Full Welded Forged Steel Ball Valve DN 36 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.
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 


 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:If you need to shut off a valve, but it is stuck and it won't turn,?
this is something to try, but if it doesn't work, you are going to need to call in a pro for help.
Q:Turning on the main water valve?
It might take a few seconds (not minutes) to get water to a faucet in the house if your house valve has a drain back feature (house water flows backward to empty the pipes so they don't freeze in winter if you leave (for Arizona or Florida!) and turn the water off.) I turned my water off this way once and called the water company in a panic fearing I had broken a pipe when water started bubbling up through the ground. { Hey, it's funny now. } [Was advised to only use main shutoff at the road in the future.] My house valve under the front water faucet is seen by a 1/2 (or so) square metal stick barely sticking out of the ground. Use vise grips or correct size wrench to grip and turn. Good luck.
Q:What are two problems assosciated with faulty heart valves?
This Patient Guide is written for the loved ones of heart patients who are dealing with the short-term stress that comes with a test, procedure or recent diagnosis of heart disease. It explains why support is so important to a loved one with heart disease. It also offers practical strategies on how to support a loved one while also taking care of yourself.
Q:Replace Heater Control Valve Honda?
You have to take the whole dash apart. Not an easy job, and definitely not one for a novice.
Q:moderately leaky heart valve?
Dont worry, its only moderate so you should be fine. Yes you should go to a pediatric cardiologist to get checked over and get an echo, and ekg and probably a chest xray. They will tell you everything you need to know, its ok dont worry! Im 16 years old also, i have Aortic stenosis(narrowing valve) Aortic Regurgitation(leaky valve) bicuspid aortic valve(only 2 leafs instead of 3) and Enlarged aorta(aorta is getting bigger) and im ok! My stenosis is moderate, my leakiness is moderate, my enlarged aorta is mild. And i have not had surgery yet, im totally fine, i just cant play contact sports because of the enlarged aorta. You should be fine! Email me through my profile if you have any questions
Q:How to adjust lawn mower valves?
when a valve is closed there should be a gap under the valve stem and push rod that's the adjustment, when a Valve is open the push rod is against the valve end so you cant adjust it while its open i would set them at 10,thousands to allow for heat expansion
Q:Damaged water valves will not close?
Just shut the water off to the house and then you can change the faucet without having to mess with the valves. If you want to shut off the valves though just use a pair of chanel locks to turn them once you break them loose they will turn easier. If the handle breaks off it no biggy, it wont hurt the valve any, you just wont have handles but they dont work anyways right.
Q:PCV valve on 98 Eclipse?
Your okorder.com okorder.com, which covers all Eclipse/Talon models.
Q:Is a EGR valve needed on a Pontiac Bonneville 3.8 liter?
I have a 1996 Firebird with the same 3.8L V6 motor. I recently had to have the EGR valve replaced, as well. I am not sure- but I think that the EGR valve has to do with the emissions. It may not pass an emissions test if the EGR valve has been bypassed. If you have to have it replaced, it probably won't be that expensive. Good luck. EDIT: here is an explanation of what an EGR valve is, and what its function is, thank you to this gentleman named Shovelkicker for providing an answer elsewhere in 'answers.' This was not my own post- this mechanic whose name is Shovelkicker wrote this explanation, which was written about one year ago in response to another individual's question regarding what an EGR valve is. (The) EGR valve is the Exhaust Gas Recycling valve. This is for when a motor is cold and needs extra fuel to keep running. Back in the days of chokes you would restrict the air going into the carburator to make the car run richer. With fuel injection cars more fuel is added to the engine to richen the mixture. This richer mixture causes the exhaust to have unburnt hydrocarbons, meaning not good for the environment. The EGR opens and allows some of the exhaust to be added back into the intake to be reburned. Once the engine warms up to operating tempurature the EGR closes. The EGR should be a UFO looking item about the diameter of a big coffee cup. Should be brownish metal, lightly rusted from the heat. A a steel pipe, around 1/2 to 1 inch in diameter, will run from the EGR to the exhaust at the back of the engine. Some EGR valves are on the front of the engine, some at the rear. Most frontwheel drive cars with will be right above the exhaust manifold on the front of the engine.
Q:Blow off valve or cold air intake?
a cold air intake will produce more hp and tourque while a bov will help release back pressure on a turbocharged vehicle. ive got a 1.8l turbo and i went with a cold air intake. then again i was going for more hp. also the bov will produce an awsome release of air into the atmosphere. then again if you get the air intake like i did you will hear the wastegate on your turbo make that same noise. and trust me itll make some ppl think you got major hp under the hood. so if you want the hp and the sound get the intake if you want the sound but are satisfied with the hp get the bov. intake will also help mpg's to.

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