly, turn the water off outside the house, drain the tank, take the filler tube ( from the valve to the bottom of the tank on the outside) loose at the valve. Remove the valve and inspect for obstructions, such as calcium and or lime deposits. You may need to replace the valve as they will occasionally wash out over time. Reverse this process to put everything back together, and be sure to wrap the male threads on the supply line (pipe sticking out of the wall) with teflon tape.
Q:Mitral valve regurgitation?
If there is regurgitation but it's minimal, you likely have little to worry about. Mitral Valve disorder is commonly known as a heart murmur. Many people have them. It's only when there's regurgitation involved that it becomes more complicated. Since yours is trace and trivial it definitely requires investigation. At some point they may want to do a repair of the valve or a replacment but that depends on the degree of regurgitation. Regurgitation simply means that the valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood from the left ventricle, through the mitral valve, and into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. Treatment will depend on the severity of the regurgitation so it's something you'll need to discuss with your doctor/specialist.
Q:How do i make a ball valve?
put a slave servo on it,
Q:Valves and cylinders?
nowadays usually it's four valves per cylinder, though still u may find 2 valves per cylinder. u cann't know how many cylinders u have from knowing the number of valves, it depends on the design.
Q:headers bad for EGR valves?
Check out what they call the DPFE sensor or the egr vacuum solenoid. This sensor controls the flow to the egr valve and your code will probably read: EGR insufficient flow. This sensor is very common and it is a dealer item only. 99% sure it isnt your egr itself. Part number : 4U7Z-9J460-AA dpfe sensor $76.40 F63Z-9J459-AA $29.98
Q:why are pig heart valves suitable as replacement for damaged heart valves in humans?
Biological valve is made of human or animal tissue. These valves last 12 - 15 years, but you may not need to take blood thinners for life. Human body has a tendency to reject foreign material such as porcine valve. Medication can be used to retard this effect, but is not always successful. Biologic porcine heterograft - harvested aortic valve of pig that is preserved in glutaraldehyde and mounted on specially designed sewing ring. (Carpentier - Edwards/ Hancock/ Medtronic) Tissue valves are also made from 16 to 18 months old calves and harvested aortic valve from human cadaver.
Q:Mitral Valve Prolapse and headache...any relation?
Although mitral valve prolapse is a lifelong disorder, many people with this condition never have symptoms. When diagnosed, people may be surprised to learn that they have a heart abnormality. When signs and symptoms do occur with mitral valve prolapse, it's typically because blood is leaking backward through the valve (regurgitation). Symptoms can vary widely from one person to another. They tend to be mild, develop gradually and may include: A racing or irregular heartbeat (arrhythmia) Dizziness, lightheadedness Difficulty breathing or shortness of breath, often when lying flat or during physical exertion Fatigue Chest pain that's not associated with a heart attack or coronary artery disease When your heart is working properly, the mitral valve closes during contraction of the left ventricle to prevent blood from flowing back into your heart's upper left chamber (left atrium). But in some people with MVP, the mitral valve malfunctions. In these people, the mitral valve leaflets are abnormal with extra tissue, bulging (prolapsing) like a parachute into their left atrium each time the heart contracts. The bulging may keep the valve from closing tightly. This may not cause problems if only a small amount of blood leaks back into the atrium. When blood leaks backwards through the valve, it's called mitral regurgitation (MR). MR can cause symptoms. Take care always! OIRAM

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