Full Welded Forged Steel Ball Valve DN 22 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: i have a valve seat pop out and it did some damage my question is can it be fixed i took it to a machine shop the guy look at me with a little confusion he said it cant be done anyone out there have another answer
- It depends on the amount of damage. Before they relocated the oil cooler it blocked airflow to one cylinder and the exhaust valve ran hot. The valve guide wore, the valve started hitting the seat off center and the valve head would break off to bounce around inside the cylinder, often putting a hole in the top of the piston and dropping debris into the case. The cheapest solution was to find a used motor to put in. If there's no damage to the piston, you might be able to repair the head but that valve bouncing around usually does a fair amount of damage.
- Q: We just got a new washer and cannot remove the old hoses from the pipes with the shut off valves on them. I don't want to bend or break anything. any suggestions?
- Use a monkey wrench they are probable on pretty good if they are old this should do the trick for you.
- Q: ok im buying an aftermarket blow off valve for my car. the car itself is taken apart completely and i have no idea wht vacuum lines go where. i know tht the top nipple of the bov has to be connected to the throttle body but it has 5 lines. does it matter what line is connected to it?
- Don't do it. First of all, if you knew enough about turbo charging or supercharging, blow off valves, bypass values, hooters, etc., then you would have known we need to know the size of engine, model of turbo, piping diameter, etc. The actual control lines are not that complex. By using your tongue you can tell what each line is ported to, and then you just need to know if you blow off valve is operated by vacuum or lack of vacuum. They make both types. And your throttle body will have ports on both sides of the plate. And yes, it does very much matter. Turbo charging is not for the novice to fool around with.
- Q: I had the EGR valve and solenoid replaced and I'm not sure they needed to be replaced.
- The EGR valve diverts exhaust gas back into the intake manifold to take up space and prevent the formation of NOx, a polluting gas formed inside the cylinder at temperatures above 2500 degrees.
- Q: I have a training I will be attending on Valve actuator and subsequently an exam. I need fundamental knowledge of ROV. What are the types of ROV. The Maintenance Of ROV ? and the different Type of ROV actuators
- Hi. We know that a valve is a device which controls give direction to the flow of fluid in a passageway. They can be manually handled or remotely handled. To remotely control a valve you have to use an actuator mechanism. Bjy this mechanism, we can control the valve from outside the body. Some valves control themselves from inside the body. Ex. Check valves or Relief valves.
- Q: Ok , I am looking for a valve of some sort that is small (1/4 inch), that has high flow preferably lets all the air out at once.This is for a air cannon type thing. lol
- It is not the type of valve that is your problem unless you are making a very small one to shoot frozen blueberries it is the small size of the 1/4 valve and its piping. Various Spud Gun plans show 3/4-1 1/2 piping with ball valves as well as with RainBird Solenoid (quick-opening globe ?) valves. These typically have 1 1/2 -2 barrels.
- Q: this question is related to Ball valves, In actuated valve for the selection of actuator we need differential pressure across the valve so I wanted to know that what is meant by differential pressure?
- Differential Pressure Definition
- Q: Okay, so veins have valves to help counteract the pull of gravity. I'm wondering, do the veins in the head have this same adaptation, seeing as these veins are simply bringing blood down to the heart, and are not pulling against gravity.
- no
- Q: My doctor detectd a heart mumer. I am 48 years old. Had a echocardiogram performed. He says that I have a sightly irregular valve and I do not need to take precautions. I run three miles a day. I have heard that this condition makes your heart more suceptiable to infection. You should take antibiotics when dental work is done. My GP is a man of few words. Just says continue as usual and nothing needs to be done unless there is further symptomns. My question: Should I follow up with a heart specialist or would it be over doing it? Should I go on antibiotics when I get dental work? Can this Slightely irregular valve get worse?
- I genuinely have a coronary heart murmer which i grew to become into clinically determined with while i grew to become into born and it hasn't made any issues for me. The scientific institution can provide her an echocardiogram which will enable them to verify the quantity of the middle murmer whether it particularly is maximum possibly to be an harmless murmer which will require no therapy and because having mine clinically determined at delivery i've got no longer mandatory to have mine checked till i've got been given pregnant and had to have a repeat echocardiogram because of the fact they lost my previous outcomes!!
- Q: Would a 96 saturn egr valve work on a 96 camaro
- A EGR valve is a simple ball/check valve. The only two connections are the hose from the intake manifold and the grommet the valve pushes into in the valve cover. If it fits, it fits. They're only a couple of bucks, so you'll waste more time monkeying with it then just buying the correct one.
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Full Welded Forged Steel Ball Valve DN 22 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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