trunnion ball valve ; ball valve ; CLASS150--2500 ball valve
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 1000 pc/month
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Specification
Normal pressure or rating | Class 150-Class 2500,JIS I0K - 20K,PN 10 - PN 420 | |||
Normal diameter or bore | NPS 1/2-40,DN6-1000 | |||
Applicable temperature | －196℃-540℃ | |||
Operation type | Manual,worm gear,pneumatic,electric | |||
Standards and specification
| Design&manufacture
| API6D.API608.ASMEBI6.34,ISO5211,ANSI/AWWAC507,BFCI70-2.MSSSP-72,BS5351,B56364,NACE MR0175
| Connection ends
| ASMEBI6.5,ASMEB16.47.API 605,MSS SP-44,ISO 7005-1,JISB2238,BS12627,ASMEBI6.25,ASMEB16.11,BS 12760 |
Face to face dimension | ASMEB16.10,ISO 5752,BS 558, BS12982
| Testing &inspection | API598,API6D,API607,API6FA,BS6755.BS12569,MSS SP-82,MSS SP-6I | |
Urgent grease injection device
According to customers requirement, the trunnion ball valves made by our company are provided with devices for urgent grease injection, which are on both the stem and seat for the trunnion ball valves of DN 150mm(NPS6), and in the body cavity for the valve of DN 125mm. When the O ring of stem or the body seat ring is damaged due to accident the medium leakage between body and stem can be prevented by injecting the sealing grease through the device
Double-block and bleed functions
In general, trunnion ball valve features the front ball sealing design structure. Each seat of the ball valve can separately cut off the medium at both inlet and outlet of the valve to realize double-block functions. When the ball valve is closed, body cavity and two of the body ends can be blocked with each other even if both the inlet and outlet are under pressure, when the medium left in the body cavity might be bled through the relief valve
Fire safe design
With the valve heated in a fire application, the non-metal material parts such as seat sealing ring of PTFE, O ring for the stem, and sealing gasket for body and bonnet, might be damaged due to high temperature. Special design of auxiliary metal to metal or the graphite seal is provited for the trunnion ball valve to effectively prevent both internal and external leakage of the valve. As required by customers fire safe design for the trunnion ball valve meets the requirement of API 607, API 6fa, BS 6755 and JB/T 6899
Self-relief in the body cavity
As the liquid medium left in the body cavity gasifies due to increased temperature, the pressure in the body cavity becomes abnormally higher, when the medium itself in the cavity would propel the seat and self-relieves the pressure to ensure the safety of valve
Trunnion ball valve with the Bi-sealing design structure, i.e. seat se aling in front of the ball and seat sealing behind the ball
According to some special working conditions and customers requirement, We has provided the trunnion ball valve with the Bi-sealing design structure, i.e. seat sealing in front of the ball and seat sealing behind the ball thus the reliable sealing of the valve is ensured because the valve can perform normally even if one of the effective sealing designs becomes lost due to the abnormal condition
Regarding the seat in front of the ball, the piston effect formed by the area difference between D1 and D2, plus the pre-tightened force of a spring would cause the seat in front of the ball by the pressure difference of the medium before and after the valve to touch the ball closely to form the tightness, of which the sealing force will become bigger as the pressure difference gets hig her
Regarding the seat after the ball, the piston effect formed by the area difference between D2 and D3, plus the pre-tightened force of a spring would cause the seat behind the ball to touch the ball closely to form the tightness, of which the sealing force will become bigger as the pressure difference gets higher
Blow-out proof stem
Blow-out proof structure is provited with for the stem which is positioned by the up-end cap and screw, being guaranteed not to be blown-out by the medium even if at abnormal rise n pressure in the cavity
Anti-static design
The ball of the trunnion ball valve gets close contact with each othe th rough the trunnion, adjusting cushion, and down-end cap, the passage of static electricity thus forms together with the valve, which may le ad the static electricity caused by sparks generated by friction between the ball and seat during on and off perform ance to the ground to prevent the possible risk of fire or explosion.
- Q: Who knows why the ball valve is divided into a piece of ball valve, two pieces of ball valve, three pieces of ball
- There is, of course, a difference,This is according to the structure of the valve body,The difference between them is whether they are easy to disassemble, for example, the three piece of ball valve is easiest to disassemble.
- Q: What's the meaning of the double ball valve in the double ball valve?
- By means of "union", the "live" means that the two ends of the valve are connected by a live joint
- Q: Butterfly valve, globe valve, ball valve used what is different
- Butterfly valve, globe valve, ball valve used in different occasions:1. valve (Butterfly Butterfly) refers to the closure of parts (valve or butterfly plate) for the disk, around the valve shaft to achieve rotation and closure of a valve, the main cut off on the pipe and throttling. Butterfly valve headstock is a disc shaped disc, in the valve body around its own axis of rotation, so as to achieve the purpose of opening or closing or regulation. Butterfly valve is fully open to fully closed is usually less than 90 degrees, butterfly and butterfly stroke itself has no self-locking capability, in order to position the disc to install the valve stem on the worm gear. Using worm gear reducer, not only can the butterfly plate have self-locking ability, so that the butterfly board stops at any position, but also can improve the operation performance of the valve.Industrial butterfly valve features, capable of high temperature, applicable pressure range is higher, the valve nominal diameter is large, the valve made of carbon steel, the valve plate sealing ring using metal rings instead of rubber rings. Large high temperature butterfly valve welded by steel plate, mainly used for high temperature smoke duct and gas pipe.
- Q: Home PPR pipe ball valve, which is good?
- Zhejiang harmonious tube industry, the quality is very good, the price is also affordable, I installed, I do not know how many. Ball valve broke, it must be cut, from the connection, the valve is broken, and another spool can be used
- Q: Please professional help guide: accidental discovery of connection pipe and valve (mark position diagram) can rotate, but there is no problem with the 10 Water Leakage.Please professional help guide: accidental discovery of connection pipe and valve (mark position diagram) can rotate, but there is no Water Leakage problem, while the valve under the same position is fixed and can not rotate, will this situation is normal? Is it possible to leak water in the future?
- This nut should be tight and can not move. There is a rubber pad in it, so it is not leaking at all. It will leak for a long time. It is suggested that the wrench should be tightened clockwise (from top to bottom)
- Q: 3/43/8 above the ball valve is not usually said of the big ball valve?
- That is the calculation of the imperial, generally divided into two types, 1 inch (in.) 2, metric (mm) swap inch metric 1/4 (2) =6 3/8 (3) =10 1/2 (4) =12 5/8 (5) =16 3/4 (6) =18 7/8 (7) =22 1 1/8 (1 inch 1) =28,
- Q: Ball valve? I require the valve to control both sides of the liquid, one side with liquid flow, and the other side closed!
- Three way reversing ball valve. Three way ball valves are T and L. The T type can cause three orthogonal pipes to connect with each other and cut off third channels, thus diverting and merging the channels. Two pipeline L three ball type valve can only be connected mutually orthogonal, communicating with each other while maintaining the third pipeline, only as a distribution function.
- Q: What's English for ball valves?
- Check valve/ball vavle/globe valve (ball valve), there are three kinds of translation, see which you preferFast stainless steel ball valve, ball valve is evolved from the plug valve. It has the same rotation, 90 degrees lifting action, and the difference is that the cock body is a sphere and has a circular through hole or passage through its axis. The ratio of the sphere to the channel opening should be this, i.e., when the ball rotates 90 degrees, the spherical surface should be fully presented at the inlet and outlet, thus truncating the flow. The ball valve only needs to rotate 90 degrees of operation and very small turning moment can close tight. Full equality of the valve cavity for the media to provide a small resistance, through the flow channel. It is generally believed that the ball valve is suitable for direct opening and closing, but the development of the ball valve has been designed to make it throttling and controlling the flow.
- Q: What's the difference between T ball valve and L ball valve?
- This is the code for the three way ball valve and the three way plug valve flow passage. The L shape can only connect the two channels perpendicular to each other, and the T shape allows the three channels to communicate with each other or to connect two of them.
- Q: Pneumatic two stage ball valve principle
- Two section type pneumatic ball valve, pneumatic piston two stage shut-off valve to achieve a two step or two step off the action of the cut-off valve is a special pneumatic valve, provides 0 degrees, 45 degrees, 90 degrees or 0 degrees, 90 degrees, three operating mode 180 degrees.
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trunnion ball valve ; ball valve ; CLASS150--2500 ball valve
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 1000 pc/month
OKorder Service Pledge
OKorder Financial Service
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