Full Welded Forged Steel Ball Valve DN 40 inch
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- TT OR LC
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- 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 assembled my new gas grill, but I'm not sure if the burner pipes (aka venturi) are properly connected to the valves. My assembly matches the picture in the instruction manual, but I'm not sure if the seal is tight enough. How do I know? Do I attach the propane and test? I'm concerned about the safety of doing so. Thanks!
- You should call the customer service number on the paperwork that should have came with the grill.
- Q:Water has been seeping out of the sprinklers closest to the anti-siphon valve. Water seeps out of the sprinkler even when the anti-siphon valve is manually closed and not connected electronically. I opened up the anti-siphon valve to inspect the diaphragm, but there is no debris nor it was damaged. To be sure, I switched the diaphragm chamber of the two anti-siphon valves (a suspected leaky one and another good working one), but leak persists from the same sprinklers. I think the leak is from the (float?) rubber seal at the bottom of the stem closing the inlet valve. My anti-siphon is a Hardie (or Irritrol) model 311A series.1) Is my troubleshooting and logic correct? What other components could have contributed to the leak described? 2) At what scenario will water be flowing out of the anti-siphon cap?3) How can I determine if my anti-siphon valve has a vacuum breaker? What is a vacuum breaker good for?4)Which brand makes the most reliable anti-siphon valve?
- If the antisyphon valve is not leaking maybe you should focus attention on the main valve ( assuming it is a solenoid valve) to see if it closes completely. Another thing, if the irrigation zone is on an incline then the water in the system will drain to the lowest point. Sometimes it drains slowly causing the impression of a leaky feed valve.
- Q:Specify eight technical requirements that you would consider important, when deciding upon a particular control valve?
- 1] I assume that by control valve you mean a variable orifice valve, not an on/off valve. 2] An answerer to your other question listed Metallurgy, temperature, pressure and shutoff requirement To which I note that if you need a tight shutoff you should not trust a control valve to do that, but should add an on/off valve in series. Also, metallurgy covers corrosion requirements but not obviously so 3] To which I add: flow rate [or Cv] and pressure drop fail open or fail closed response time signal input [3-15 psi, 4-20 mA, 1-5V, etc] connections [ie, fitting type] packed vs sealed might need to look at hard seat materials and/or replaceable seats, to control erosion reliability, ease of maintenance, availability of spares, timing on that vendor permanence [ie, are they entering bankruptcy ?] Cost
- Q:i just bought a junky trumpet, didnt come with a mouthpiece... how can i tell that the valves work? They press in and dont stick, but im not sure about their functioning. Also there are no caps on the valves, will this affect playing? lastly, it has a stuck tuning slide, how can i get this to work again?
- whilst i develop into in intense college, I performed on a 3C and had a particularly good sound. in my view, i could in no way visit a smaller, shallower mouthpiece to play intense. i could quite develop my chops and be waiting to do it on a deeper mouthpiece. In college, I switched to and nonetheless at present play a Monette B2, that's analogous length to a a million a million/4C, and characteristic an excellent sound, and might play a intense G (4 ledger lines above the staff) and up on it. i exploit it for any group I play in, marching, stay overall performance, musical theatre, etc... ultimately it boils all the way down to private preferrence. %. the mouthpiece that feels the terrific to you and nonetheless can provide a good sound. you do not pick it so great and deep that your variety and sound go through, and you do not pick is purely too small and shallow which you get too outstanding and tinny of a sound. wish this facilitates.
- 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
- Well, the biggest risk you may have upon getting a tattoo is an infection. And of course if the tattoo is done at a reputable licensed shop the chance of getting some sort of infection or virus from the tattoo equipment is minute. The biggest chance you would have of an affection is during your after care. You are at no greater risk than the next person of getting an infection. But, if you do get an infection could be worse consequences. I will never advise someone to against what there doctor tells them. But if one doctor says it is ok then the next says it is not then maybe tattoos and piercings are just something that doctor is not fond of to begin with and allowing his personal opinions influence his medical direction or counseling. In the end it is your body and it is your decision. Should you take extra precautions? Sure. See if you can get some antibiotics prescribed and begin taking them a couple days before getting your tattoo. Tell you are planning a visit to the Dentist and have prescribe some antibiotics for you if you decide to get a tattoo. If you do, be sure to follow the artists instructions on after care procedures and to be sure to ask any question of him you may have concerning after care.
- Q:I have adjusted the valve clearance twice, I still have a noise on the #2 cylinder intake. What might be causing this?
- Assuming that you have adjusted the valve clearance properly, there are still a few other things that can cause valve noise: a) cam lobe wear as already mentioned, b) valve sleeve/guide wear c) wornout/necked valve stem d) wornout rocker arm (lobe or sleeve) e) wornout rocker arm shaft f) weak valve springs
- Q:I am buying a 2004 Ford Taurus tomorrow and want to know the difference between a 24 valve V-6, and 12 valve V-6...Now besides the obvious difference in the # of valves...Is one better then the other???
- The 24 valve has 2 intake and 2 exhaust valves when the 12 valve only has 1 intake and exhaust per cylinder, the 24 would give u more power but will most likely use more gas.
- Q:Does anyone know where i can get a chromed valve cover for a 99 eclipse or is there a way that i can do it myself? id like to get one that has the etched 2.0 and DOHC words on it
- You can have it dipped in chrome and detailed for the lettering. It pricey but its the best way or you could try finding chrome spray paint that is good up to 500 degrees and do it yourself but it may not look as good.
- Q:I am trying to replace a leaky valve stem. And I didn't know how to get to the valve core and when I get there how do I change it? The charge is recovered. It is a 2000 Impala. Thanks in advance.Noah
- William H you are correct and sometimes there is a pressure switch screwed on the hi port. We must of went to the same classes ,and read the same books, over the years. Mike S You had said the belt was bad. It said NO POWER TO A/C, you know better then that! I have taught many techs both older and young. The older techs think they know it all WRONG. But you know what there is not one guy that leaves my class, who is not smarter.
- Q:Whilst pumping up my new tubular tyre, the head of the presta valve snapped off! Because this is a tubular tyre, I spent a lot of time (and cash) gluing it on and applying it etc, so I'm reluctant to buy a new tub. Is there any way getting a new presta valve head without replacing the whole tyre?Thanks in advance.
- Your broken valve will hold the air, but next time you pump air, the little screw will go into the tube and cause more damage. Replace it ASAP.
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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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