Metal-to-Metal Seal Ball Valves

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Metal-to-Metal Seal Ball Valves

Metal-to-Metal Seal Ball Valves are usually used in the industrial controlling pipeline services of high pressure, high temperature, severe corrosion and solid material containing industry, such as coal chemical, polysilicon and vitriol/ nitric acid. The leakage rate of metal-to-metal seal control ball valves can reach rate V. Top flange is designed per ISO5211 for easy amount various type of actuator.

Design Feature of Metal-to-Metal Seal Ball Valves

1. Metal to metal seal design between ball and seats

2.Double block and bleed

3.Cavity pressure self relief

4. Blowout-proof stem

5.Seat designed with dust-proof and automatic cleaning function

6. Antic-static

7. ISO 5211 top flange

8.Optional various actuator

Product Range of Metal-to-Metal Seal Ball Valves

Type:Floating and Trunnion mounted Ball Valve

Size : 1/2~24"(DN15~DN600)

Rating: 150~1500LB(PN16~PN250

TemperatureRange: ≤450℃

Body Materials: Carbon Steel, Stainless Steel, Duplex Steel

Trim : Carbon Steel, Stainless Steel, Duplex Steel

Operation: Electric, Pneumatic, Hydraulic, Pneumatic & hydraulic double acting

Metal-to-Metal Seal Ball ValvesMetal-to-Metal Seal Ball Valves

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Q:Daily maintenance of ball valve
The new parts need to be cleaned before assemblingThe assembly should have metal fragments, fiber, fat is not allowed (except the requirement to use) dust and other impurities, foreign matter contamination, adhesion or remain in part into the cavity on the surface or, if the packing is micro discharge, to lock the stem nut.Note: do not lock too tight, usually lock 1/4 circle to 1 laps, the leak will stop.(A) disassemblyMake the valve in a half open position, flush and remove dangerous substances that may exist inside and outside the valve body.Close the ball valve, remove the connecting bolts and nuts on both sides of the flange, and then remove the valve completely from the line.In order to remove the drive - actuator, a connecting bracket, lock washer, stem nut, butterfly spring, glam, wear plates, valve stem packing.Remove the body cap connecting bolts and nuts, separate the valve cover from the valve body and take off the valve cover washer.Make sure the ball is in the "off" position, which can be easily removed from the valve body and then removed from the valve seat.A hole in the body downward nudge stem until completely removed, and then remove the packing ring and the O.Caution: Please operate carefully to avoid galling, stem surfaces and body packing box seals.B) reassembleCleaning and inspection of the parts removed, it is strongly recommended to use spare parts package replacement valve seat and valve cover, gaskets and other seals.Assemble in reverse order of disassembly.Cross the locking flange bolts with the specified torque.Lock the stem nut with the specified torque.
Q:What are the advantages and disadvantages of the two functions of the pneumatic ball valve actuator?
From the above work principle can be seen: double acting pneumatic actuator, valve opening and valve closing all need compressed air thrust to perform. That is to say, the pneumatic actuator will remain in a position in case of loss of air.The single acting actuator belongs to the automatic reset type. After losing the continuous air pressure, the actuator will drive the valve back to the initial setting position under the tension of the spring.This answer is recommended by users
Q:Can the ball valves be used in heating?
Switch and multi way valve in the pipeline not only can flow, and flow diversion, flexible control of the medium, but also to turn off any channel to the other two channels. This kind of valve should be installed horizontally in the pipeline. In accordance with the way to drive the ball valve is divided into: pneumatic ball valve, electric ball valve, manual ball valve.
Q:Which is more cost-effective electric ball valve?
All kinds of Lady valve manufacturers.The company has strong technical force, with adequate and sophisticated machining equipment as the premise, to provide a strong guarantee for the production of high-quality products,
Q:Valve and ball valve is the same thing? Don't know don't speak
Ball valves belong to a large class of valves, valves include gate valve, butterfly valve, check valve, globe valve, ball valve, trap valve, safety valve, etc. all valves
Q:Home PPR pipe ball valve, which is good?
See what you use as a route. The main valve, then use the cut-off valve, because the cut-off valve is high, low, out of the valve. If the toilet or kitchen, often use the valve with the ball valve, because it is not bad, more suitable for regular switching use
Q:What does "41H" mean in the ball valve Q41H-16?
Q41H-16 in ball valve 41H stands forQ stands for ball valvesThe drive mode is manual (omitted)The 4 connection type is flange connectionThe 1 representative structure is the floating ball direct flow channelH: alloy steel sealing surfaceThank you, that's over.
Q:1 and 1/2 ball valve is how much?
1 and 1/2 ball valves, DN40mm.The ball (ball valve as the cut-off valve in the marine and marine field), standard GB/T21465-2008 "valve terminology" is defined as: opening and closing parts (ball) driven by the stem, and around the valve axis for rotation of the valve. Can also be used to regulate and control fluid, strong shear force between the metal seat seal V type ball valve V type ball core and welding hard alloy, especially suitable for containing fibers, small solid particles and other media. Switch and multi way valve in the pipeline not only can flow, and flow diversion, flexible control of the medium, but also to turn off any channel to the other two channels. This kind of valve should be installed horizontally in the pipeline. In accordance with the way to drive the ball valve is divided into: pneumatic ball valve, electric ball valve, manual ball valve.
Q:Principle of forced sealing ball valve
With spring to achieve forced sealing, not applicable to high pressure
Q:How to distinguish three points copper ball valve, two points copper ball valve
An inch is equal to eight British points, so two points is 1/4 inches, and two points on the ball are printed with "1/4", "three marks" and "3/8""

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