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: Replacement method of PPR hot melt ball valve
- 1, need to replace the valve, if the valve is flange or wire connection type, directly open flange or loosen the screw, the ball valve can replace a broken;
- Q: What do you mean by ball valves dn20pn1.6rf?
- DN20 caliber is 20mmPN is the pressure grade, usually PN16, 1.6MPa classRF convex flange connectionYour side should be similar to the Q41F-16 model of this type of ball valve
- Q: Is the integral type split ball valve structurally identical?
- The utility model is characterized in that the desktop is connected between the valve body and the valve sleeve, the gasket can effectively prevent leakage of the valve, the flow direction of medium after transformation can be used in two-way, which greatly facilitate the industrial pipeline installation.
- Q: What's the difference between a ball valve and a butterfly valve? Which one has better sealing performance?
- Force code valve industry for you to resolve their differences:Ball valve in the pipeline is mainly used to do cutting, distribution and change the direction of media flow, it only need to rotate 90 degrees of operation and a small rotating torque can be closed tight.Butterfly plate driven by the stem, if you turn 90 degrees, you can complete a headstock. Change the deflection angle of the butterfly plate to control the flow of the medium.Sealing performance of the ball valve is better than butterfly valve.
- Q: Maintenance of PPR pipe ball valve is live or hot melt?
- The ball valve is defined with the ppR/PE hot melt plastic pipe connected with the ball valve hot melt connection, ordinary ball valves generally use the threaded connection or flange connection.Hot melt connection is widely used in PB pipe, PE-RT pipe and other new pipe connections.Hot melt connection has the advantages of simple connection, long service life and easy corrosion.PPR pipes can only be connected by hot melt. There is a dedicated connection PPR tube double union copper ball valve, ball valve is full of copper, on both sides with PPR live tab.Ball valve (in the field of marine engineering and ships should be cut-off valve), standard GB/T21465-2008 "valve terminology" is defined as: "open and close parts (spheres) driven by the stem, and around the axis of the ball valve to rotate the valve movement.". 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.Ball valve was introduced in 1950s, with the rapid development of science and technology, production process and product structure of continuous improvement, in a short span of 40 years, has rapidly developed into a major valve category. In western developed countries, the use of ball valves is increasing year by year.
- Q: How to distinguish three points copper ball valve, two points copper ball valve
- Three points, two points mean the specifications of the ball valve, three refers to the diameter of 32, two refers to the diameter of 25
- Q: Advantages of track ball valves
- 10, the valve refractory design, API, 6FA and API 607 standards. All valves are fire resistant and safe.The valve seat sealing surface., all metal seal structure, when the fire, still can guarantee the sealing medium leakage, stop.The flange. In stainless steel and graphite gasket, can meet the requirements of fire;The stuffing box is arranged. Flexible graphite packing, can lose the effect due to fire and other reasons in other packing flexible graphite packing to seal effect can meet the requirements of fire;11, the valve stem through the stem nut, valve cover, valve body, between the core of the ball formed a continuous circuit conduction, to achieve anti-static effect.12, in order to improve the reliability of the valve, safety and sealing capacity, to reduce the failure rate, the valve low-pressure air tightness does not depend on the seat spring to achieve.13, the stem and valve ball position by stem guide pin and stem to cut off the coordination to control, in order to ensure the stability of valve operation, stem guide pin for double guide pin, and stem guide pin can be removed and replaced from the outside.14, hand wheel or bearing fixed, use bolt or nut compression, do not use elastic clasp.15, the valve installation size and the existing valve consistent, with good interchangeability.
- Q: Is the water inlet valve good or the ball valve well?
- Water valve at home as far as possible not to use the form of valve, gate valve for water, slag better, shut down with the next valve and ball valve. Just don't buy cheap goods, cheap ball valves use a period of time, gland leakage, spool corrosion must be replaced.
- Q: The two valves are available for the flow of the electromagnetic valve switch, I contact more, found for water solenoid valve are caged water, to repair several times because of impurities or newly installed pipeline with raw materials flowing through the valve, close the valve body when not to rely on Yan, a seepage water tank to diffuse phenomenon!I am looking for a replacement, I think the electric valve should be a good choice, not used to a conclusion.Please use the electric ball valve to talk about friends, or for the two kinds of friends who have an understanding to talk aboutOr there is no better substituteThere seems to control the solenoid valve and electric valve is not the same, the solenoid valve is normally open and closed to control the electric valve is controlled by the trigger (like), if used to replace it, what is the controller?
- Solenoid valve on the medium cleanliness requirements are very high, when the water is not clean, easy to leak. You use the solenoid valve is leaking, that's the case.If you have an air source, use pneumatic angle seat valvesIf only the power supply, the electric ball valve.Electromagnetic valve is electromagnetic rail, electric suction from the electromagnetic core, so that the valve openThe electric ball valve is driven by the motor to drive the valve open. If only switch, then do not need to install any controller, when buying, must explain is the switch ball valve.This answer was net friend adoption
- Q: Where can I buy this Y filter with a ball valve?
- This valve is added after the filter, directly on the flange welding joints or holes in the flange is connected with a ball valve tapping, can double wire, because the Y type filter is standard, relatively good buy, relatively less modification
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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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