1、 Features of fixed pneumatic ball valve:
1. Double blocking and discharging function: the fixed pneumatic ball valve uses the spring to pre tighten the floating valve seat. No matter the valve is in the fully open or fully closed state, the valve seats at the upstream and downstream sides block the fluid, and the residues in the cavity of the valve body are discharged through the discharge valve.
2. Automatic pressure relief function: in case of abnormal pressure rise caused by the temperature rise of the medium staying in the valve body cavity, it is not necessary to pass through the safety valve, but only the valve seat function can automatically relieve pressure, which is very important to ensure the safety of the valve when delivering liquid medium.
3. Fire safety structure: all valves have fire safety functions, and their design and manufacture comply with API 607 and API 6FA specifications.

How are pneumatic butterfly valves classified?
The important connection components in engineering technology are separated from corrugated flexible pipes, mesh sleeves and joints. It is used in various gas transmission and infusion pipeline systems, as well as length, temperature, position and angle compensation systems. It is used as compensation elements, sealing elements, connecting elements and shock absorption elements, and is applied in aerospace, petrochemical, mining electronics, machinery and shipbuilding, medical and health, textile electronics, energy architecture, metallurgy and other fields.
The material is austenitic stainless steel, mainly 304L and 316L. It can also be manufactured according to the data requested by the user. There are pump connections, air conditioners and insulation bellows.
It uses two kinds of metal bellows, one is spiral corrugated, the other is annular corrugated. The specifications, sizes and models are classified as DN10, DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400. The hose pressure can be divided into 2.5KG pressure, 6KG pressure, 10KG pressure, 16KG pressure, 25KG pressure, etc.