No.

Name of  Product

JINERJIAN butterfly valve(DN100)

Market butterfly valve(DN100)

1.

Body: made of rough,by processing,to be visible rough,then by spraying,to be body.

Cast iron:body weight 2.8Kilos

  Body weight 1.64 Kilos

2.

gluesheath

EPDM & Buna-N rubber, Natural rubber 50%,weight 0.42Kilos,cost 1.3USD per one.

reclaimed rubber,not Natural rubber.bad quality.weight 0.42Kilos,cost 0.6USD per one.

3.

Board

Black ball&

 solid core

   pig iron& hollow 0.46Kilos.

4.

Hand shank

length 280mm,easy to handle ,and rammed, dug iron

Length 230mm,pig iron,frozen in low temperature.

5.

disk

Armor plate &

Chrome Plated

Cost 0.3USD per one

        Galvanizing

Coat 0.18USD per one .

6.

Axis

Weight 0.52Kilos,galvanizing,

Long flat axis,not easy thread.

     Weight 0.26Kilos,not galvanizing,half round type,easy thread.

7.

High-molecular materials cover

Add 4 high-molecular covers and 1 O type ring to protect leakage,high-molecular cover cost is 0.03USD per one.

Add 1 high-molecular cover,the cost is 0.003USD per one.

8.

pin

Tapering pin,steel pin , fasten

        Steel pin

9.

Bolt

    10×30 plate color bolt

     6×20 bolt

10.

Paint

1 inch=0.07USDper one

Cost 0.07USDper one×4 inches=0.03USD per one

Can be used both inside and outdoor,never fade

1 inch =0.04USD per one,

Cost 0.04USD per one×4inches=0.16USD per one

Only can be used indoor

11.

Test pressure

Test on both sides,test pressure is 20 bar,national standard only require 1.76 bar tast pressure.

   Never testing

12.

Total weight

       5.14 kilos

       3.3 kilos