Full Welded Underground Extension Stem Ball Valve

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China Main Port
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TT or LC
Min Order Qty:
1 pc
Supply Capability:
1200 pc/month

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Product Description:

Quick Details of Full Welded Underground Extension Stem Ball Valve

Standard or Nonstandard:

Standard

Structure:

Ball

Pressure:

Medium Pressure

Power:

Manual

Material:

Forged

Temperature of Media:

-29℃-- 121℃

Media:

Oil

Port Size:

1"-48"

Place of Origin:

China

 

Packaging & Delivery of Full Welded Underground Extension Stem Ball Valve

Packaging Detail:

Plywood cases

Delivery Detail:

15 Days

 

Specifications of Full Welded Underground Extension Stem Ball Valve

1.Size:1"-48"

2.Connection: Flange RF/RTJ, BW, SW

3. Design: API 598/6D

 

Usage of Full Welded Underground Extension Stem Ball Valve

1.Bow-out proof stem
 
For the purpose of preventing the stem from flying off  resulting in abnormal rising of the inner pressure of valve,shoulder is fixed at the lower part of the stem.In addition,in order to prevent leakage resulting from burnout of packing set of the stem in a fire,thrust bearing is set at the contact position of the shoulder at lower part of the stem and valve body.Thus an inverse seal seat is formed which will prevent leakage and avoid accident.
 
2.Anti-fire safe design
 
When the trunnion ball valve be used normally,its sealed by seat and ball surface,seat retainer sealed by O-ring and body,this is soft sealed and reliable sealing.When the seat and O-ring are burnt,the seat retainer and body will be sealed by expanded graphite.Thus act anti-fire safe purpose.
 
3.Anti-static device
 
In order to prevent friction among ball,stem and PTFE that generates static electricity which may light the combustibles and explosives that cause an accident,in this ball valve,static-conduction spring is set between the stem and the ball,the stem and the body.Thus static electricity is conducted to ground and system safety is secured.
 
4.Free leakage of body Sealed construction
 
The connective position of valve body and bonnet is double sealed by gasket and O-ring,on this base,such factors as fire,high temperature,shock and uneven opening or closing of the torque all can't induce external leakage.
 
5.Low torque in operation
 
The self-lubricated bearings are installed at the friction of stem,resulting in wear resistance,fiexibility of operation and low torque.
 
6. Double block&bleed(DBB)
 
When ball is full open or close position,the transmitter substance in center cavity of body can be released by drainage and emptying devices.In addition,the over loaded pressure in the center cavity of valve can be  released to low pressure end by self relief seat.
 
7.Emergency sealing
 
Compound injection holes are designed and compound injection valves are installed at locations of stem/cap and body support of side valve.When sealing of stem or seat is damaged to induce leakage,the compound can be used to do the second time sealing.A concealed check valve is installed in side of each compound injection valve to prevent compound from out flowing due to the action of transmitter substance.The top of the compound injection valve is the connector for fast connection with compound injection gun.
 
8.Extension stem
 
For the underground installed valve,the stem can be lengthened and for the convenience of operation the corresponding compound injection nozzle and drainage valve can be extended to the top of valve.
 
9.Automatic body cavity relief
 
When the body pressure going up un-normally as the unstable factor,the trunnion ball valve downstream seat will be pushed by un-normally pressure,and the release theunnormal pressure automatically,it doesn't damage to the sealing of upstream seat.

 

 

 

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Q:Family aluminum tube ball valve, with a long handle so that, or butterfly shaped handle so that?
Butterfly type unused, a long handle used, the quality is very good.
Q:Ball valve leakage of this place, how do?
The seal on the valve body is broken. Screw it down and change the gasket
Q:How can the eccentric hemisphere valve be repaired? What are the things you should pay attention to when installing?
4 ball valve, if temporarily not installed, should be stored in dry and ventilated room, no bump or force. Need to open the valve 5 degrees, avoid sealing ring long-term pressure, reduce flexibility and affect the service life.5, the new installation of the valve, the first test water may be due to transport or other causes of minor leakage, can switch the valve 5 degrees to 10 degrees, two or three times, the valve will automatically adjust to the correct position.
Q:What is the ball valve Q11F -16 material?
If sealed, F stands for fluoroplastic. Valve material is not marked in the model!Q stands for ball valvesThe first 1: threaded connection,Second 1: is the ball valve is floating through the ball,F stands for PTFE- PTFE seals16 represents the nominal pressure of the ball valve is 1.6MPa=16 kg
Q:Water purifier water PE pipe and copper ball valve with lock nut connection reliability, and interface size requirements.
After the impact, for a period of time, PE pipe cracking phenomenon, this is what causes? This is connected to the tap water.Chasing the answerWhere is it cracked?!
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 is the ball valve core?
Ball valve spool is the ball, valve opening and closing parts (sphere) driven by the stem, and around the stem axis rotation. More ball material, carbon steel, forged steel, ceramics and so on.
Q:Ball valve faucet handle rotation, the ball does not move, how to repair?
That's the valve stem. It didn't eat in the slot. The product was useless. Buy a new one
Q:Ball valve use?
Ball valves are widely used in petroleum refining, long-distance pipeline, chemical, paper making, pharmaceutical, water conservancy, electric power, municipal, steel and other industries, and play a decisive role in the national economy.
Q:For the master enlighten Q47 ball seat spring hole number is determined by how
Calculate each spring force, multiplied by the number. According to the manual valve design must be greater than the pressure, pressure ratio must be large than the material allowable pressure on the line. (emphasize that here because the production process of the spring, has value of many uncertain factors, so the actual production of the spring and you cannot calculate out the same, so please choose when to consider).
YJ,is a leading largest and professional manufacturer of valves in China, Products for overseas markets covered all over the world.

1. Manufacturer Overview

Location Liaoning, China
Year Established 2007
Annual Output Value Above US$ 0.8 Million
Main Markets Mid East, Africa, Europe
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Tianjin; Qingdao
Export Percentage 20%
No.of Employees in Trade Department 128 People
Language Spoken: English; Chinese; Spain; Alabic
b)Factory Information  
Factory Size: Above 4,000 square meters
No. of Production Lines 2
Contract Manufacturing OEM Service Offered; Design Service Offered
Product Price Range Average