Full Welded Forged Steel Ball Valve DN 20 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
You Might Also Like
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: Okay, I got a 347 stroker and I noticed a spot that was leaking under one of my valve cover gaskets. So I went ahead and bought new gaskets. But before I replaced the gaskets I noticed that my valve cover bolts wasn't tight. So I basically went out for nothing and get new gaskets. Anyways since I couldnt return them, I went ahead and changed the gaskets. And I tightened all of them pretty tight. And I noticed that I still have an oil leak at the same valve cover gasket at the same place. Why is this? I also used cork gaskets, did I tighten them too hard? How hard should you torque valve cover bolts/
- cork gaskets have to swell use rv gasketseal around bolts and corners
- Q: heater control valve is leaking
- Honda guy has the terrific answer, yet I also have a pair issues to characteristic. whether that is like my daughter's 1993 Accord, that is extra handy to do from under the vehicle than above it. if so the converter warmth safeguard is close by and it badly decrease my wrist whilst i attempted to get the valve hose off the heater center - placed a rag on that depraved concern. Be very mushy whilst wrestling the hose off the heater center pipe that sticks interior the process the firewall - the pipe is skinny brass and easily deformed. that is terrific to diminish the hose lengthwise and peel it off, and wait and notice. you will opt to interchange that little bit of hose besides. EDIT - one extra concern. After refilling the coolant, discover the nipple (in all probability on the thermostat housing) for bleeding the trapped air out of the cooling device. Open it a million/2 a turn and close it whilst a mushy flow of coolant comes out. correct up the radiator - keep in mind, constantly use ideal coolant diluted in accordance to instructions with purified water, under no circumstances faucet water. existence is sturdy.
- Q: I have a question over my car. When a valve cover gasket(s) has a leak, will it still leak even after car has been off for a few days. It has also been starting to smoke after it has been on for 5 minutes. I don't move it. Thanks.
- Valve covers leak and the oil runs down the motor so it can drip off of the motor while sitting. The oil also gets on the exhaust manifold which will smoke even with a small amount of oil dripping on it. It's a fire hazard and doesn't cost much to repair.
- Q: wut is the purpose of this valve on tanks and on piping? explain wut the vacuum part does and wut pressure does? thanks
- The pressure relief valve is to protect a tank or piping from rupturing from excess pressure. A vacuum relief valve would prevent tanks and piping from collapsing from too little internal pressure.
- Q: After shutting off the hot and cold water lines to my washer to remove the unit from my laundry room i noticed a small leak coming from the hot water valve as if the valve is not completely closing. The valves themselves should be roughly 10 years old and were extremely tight when attempting to close them, my question is how big of a job is this to replace the water valve? Is it as simple as turning off the main water to the house and replacing the valve or are these typically soldered on? Currently i just ran the hose for the hot water to the drain line to prevent water from leaking onto the floor so is this something that is a fairly non issue once i hook the lines back up to the washer and turn them back on? Or is this something i should get addressed asap?
- Laundry Water Valve
- Q: Hi, I have Orbit valve for a section of my yard. The pressure is really low when I turn it on with my remote. When I turn it on manually at the valve, the water pressure is much higher.
- Its possible the valve stem is corroded with stuff not letting it actuate properly open. Turn water off and unscrew the valve then actuate it electrically while watching for a full stroke. Make sure flow control is all the way open when inspecting valves stroke. Remember where you had it set when done or readjust. Also check the solenoid for corrosion and clean linkages. I would clean and coat with petroleum jelly. My guess is valve seat is gummed up so lube the stem and work it manually till it slides open and closed easy then test with the solenoid. Good luck!
- Q: 1991 Buick Spirit smokes early for five minutes in morning, from exhaust. Tried every carburator and gas cleanative fluid. Mechanic says Valve job'.
- Probably just the valve stem seals need replacing. NOT a entire 'valve job'. The seals help scrape oil off of valve stem to lower the amount of oil weeping into cylinder when engine is running or turned off. As the rubber ages, it cracks and loses its elasticity and doesn't wipe the stem properly. This is a lot cheaper versus a full 3-angle valve job which requires removal of the heads.. Get a second opinion.
- Q: how do you adjust the hyd. valves when motor is running?? thanks, jerry swain
- that's puzzling to discover 0 clearance even as the lifters are not any more pumped up. it truly is how I actually have continuously lashed small block chevys, even with the actual undeniable actuality that it may get messy. get rid of one million valve hide, start up engine. Tighten the first rocker nut till the push rod stops spinning lower than the rocker. Then decrease backpedal a million/4-a million/2 turn. Repeat for each and each of the others. This works nicely with new valve practice factors to boot to boot used parts. the downside is oil would drip on warm headers.
- Q: I am having a leaky valve is that normal? the doctor said that it is normal what do i do?
- Like most everything, there are degrees of valvular leakage. A valve can be leaking a lot or a very little amount. Valves are a biologic mechanism and therefore are not precisely manufactured with some areas that don't ideally fit, leading to minor leakage. If you were to take 100 random people off of the street and do an echocardiogram, the vast majority would have one valve or the other that had at least some trivial leakage. Therefore if the majority of people have the same thing and it is not a pathological process, it is essentially normal. Next, certain valves leaking are much more important that other valves. Moderate leakage of the tricuspid valve for instance is not a particularly important finding. But moderate leakage of the aortic valve is a very big deal that requires close medical attention. In sum, valves with trivial leakage do not require serial exams for follow up or any special measures like antibiotics before dental procedures. Since this is such a common finding, it is reasonable to consider this a normal finding. Not knowing precisely what the result was on your echo, I can not specifically advise you. At your next doctor's appointment make a note for yourself to ask him/her for clarification. Good luck.
- Q: What do I do to make my valves stop ticking? And what makes them tick? its a 94 Acura Integra with a 91 LS motor, 105,000 miles. If I get a new engine head will it stop ticking or the ticking has to do with the block?
- The valve lash is supposed to be adjusted like every 60k. Your's might need it bad.
Send your message to us
Full Welded Forged Steel Ball Valve DN 20 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
Similar products
Hot products
Hot Searches
Related keywords
