butterfly valve principle, design features, special options, the standard range

Butterfly Principle:  butterfly valve opening and closing parts with reciprocating rotary disc is about 90 ° to open, close and adjust the fluid channel of a valve. butterfly not only simple in structure, small size, light weight, material consumption province, installation size, small, and the driving torque is small, simple, rapid, and can also has a good flow regulation and seal off characteristics, in the last century, years one of the fastest-growing varieties of valves.

 

Design Characteristics: small, lightweight, easy installation and maintenance, and can be installed anywhere.

simple, compact, 90 ° rotary opening and closing rapidly.

operating torque is small, lightweight effort.

flow curve tending to straight line, regulated performance.

number of trials open and close as many as tens of thousands of times, long life.

be completely sealed, the gas leak test is zero.

select different parts materials, use a variety of media.

 

Special Options: can be extended according to customer demand valve stem.

surface coating according to customer demand.

can be used in harsh conditions such as low temperature situations.

 

Standard Range: design standards: GB/T12238-1998;ISO10631-1994 or BS EN593-1998 . flange size: GB/T17241.6-1998;ISO7005-2 or BS EN1092-2002 .

structure length: GB/T12221-1989;ISO5752-1988 or BS EN558-1.

pressure test: API598.