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Three-piece flanged ball valve

Three-piece flanged ball valve
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Product name : Three-piece flanged ball valve Product model : 1F Q4 1F
   Driving method : Manual, electric, pneumatic Connection form : Flange
   Structure form : Floating ball valve    Seal structure : Hard seal, etc.
   Pressure range : 1.6-6.4MPa    Nominal diameter : -DN10 0 DN15 -DN10 0
   Common materials : stainless steel    Technical consultation : 021-31007323

是国内著名〖 三片式法兰球阀 〗制造商,也是国内大型【 球阀 】生产商之一,公司自成立以来始终围绕客户的需求并持续创新,为广大的代理商和企业客户提供〖 三片式法兰球阀 〗解决方案,质量可靠,价格实惠,故畅销全国各地,欢迎新老客户来电,来函,我们将为您提供最优质的服务。 Hushan Valve Manufacturing (Shanghai) Co., Ltd. is a well-known domestic manufacturer of " three-piece flange ball valves" and one of the large domestic [ ball valve ] manufacturers. Since its establishment, the company has always focused on customer needs and continued innovation for the majority of Agents and corporate customers provide the " Three-piece Flange Ball Valve" solution, which is reliable in quality and affordable, so it sells all over the country. Welcome new and old customers to call us or write us, we will provide you with the best service.

Introduction of one or three-piece flange ball valve

(3PC) Q41F-16 / 40 (C, P, R)

和闸阀是同属一个类型的阀门,区别在它的关闭件是个球体,球体绕阀体中心线作旋转来达到开启、关闭的一种阀门。 The three-piece flange ball valve and the gate valve are the same type of valve. The difference is that the closing part is a sphere. The sphere rotates around the center line of the valve body to open and close the valve. Ball valve is mainly used in the pipeline to cut off, distribute and change the flow direction of the medium. 不锈钢手动阀门 Three-piece ball valve is a new type of stainless steel manual valve that has been widely used in recent years .

Advantages of two or three-piece flanged ball valves

1. The fluid resistance is small, and its resistance coefficient is equal to the pipe length of the same length.
2. Simple structure, small size and light weight.
按其通道位置可分为直通式,三通式和直角式。 Three-piece flange ball valve can be divided into straight type, three type and right-angle type according to its channel position. The latter two types of ball valves are used to distribute media and change the flow of media.

Three or three-piece flange ball valve

1. Keep the position where the valve handle rotates.
2. Cannot be used as throttling.
3 Ball valves with transmission mechanism should be installed upright.
The working principle of the three-piece flange ball valve is to make the valve unblocked or blocked by the rotary valve. The ball valve switch is lightweight, small in size, can be made into a large caliber, reliable sealing, simple structure, easy maintenance, the sealing surface and spherical surface are often closed, not easy to be eroded by the medium, and widely used in various industries.

Working principle of four or three-piece flanged ball valve

First, the opening process
1 In the closed position, the ball is pressed against the valve seat by [wiki] mechanism [/ wiki].
2 When the handwheel is turned counterclockwise, the valve stem moves in the opposite direction, and the angular plane at the bottom makes the ball release the valve seat.
3 The valve stem continues to lift, and interacts with the guide pin in the spiral groove of the valve stem, so that the ball starts to rotate without friction.
4 Until the fully open position, the valve stem is lifted to the extreme position, and the ball is rotated to the fully open position.
Second, the shutdown process
1 When closed, turn the handwheel clockwise, the valve stem starts to lower and the ball leaves the valve seat and starts to rotate.
2 Continue to rotate the handwheel, the valve stem is affected by the guide pin embedded in the spiral groove on it, so that the valve stem and the ball are rotated 90 at the same time.
3 Just before closing, the ball has rotated 90 without contacting the valve seat.
4 In the last few turns of the hand wheel, the angular plane at the bottom of the valve stem is mechanically wedged to press the ball tightly against the valve seat to achieve a complete seal.

Structural features of five or three-piece flanged ball valves

1. There is no friction between opening and closing. This function completely solves the problem that the traditional valve affects the seal due to the friction between the sealing surfaces.
2. Top-loading structure. The valve installed on the pipeline can be directly checked and repaired online, which can effectively reduce the equipment shutdown and reduce costs.
3. Single valve seat design. Eliminates the problem that the medium in the cavity of the valve affects the safety of use due to abnormal pressure rise.
4. Low torque design. The valve stem with special structure design can be easily opened and closed with a small handle.
5. Wedge-shaped seal structure. The valve is sealed by the mechanical force provided by the valve stem, which presses the ball wedge against the valve seat, so that the sealing of the valve is not affected by the change in the pressure difference of the pipeline, and the sealing performance is reliably guaranteed under various working conditions.
6. Self-cleaning structure of sealing surface. When the ball is tilted away from the valve seat, the fluid in the pipeline passes through the sealing surface of the ball uniformly at 360 . .

Six or three-piece flange ball valve application specifications

Nominal pressure: 1.6-6.4MPa
Applicable temperature range: -20 ~ 232 ℃ ~ 350 ℃
Applicable medium: water, oil, gas and some corrosive liquids (W, O, G)

Seven or three-piece flange ball valve

Part name Material
Stainless steel stee Carbon steel
1 Bolt Stainless steel SS304 Carbon steel
2 Spring washer Washer Stainless steel SS304 Stainless steel SS304
3 Nut Stainless steel SS304 Carbon steel
4 Valve Cap Stainless steel CF8 / CF8M Carbon steel WCB
5 Body Stainless steel CF8 / CF8M Carbon steel WCB
6 Ball Stainless steel CF8 Stainless steel CF8
7 Seal ring PTFE PTFE
8 Stem Stainless steel SS316 Stainless steel SS304
9 Stem packing PTFE PTFE
10 Gland nut Stainless steel SS304 Stainless steel SS304
11 Spring washer Washer Stainless steel SS304 Stainless steel SS304
12 Nut Stainless steel SS304 Stainless steel SS304
13 Handle Stainless steel SS304 Stainless steel SS304

Eight, three-piece flange ball valve main dimensions Unit: mm

SIZE 1/2 ″ 3/4 ″ 1" 1 1/4 ″ 1 1/2 ″ 2" 2 1/2 ″ 3 ″ 4 ″
d 15 20 25 32 38 50 65 76 100
L 130 150 160 180 200 230 290 310 350
D 95 105 115 135 145 160 180 195 230
D1 65 75 85 100 110 125 145 160 190
D2 45 55 65 78 85 100 120 135 160
b 14 16 16 18 18 20 twenty two twenty four twenty four
f 2 2 2 3 3 3 3 3 3
H 75 95 90 110 130 140 140 180 250
W 130 140 140 170 200 220 220 350 550
n-do 4-14 4-14 4-14 4-18 4-18 8-18 8-18 8-18 8-22

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