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:Is the water inlet valve good or the ball valve well?
Good with the gate valve, the ball valve requires more space than the gate valve.
Q:Is the ball valve installed in a direction?
Valve installation generally no direction required, any end of the valve can be mounted on the upper end. If the valve marked the direction, then it should be installed in the direction of tagging installed.
Q:Ball valve 11F, 41F, 11H, 41H
41F flanged ball valve type sealed through using tetrafluoroethylene; 11H is threaded through valve type the alloy steel seal;
Q:Under what circumstances with the butterfly valve, under what circumstances with the ball valve?
Selection principle of ball valve:1, oil, natural gas transmission mains, need to clean the pipeline, and be buried in the ground, all pass by, the ball valve full welded structure; buried in the ground, select all pass through ball valve welded connection or flange connection; pipe flange connection, welding, selection of connection, all pass through or shrink the diameter of the ball valve.2, product oil pipeline and storage equipment, choose flange connected ball valve.3, the city gas and natural gas pipeline, choose flange connection and internal thread of the floating ball valve.1 、 in the oxygen piping system of the metallurgical system, the fixed ball ball valve should be selected after the strict degreasing treatment and the flange connection.2, low temperature medium piping system and device, should choose to use the valve cover of low temperature ball valve.3 、 the lifting rod type ball valve can be used on the pipeline system of the catalytic cracking unit of the oil refining unit.4, chemical systems such as acid and alkali corrosive media and piping systems, it is appropriate to choose austenitic stainless steel, PTFE seat sealing ring for all stainless steel ball valve.5 、 metal to metal sealing ball valve can be used in metallurgy system, power system, petrochemical equipment, piping system or device of high temperature medium in city heating system. 6, the need for flow regulation, you can choose the worm gear drive, pneumatic or electric with V shaped opening of the regulating valve.
Q:What is the service valve?
In front of the valve will need to be all pass, that is, the hole and the ball valve line diameter consistent, the ball will not be card.
Q:Why can't the ball valve be screwed?
I think it should be the water holding gas, connecting device principle, at the bottom of the hand, barometric pressure, and the best you can last map, I'll see
Q:3/43/8 above the ball valve is not usually said of the big ball valve?
That is the calculation of the imperial, generally divided into two types, 1 inch (in.) 2, metric (mm) swap inch metric 1/4 (2) =6 3/8 (3) =10 1/2 (4) =12 5/8 (5) =16 3/4 (6) =18 7/8 (7) =22 1 1/8 (1 inch 1) =28,
Q:What is an eccentric hemispherical valve? How do you understand?
The eccentric hemisphere valve and the flange gate valve belong to the same type of valve. The difference is that the closing piece is a sphere, and the ball rotates around the center of the valve body to open and close a valve.
Q:Check valve, ball valve, check valve are used in what place, ah?
The check valve is suitable for the water supply network of the high-rise building, and has a certain chemical corrosive medium pipe network and a limited installation space pipe network, and is also suitable for the sewage pipe network
Q:Ball valve, PTFE pad inappropriate choice, is not easy to bad ah?
Yes, but not in a high temperature for a long time, like more than 180 degrees centigrade. Because the gasket can not be used after deformation, it will cause valve leakage.
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

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Range  
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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