Pneumatic butterfly valve type

Pneumatic butterfly valve type
pneumatic butterfly valve models have a standard in the world, we D671X - below 16 p - 6 types of pneumatic butterfly valve to interpret its meaning.
the first type is called D671X: where D is the meaning of butterfly valve, pneumatic X mean
size: 6 on behalf of its diameter size, the diameter is 150 mm
pressure: 16 p is said its pressure is 1. 6 kpa
6: DN is an international standard, is on behalf of the nominal pipe diameter, 150 is said its inner diameter is 150 mm above the
this model is the international standard, some manufacturers model named can also be their, named after the specific models and specific conditions. Below is the summary of the pneumatic sanitary butterfly valves

models: ZTWD62 ( 6, 8, 7) 1 x
size: 3/4 '~ 150 mm
pressure: 0. 6 and 1. 0 and 1. 6MPa;
size standard: gb, ISO,
connection mode: welded, clamp, clamp, screw-type
the valve body material: stainless steel ( 304304 l、316316 l)
the seat material: rubber ( X) , fluorine rubber ( F)
action: double-acting and single acting ( Spring return)
control mode: switch type, external regulation
the attachment options: solenoid valve, locator, limit switch, source sanlian pieces of processing