黄色在线观看污_成人啊好痛轻一点a级_午夜視頻在線觀看國產www_亚洲aⅴ无码牛牛影视_亚洲国产精品一区二区久久评价_激情五月综合人妻婷婷_av无码最新在线播放网址_护士爽到疯狂潮喷好爽_日韩精品综合日本欧美色_91成人午夜性A一级毛片蜜臀

中文  |  English
TOP
+86-021-59755666
Current position:Home >> Products >> Ball valve >> National standard floating ball valve

National standard floating ball valve

Model: Q3 / 6 / 941F / H / Y
Main material: carbon steel, stainless steel
Nominal diameter: DN15 ~ 200mm
Pressure range: PN1.0 ~ 10.0MPa
Working temperature: -29 ℃ ~ + 200 ℃
Application : Applicable to the switching of medium flow and the diversion or mixing of fluids to mediums in pipeline systems such as water supply, petrochemical, metallurgy, mining, textile, energy, papermaking, food, and steel.


       The working principle is to make the valve open or blocked by rotating the valve stem. Ball valve switch is light, small size, can be made of a large diameter, reliable sealing, simple structure, easy maintenance, sealing surface and spherical surface often in the closed state, not easily eroded by the media, widely used in various industries.

       The national standard floating ball valve only needs to be closed tightly with a 90-degree rotation operation and a small rotational torque. The completely equal valve body cavity provides a small, straight flow path for the medium. It is generally considered that ball valves are most suitable for opening and closing directly, but recent developments have designed the ball valve to be used for throttling and controlling flow. The main characteristics of the ball valve are its compact structure, easy operation and maintenance, suitable for general working media such as water, solvent, acid and natural gas, and also suitable for working medium with poor working conditions such as oxygen peroxide, methane and ethylene. The ball valve body can be integral or modular. This type of valve should be installed in the horizontal direction of the pipeline.
 
National standard floating ball test pressure
  

Pressure Level
Test pressure (Mpa)
Nominal pressure (PN)
Shell test
Seal test
1.0 1.5 1.1
1.6 2.5 1.76
2.5 3.8 2.75
4.0 6.0 4.4
6.4 9.6 7.04
16.0
3.0 2.2
- 7.6 5.6
- 15.0 11.0
- 2.4 1.5
- 5.8 4.0


National standard floating ball valve specification

Design Basis
GB series
design standards
GB/T12237
Flange connection structure length
GB/T12221
Structure length (welding)
GB/T15188.1
Connection flange
GB/T9113, JB/T79, Hg20592
Butt welding end
GB/T12224
Test and inspection
GB/T9092


 Picture.png
National standard floating ball valve main parts and materials

No. Part Name
Materials
GB ASTM
1 Body WCB A216-WCB
2 Sealing ring PTFE PTFE
3 Sphere 1Cr18Ni9Ti SS304
4 Nuts 35 A194-2H
5 Stud 35CrMoA A193-B7
6 Right body WCB A216-WCB
7 Gasket Flexible graphite + stainless steel
B12.10-304/FG
8 filler PTFE PTFE
9 Packing gland WCB A216-WCB
10 Positioning pieces 25 A105
11 Retaining ring 65Mn AISI 1066
12 handle Kt33 A47-667 Gr.32510
13 Stem 1Cr33 A276-410
14 Screws 35 A193-B7
15 Thrust washer PTFE PTFE


National standard floating ball valve features

1, floating ball valve lip seal valve seat, to ensure that the valve sealing performance is good, the friction coefficient is small, the operating torque is small.

2. Stem anti-flying structure: The stem is a bottom-mounted type to prevent pressure from flying out. At the same time, it can form metal contact with the valve body after the fire to ensure the stem seal.

3, fire anti-static device (soft seal floating ball valve).

4, with lock device. To prevent misoperation of the valve switch, there is a locking hole in the fully open and fully closed position of the valve to ensure that the valve is in the correct position.

5, floating ball valve is suitable for frequent operation, rapid opening and closing; relative small size, light weight, easy maintenance; not limited by the installation direction; fluid resistance, no vibration, low noise.

Group address:No.342, Hesheng Yutingyuan, Xiangju Road, Qingpu District, Shanghai

Hotline:+86-21-69755076   59755666   69755027   69755026   57339828
Investment call: +86-15021631111
Fax:+86-21-69755075     E-mail:sales@sgfm.cn
Factory address:No. 1798, Wang Wei East Road Fengjing Development Zone Jinshan District Shanghai City
Copyright © Shen Gao Valve Group Co., Ltd.        cpw887.cn
HuICP No. 11031085-3    No.31011802002466    Technical support:Fengsheng technology
Group address:No.342, Hesheng Yutingyuan, Xiangju Road, Qingpu District, Shanghai
Hotline:+86-21-69755076   59755666
     +86-21-69755027   69755026   57339828
Investment call: +86-15021631111
Fax:+86-21-69755075   E-mail:sales@sgfm.cn
Factory address:No. 1798, Wang Wei East Road Fengjing Development Zone Jinshan District Shanghai City
Copyright © Shen Gao Valve Group Co., Ltd.
cpw887.cn
HuICP No. 11031085-3
No.31011802002466
Technical support:Fengsheng technology