Full Welded Forged Steel Ball Valve DN 16 inch
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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 are a sing of a bad Idle control valve, will this cause bad mpg?
- No, the valve is there to provide a steady idle regardless whether the transmission is in gear or the air conditioner kicks on. If the Idle Air Control (IAC) valve is not working right the engine will usually idle low and try to stall, although it can also cause high idle.
- Q:I keep the tire pressure in my tires at approx 40 lbs per tire. I have an inexpensive tire gauge that I use to measure the pressure. Recently, one tire seemed low, so I measured the pressure and the batteries were dead in the tire gauge. I replaced them and measured again.It said 20.5! I thought I was going crazy, but then measured all the other tires and they were around 35 to 40. I filled up all the tires to about 40, but when I measured the weird one again, it said only 30!The question is, could there be a problem with the tire valve that is preventing me from getting a good measure of the pressure? I filled up the tire to where it looks really filled up, and I'm afraid to overfill it. I'd like to get it to 40 lbs but I don't know if it's already gt; 40 lbs with a tire valve problem. Or if a tire that's at 20 pounds can look so filled up that you couldn't tell it from a tire that's at 40 pounds?Any info would be appreciated.
- Get rid of the battery powered one try the old mechanical pressure one. 40 psi sounds a bit much unless it's a truck. On the drivers door, there's a sticker which says what the pressure should be for that car w/ that size tire on it. I advise you follow the recommendation. The vehicle was designed w/ that tire in mind to get the best performance fuel economy. If the valave is bad, simply change it out. Go to a professional tire store before you do that. It could be more than you think.
- Q:.The valve behind the toilet is spewing water (we have connected a hose to it and have it emptying into the tub). When we try to shut the water off from that valve, the knob or turny-thingy (the name escapes me right now) just turns and turns correcting the water flow slightly, but not shutting it off.The problem it that we can't find the main water valve outside the house. What am I looking for please?!? Also, we shut a valve off in the garage, but it was for the hot water.Help!
- find the house water meter located a the edge of the street in your yard and turn the main valve off
- Q:Its stuck to an angle where the metal parts of the wheel block the air pump from letting it secure itself around the valve so i cant put air in, it all comes out the sides, i dont want to have to replace anything for i dont know much about bikes, but any solution to my problem? Thanks
- What causes the valve stem to get like that. is from riding it with an almost flat tire with very little air in it. . Let the all the air out of the tube ,. pull and tug on the tire to rotate it on the rim until the valve stem is standing strait up again. Then refill with air. But often when you ride with low air, it ends up making a hole in the tube.
- Q:what to use to inflate self sealing tube with the presta valve?
- Gazoo If you do not have a pump that will accept a presta valve, then you can either buy a presta schrader pump, or a presta valve adapter. I have an adapter in each of my seat bags, they are only a buck or so, and will allow you to use service station air on your trips. Just cause you may not know, the presta valve has a rotating screw inside the valve. So to add or release air you must take your fingers and twist on that knurled circular end so that the presta valve extends away from the valve stem. Then when the tube is filled, twist it back tight to seal it off. Soccerref
- Q:Hello, I have a 1990 BMW 525i.I would like to paint the valve cover where the BMW was written between a set of lines.I think I require a heat resitant paint for doing this.Can anyone advice the brand which will be best suited for this job.Is it advisable to chrome plate the valve cover.?with regards,natarajBahrain
- go to a auto parts store and buy engine paint. It will be a high temp paint and will withstand the engine temp.
- Q:Can sum1 tell me how i can tell if my valves are in the right place?I notice there are holes in the valves, please explain how those holes are suppose to face to for each of the 3 valves?
- Put the correct valve in the valve case. (There is usually a notch that guides the placement, but it is not always accurate enough.) Blow gently into the trumpet, (you don't need to play, just blow as you do to clear the spit valves). If you feel a resistance, rotate the valve until the resistance is gone. When there is no resistance with the valve up, depress the valve and blow again. There should be no resistance there either. Repeat with each valve.
- Q:I was looking at the specs on my audi a4 and it said 30 valves and I was looking at a few other cars and they said 24 valves. What do the valves determine? Whats the difference if the car has more valves than another?
- Number okorder /.. The picture shows circles inside circles. Think of the larger circle as the cylinder and the smaller ones inside, as valves. In the first one the open area of the valves is 50%. In the second one the open area of the valves is 62%. In the third one the open area of the valves is 68%. And in the fourth one the open area of the valves is 69%. The more open area, the less restriction to flow. This means your engine will pull in more air, which provides more power.
- Q:What is the best procedure to check/adjust valve clearances? This engine is a perkins diesel inside of a cat generator. I know that he exhaust valve is .018 and the intake valve is .008.
- take off the valve cover(s) and your will see the valves. you will need to turn the crank so it will be top dead center(there should be a mark on the crank and a mark on the engine for checking the clearances. then whatever ever cylinder you are checking the vavles on are top dead center, use the feeler guage and make your adjustments.
- Q:My cardiologist says I have Mitral Valve Relapse. She says MVR is when there is a backflow of bood entering the heart. When I checked online for MVR, I couldn't find anything except MVP (Mitral Valve Prolapse). What is MVR and how is it different than MVP?
- I believe you DO mean MVP. You probably misunderstood your cardiologist. Prolapse is a deformation of the valve in which valve does not completely close, causing a back flow of blood into the atrium. In most cases this is relatively benign and in fact, occurs in about 10% of people. In severe cases, you may need a value replacement, but usually this occurs at birth or after a disease damages the heart.
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Full Welded Forged Steel Ball Valve DN 16 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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