Full Welded Forged Steel Ball Valve DN 26 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:What are valve ticks?... Honda fourtrax.?
You certain its a valve noise and no longer an exhaust leak up near the head? They can sound very equivalent. If it's a valve noise the very first thing to check for is oil stress. Due to the fact you say it can be good maintained I have to expect you have changed your oil AND filter at the recommended intervals. Let me recognize, i know probably the most prior shadows had a unconventional hydraulic valve procedure where you had to force oil right into a chamber for the lifters. In case you misplaced that oil the lifters do not operate accurately.
Q:How to control fluid flow through a valve automatically? What are the circuit requirements?
Some valves are controlled to maintain a fixed pressure on a system. Others control the level in a tank or vessel while still others actually control the flow rate in a pipe or line. The automatic control of flow through a valve requires a sensor to determine if flow is needed or what the flow rate is. You then need a controller to take this input and then adjust the valve to achieve the desired result. This is called a control loop. Some are all electric/electronic while others are all pneumatic. The valve itself is a specific valve designed to perform the function intended. It is not a good idea to take an existing on/off valve like a gate valve and try to control flow. These type of valves do not have a flow characteristic that is proportion to valve opening while a control valve does.
Q:2 leakages in one of the valves in my heart?
What okorder.com/
Q:Bovine or Mechanical Valve for my Mitral Valve Replacement Surgery? Experienced people, please help!!?
Mechanical valves require lifelong anti coagulation. This can cause problems of compliance (Forgetting to take the medicine), longer time to heal for cuts, and potential internal bleeding problems especially for women. They have a very long life. Current bio prosthetic valves have improved considerably in durability. They do not require continuous anti coagulation. They do tend to calcify. This may not be a problem 55 years and above. These valves also have better blood flow characteristics. These are the general considerations. Individual bio chemistries vary widely. Your surgeon and cardiologist are the best fit to suggest what is best for you.
Q:does the pcv valve help my transmission shift?
no, i'm prety sure the pcv valve is to help the engine run smoothly. or something that has to do with the engine, i really dont think that is related to the tramsmission
Q:What Does It Mean To Need A Valve Job On A Car?
i own a repair shop and what they mean when they say this, is that the head is taken off if it and the valves re-ground,and re-seated,and new seals put on them what this does it re-stores the compression on the upper end of the engine back to where it should be,as long as the piston rings aren't worn out in it,this usually works well,in some cases though it will make an engine start using oil,because it puts pressure on the upper end of the engine,and if it has any weak rings in it,this will make it use a little oil so be careful if you buy this one,keep in mind that a vale job doesn't always help one,it might run better,but can use oil later on ,this happens occasionally ,especially on higher mileage vehicles,and the cost of it would be around 600 bucks ,so make sure this car is worth it before you buy it,good luck with it hope this helps.
Q:Question about valve cover gasket?
maybe so.some valve covers have stops built in to keep you from overtightening and cutting the gasket,some dont.if you used silicone,and it didnt set up,youll never hold it now.
Q:which valves on the mc are the outlet valves?
All hot water heaters have what they call Anode Rods For more than 60 years, it has been used as a key part of the rust protection of a tank. The rods are made of magnesium or aluminum that's formed around a steel core wire and is screwed into the top of the tank. A lot of the times they are on the hot water outlet. You should have a dielectric union separating the galvanized pipe on the top of the water heater from the copper pipe for your house supply. You should be able to remove the anode rod from the tank and get a replacement from your local plumbing supply store. Most likely the sediment/ hard water deposits have deteriorated the rod and have caused corrosive deposits to clog your lines.
Q:brake proportioning valve?
Yes The valve causes your rear brakes too apply before the front brakes .Safety reasons,(If your fronts apply first chances are the rear of the vehicle could come around on you) It utilizes spring pressure and offset valving. There is a rubber button that you must depress to bleed the rear brakes It's an override.
Q:Faulty EGR Valve on 88 Toyota?
Hello, The EGR valve will not spray oil, It is an exhaust gas recirculation valve that does not have oil get to it!! Please add more info so we can better answer your question . Thanks for additional info. But I don't think you know what the EGR valve is. Engine oil should not be spraying from the EGR valve ! Maybe you are trying to describe another part? Also, You need to fix the wheel cylinder or caliper before you can bleed the brakes. Maybe you need a mechanic to assist you. Good luck !

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