Specifications

butterfly valve body
1. ISO:9001 KS CE0038
2. Factory Sale
3. 12 Months Quality Guarantee
4. Satisfied Service

Introduction of this Kind of butterfly valve body

 

 

butterfly valve body   

 

Brief Introduction

 

This butterfly valve body is suitable on system such as petroleum, chemical industry, foodstuff, medicine, papermaking, water and electricity, shipping, plumbing, the smelting and sources of energy etc., and can be used as adjusting and daming equipmrnt on gas, liquid, semifluid as well as solid powder pipes and power lines and the container of many kinds of corrosiveness and non-corrosiveness. Especially extensively being used in  the fire protection system of high building and other pipe system which needs to show the switch state.

 

Feartures

 

 

1. Diversity in  size and light in weight. Easy installation and mintenance.  This butterfly valve body can be

 

mounted wherever needed.

 

2. Simple and compact construction,quick 90 degrees on-off operation.

 

3. Miniminzed operating torque, energy saving.

 

4. Flow curve tending to straight line. Excellent regulation performance.

 

5. Long service life. Standing the test of tens of thousands opening/closing perations.

 

6. Bubbles-tight  sealing with no leakage under the pressure test.

 

7. Wide selection of materials, applicable for various medium.

 

8. Gate valve, butterfly valve, globle valve, cock, glue pipe valve and diaphragm valve altogether, especially reaching and need show in the pipes and power lines system of valve switch state  at high layer of valve switch state at high layer of building fire protection  system, this butterfly valve body is all available.

 

 

 

 

 

Overall & Connection Dimensions

 

 

 

 Guide to butterfly valve body Selection

 

butterfly valve body model prepared by seven unit, its meaning is as follows: nominal pressure code of valve with Arabic numerals, its value is 10MPa pressure value for the valve of the power plant industry, mediated quality high temperature exceeds 530 centigrade, its value is 10MPa pressure valve.

 

 

Material of Main Parts

 

 

 

 

 

Failures that Can Occur and Methods to Eliminate

 

Failure Phenomenon

 

Sealing Surface Leakage

  

Reason:       1. butterfly valve body 's ring folder with debris.

                           2. pneumatic steel butterfly valve 's sealed closed position consistent errors.

                           3. Export equipped with flange bolts are uneven force or compression.

                           4. The pressure test of the butterfly valve body is incorrect.

Elimination:  1. Elimination of impurities, cleaning the butterfly valve body cavity.

                           2. Adjust the worm gear or  electric actuator, such as implementing agencies limit screw is reached the pressure                                reduce valve closed position is correct.

                           3. Check mating flange plane and bolt champing force should be evenly pressed.

                           4. Put pressure on the direction of the arrow.

 

butterfly valve body at Both Ends of the Surface Leak

 

Reason:       1. On both sides of gasket failure.

                           2. Uneven cargo pipe flange clamping force is not pressed.

Elimination:   1. Replace the gasket.

                           2. The compression flange bolts (evenly).

 

 

Method of Operation

 

1. butterfly valve body : handle out of the pipe into a parallel position, the pressure reduce valve in the open position,     90 centigrade angle, the valve in the closed position. Clockwise rotation of the handle is off the pressure             reduce valves, and counterclockwise rotation of the handle to open the valve.                      

2. The butterfly valve body of the worm gear: accordign to the part of the valve is installed indicating device 

    identification, clockwise rotation of the handwheel off valve counterclockwise rotation of the handwheel to open the pressure

    reduce valve.

3. Pneumatic, electric, electro-hydraulic linkage operation, in accordance with the drive manual.

 

 

Installation & Maintenance

 

 

Installation Note of the butterfly valve body

 

1. Prior to installation should check the butterfly valve body specifications, pressure, temperature, corrosion resistance and meet the requirements. Should check the valve's part is damaged or loose.

2. This kind of