Brass Ball Valve nickel, brass, Chrome, Stainless Steel

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Tianjin
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Min Order Qty:
1000 set
Supply Capability:
3000 set/month

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Brass Ball Valve nickel, brass, Chrome, Stainless Steel



Specifications

 

Ball valve
1, Size: inch 1/2 to 4
2, Surface: nickel, brass, Chrome, Stainless Steel
3, Handle: steel handle
4, Material: Stainless Steel, Brass,



Ball valve

 

1. Material:    

Valve body stem/ball: Stainless Steel brass according to EN12164 or EN12165,

Seal: PTFE

2,.Size

  1/2”, 3/4”, 1”, 1-1/4”, 1-1/2”, 2”, 2-1/2”, 3”, 4”

3,.Surface

 Stainless Steel Brass finish, nickel finish, chrome finish

4,.Working temperature:  -20oC to 110oC

5,.Working medium:  Water, gas, non-corrosive liquid

6. Handle:  Steel handle

7. Thread:  ISO228 (equivalent to DIN259 and BS2779) or NPT

8. Certificate:  CE, ISO9001:2000

9. Guaranty: 3 Years guaranty.

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Q:Under what circumstances with the butterfly valve, under what circumstances with the ball valve?
The flow control accuracy requirements are not high, the fluid pressure is small place with butterfly valve, butterfly valve is the simplest kind of valve, mainly used in regulating the air flow and powder flow!According to the pressure of the liquid and gas fluid control, flow effect, rapid opening and can completely cut off for flow with the ball!
Q:One stainless steel ball, two pieces, three pieces of difference, use
Three piece ball valve has the following advantages:1., the fluid resistance is small, and the coefficient of resistance is the same length as the pipe section.2., simple structure, small size, light weight.3., close and reliable, at present the ball valve sealing surface materials widely used plastic, good sealing, vacuum system has also been widely used.4 easy operation, open and close rapidly, from fully open to fully closed as long as 90 degree rotation, facilitate remote control.5., maintenance is convenient, ball valve structure is simple, the sealing ring is generally active, disassembly and replacement are more convenient.6. in full open or full closed, the ball and valve seat sealing surface and dielectric isolation, the media through, it will not cause erosion of the valve sealing surface.7., a wide range of applications, from small diameter to a few millimeters, large to several meters, from high vacuum, high pressure can be applied.
Q:Is the ball valve the same as the float valve?
Ball valve and float valve is a kind of valve, the ball valve is a valve inside the ball, it is called the ball valve
Q:Role of ball valve DN20-Q11F-16
Type Q - 1 - connection form: threaded connection1 - gate structure: single gateF: PTFE sealing materialsDN - nominal diameter mm 2016 pressure rating: 161.6MPaQ11F ball valve is to control the circulation and cut-off of the pipeline medium.
Q:How many points of the ball valve, corresponding to a bit valve?
No detailed conversion forms are required. How many inches is the representation of inches?.In English, 12 inches are 1 feet, 1 inches =8 cents.So: 1/2 "ball valve, =4 sub ball valve, 1/4" ball valve, =2 sub ball valve, 3/8 ball valve, =3 sub ball valve, and so on.Just a simple conversion relationship.
Q:Can the check valve replace the ball valve?
No, but the ball valve can not replace the check valve!Ball valve is artificially to switch, the need for external force, there will be the operation is not in time, the action is not rapid, and other ills.The check valve is automatically opened and closed by hydraulic differential pressure, and the action is accurate.
Q:Calculation formula of ball valve flow
The sectional area of diameter of DN15, DN25 and DN50 is respectively:DN15:15*3.14/4=176.625 mm, 0.0177 square decimeter.DN25:25*3.14/4=490.625 mm, 0.0491 square decimeter.DN50:50*3.14/4=1962.5 mm, 0.1963 square decimeter.A pipe flow rate of V=4 M / s V=40 decimeter / s, and the 1 liter =1 cubic meter, the pipe flow respectively (cross-sectional area multiplied by the velocity):DN15 pipe: flow Q=0.0177*40=0.708 L / sec,It's 2.55 cubic meters per hour.DN25 pipe: flow Q=0.0491*40=1.964 L / sec,It's 7.07 cubic meters per hour.DN50 pipe: flow Q=0.1963*40=7.852 L / sec,It's 28.27 cubic meters per hour.Note: a flow rate must be given to calculate the flow rate, which is calculated in accordance with 4 meters per second.
Q:How to distinguish between single and double ball valve?
Single ball valve, pneumatic ball valve is a single short; double valve, double acting pneumatic ball valve is referred to as.Single acting pneumatic ball valve is open air, spring off; and double acting pneumatic ball valve, gas gas is closed.Single / double ball valve, is divided according to the actuator, the actuator has a single pneumatic actuator and double acting pneumatic actuator.Single acting pneumatic actuator Pneumatic actuator to more than double spring, loss of gas supply, the spring to reset actuator.For hazardous media or conditions requiring a safe position when the gas source is lost, a single action is recommended.Selection must be based on the size of the field air pressure to select the spring force, otherwise it may cause air pressure is less than overcome the spring force and can not drive the actuator.When the actuator is selected, the minimum spring force should be allowed to drive the valve normally, taking into account the gradual reduction of the spring force.
Q:What does "all pass" ball valve mean?
The ball valve is divided into full bore ball valve, ball valve and three or four valve diameter contraction, full bore ball valve inside and outside of the size of the aperture is consistent, overall were flat, parallel and pipeline fluid, and necking is outside the hole is larger than the hole, the medium flow through the three or four inconsistent.
Q:What are the advantages of an air operated ball valve in comparison with other types of valves?
In full open or full closed, the ball and valve seat sealing surface and dielectric isolation, the media through, will not cause the valve sealing surface erosion.Wide range of applications: diameter from small to a few millimeters, large to several meters, from high vacuum, high pressure can be applied. As the ball valve has a wipe in the opening and closing process, it can be used in suspension with solid particles in the medium.High processing accuracy: expensive, high temperature should not be used, such as impurities in the pipeline, easy to be blocked by impurities, leading to the valve can not open.

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