full welded forged steel ball valve PN 10 Mpa

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10 pc
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100 pc/month

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Product Description:

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 

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 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:how to check valve clearances?
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:EGR Valve 2nd Question please...?
won't be able to help precisely yet this is a image of it so do the the place's waldo with this hyperlink. it is in lots of situations linked to the intake manifold the PCV is on the valve conceal and all vehicles from approximately seventy 8 on have EGR's
Q:how man cups does the miteral valve have.....?
Mitral valve has two cusps. The blood flows from the lungs, where it is oxygenated, into the left atrium then through the mitral valve into the left ventricle. From here it flows through the aortic valve to the rest of the body. Two cusps, oxygenated blood.
Q:valve adjustment?
w/ one hand spinning the pushrod and the other tightening the rocker arm nut, tighten the nut until you can not spin the pushrod freely, then tighten it three quarters of a turn more. do this to all of the rocker arms that do not have pressure against the valves, then spin the motor 180 degrees, or until the rest do not have pressure against them, and do the same thing.
Q:Insufficient flow EGR Valve?
Could be dirty, or it could be the egr solenoid failing
Q:what is diferent between FB ball valve and RB ball valve?
These okorder.com
Q:Mondeo egr valve problems?
Think okorder.com. Go on line an read: Function EGR Valve before you ruin the engine with a block-off plate.
Q:Need help finding a specific valve...?
The leading maker of solenoid valves is ASCO. Their website is shown below. If a valve that fits your application exists they probably make one. If you can't find a suitable solenoid then you need to consider a pneumatic valve operated by a solenoid valve. That is a common solution for a problem like yours. As to the male connections. If they are not available then you can just use a pair of threaded fittings (pipe nipples) to change the configuration.
Q:Where is the EGR valve located?
complicated point. do a search using search engines like google. it could help!
Q:Leaky Valve?
yes. surgery. otherwise you'll have murmurs either all the time or occasionally depending on the leakiness. you must certainly see a doctor. there are no external treatment for this because protein will be used for muscle and other such things. your heart valves are formed while still fetal and grow with your body for about 30 years. repairs almost completely stop at 15 because stem cells are rareified. this is why scientists look into stem cell research. i cant remember who but the japanese fellow that cloned the first dog also started research into stem cells for the heart and was not only able to repair the hearts of frogs, sheep, mice, pigs, etc. but he also grew a fully functional human heart in a pig with all but O+ blood types. basically just talk to a doctor and poke around. your heart is literally vital. dont mess around or hold back for any reason. search until you are better.

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