Home News

Differences between API609 Category A and Category B

China TEKO Industry Co., Limited certification
China TEKO Industry Co., Limited certification
Dear Peter, Highly appreciate your sound service. The valves have well arrived and looks every well. Regards, Andrea

—— Mr. Andrea Arredondo

Hi, my friend. Finally we got the bidder and nice to cooperate with you.You prefession and quick reaction was the firm support for the business.

—— Mr.Hiep Le Hao

GOOD DAY, MY FRIEND. WELL RECEIVED YOUR VLAVES, GOOD QUALITY AND NICE PAITING. THANK YOU!

—— Mr. MARCELO ZANON

Good da, we just got the appoval from our customer. Your experiences helped a lot in the project. The final drawing is also very professional. Cheers!

—— Mr. Scott Hornick

compramos de TEKO desde 2011, continuaremos la cooperación. La calidad es buena y el precio es bueno.

—— Ing. Hugo Diaz

I'm Online Chat Now
Company News
Differences between API609 Category A and Category B
Latest company news about Differences between API609 Category A and Category B

What is the different between API609 Category A and Category B?

 

API 609 is the American design standard forbutterfly valves, which is divided into Category A and B.

 

Category A valves are "concentric" type. Also known as rubber lined butterfly valves. These are popular in low pressure systems (Class 150 or less), relatively lower cycle life, rubber liners are also good for abrasive slurry services.

latest company news about Differences between API609 Category A and Category B  0

 

Category B valves are "offset" type, meaning the shaft is offset from the disc, so they can handle higher differential pressures. Most of the offset types cause the disc to rotate freely from the seat after a few degrees of rotation, which minimizes seat wear and increases valve cycle life. The offset type can have rubber, polymer (PTFE or other), metal &graphite, or even metal seats. Lots of variety which makes these suitable for a variety of temperatures and pressures.

 

latest company news about Differences between API609 Category A and Category B  1

 

 

The Category B of the API 609 standard specifies the face to face dimension of API butterfly valves, in Wafer end, flange end and lug end. When it comes to compare with the GB standard, FF dimensions of flange end butterfly valve can almost fit each other for both API 609 standard and GB standard.But the dimension is very much different for wafer end butterfly, especially size 6 inch & 8 inch.

 

The TEKO company has set up a mold designed and manufactured according to API 609. Therefore,all the dimensions includign wall thickness, flange drilling, and face to face can fit the API standards.

 

For more info, Contact us www.eccentric-butterflyvalve.com

Pub Time : 2019-03-09 11:11:36 >> News list
Contact Details
TEKO Industry Co., Limited

Contact Person: Mr. Qipeng Chen

Tel: 0086-13660157288

Fax: 86-20-34627699

Send your inquiry directly to us (0 / 3000)