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:what would happen if valve was not adjusted right? and please explain
- the valves of the cylinder head let fuel in and exhaust gasses out as well as closes off the combustion chamber of the cylinder head allowing the engine to build compression for the firing of the cylinder. improperly adjusted valves can cause a list of problems. one if to tight of clearence is set the valves will not seat all the way and compression will be low as well as to much fuel and so forth. other issue is that it is hard on the camshaft lobes. too loose of a clearence the valve will not open up far enough to allow the appropriate amount of fuel in causing a run issue as well as not enough exhaust gas being pushed out.
- Q:Can anyone tell me what to do if i know that I have the type of valve stem that was recalled TR413chrome?? Will they replace them for free since they are a recall or do I have to dish out some more $$ to fix the problem??? The company that sold them to me is in Florida (Wheelmax) and I am in Mass. Not sure what to do to avoid having to pay out more $$ to have them replaced...any help is greatly appreciated
- You okorder
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- I was wondering why the flue is clogged? I've never had to clean mine. Well anyway, I use a shop vac to vacuum out any dust or rust that accumulates on the gas valve on the rare occasions it failed to work,and that fixed it every time.
- Q:What are better valve cover gaskets for a car? Cork kind? Or the rubber kind? Or either rubber/cork kind?
- For the inexperienced I would choose rubber it is harder to mess up by overtightening and if you clean the surface it will seal good
- Q:Hey, ive got a scooby and have a baileys dump valve that is a loud deep wooooosh sorta sound. What dump valve does the more high pitch sound? also they dump valve with the higher pitch seems to need less presure ta dump, mine needs alot of pressure before it will dump loud?
- if i remember rite you can adjust the control settings for your dump valve so that it will dump at a lower pressure and a lower pressure dump should also give you the sound that you are looking for.
- Q:What is motor operated valve (MOV) please answer me if anybody have experiance in instrumentation filed, please explain overhauling and troble shooting
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- Q:What is it for? I was given a data set which is a result of antisurge valves testing every 2 seconds or so. (more than 1000 rows, measurements by time) I have no idea how to start analysis of the data like that. Can anyone help?
- An anti-surge valve is a valve that automatically opens to produce a flow through a centrifugal compressor to prevent surging of the compressor at a low flow rate. At surge conditions, there is no forward flow in the compressor and the compressor shaft will move foreword and backwards against the thrust bearing. This is damaging to the compressor and causes a terrible noise, that once you hear a surging compressor, you will never forget it. On an air compressor, the surge control valve will discharge to the air through a muffler. For process gas, it will discharge to another part of the process. The answer to your question depends on whether the data relates to the flow through the anti-surge valve of the compressor. It could even be a record of how fast the surge control valve operates. Based on this, no one can give you an answer for certain. TexMav
- Q:I need the valves that I need to press down for the notes on the bass stave. Can someone please write them down for me in a list like this?F = openG = 1 and 3A = 1 and 2 etc.Thanks people.
- del_icious_manager's reply is right, but it doesn't go far enough. In order to provide a fingering chart, we need to know not only the fundamental pitch of your tuba (BBb, CC, Eb or F), but also how many valves it has. BBb is referred to as Double B-Flat, and CC is Double C. They're called this because the fundamental pitch is an octave lower than a trombone of the same pitch, which means that the bore of the instrument is double the length. Many student level BBb tubas have only three valves. Most advanced and professional level BBb tubas have 4 or 5. (I own three BBb tubas, and each has 4 valves.) CC tubas are less often used by beginners, and most have at least 4 valves. I own one CC tuba, and it has 5 valves. Eb tubas are most widely used in British-Style brass bands. In the USA in the early- and mid-20th Century, it was common to start beginning tubists on an Eb instrument in elementary or junior high school, and then switch to BBb tuba in high school. Like BBb tubas, many student or beginner level Eb tubas have 3 valves, while those used by more advanced players have 4 or more. (My Eb tuba has five.) Tubas in F are generally used in orchestral settings, primarily for Bass Tuba parts as opposed to Contrabass Tuba parts, though the labeling of the printed parts is not consistent. Most F tubas I've seen have at least four valves. (Mine has 6.) Tubas with additional valves have a low range that extend beyond the range of an instrument with fewer valves. The additional valves are also used to play certain notes better in tune. But for an actual fingering chart, please let us know the key of your instrument and the number of valves.
- Q:Where do I get a electric valve with a 120 VAC coil
- ASCO okorder is another vendor, though Grainger is good. If your budget is tight you could remove one from a dead dishwasher or washing machine.
- Q:I want a valve sound that is clean and 'true', but I also want pre-sets. Someone said that digital pre-sets distort the valve sound.
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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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