Forged steel pneumatic valve selection and procurement guidelines

forged steel pneumatic valve is mainly suitable for thermal power plant all kinds of the pipeline system, cut off or connect pipe medium. Applicable medium: water, steam and other corrosive medium. Pneumatic valve forged steel compared with other pneumatic valve product is resistant to high temperature and high pressure, the characteristics of unique since the seal design, the higher the pressure, the more reliable seal. Because of performance technology characteristics, operating mode of the special products have formed the characteristics do not replace the other products.
to buy forged steel pneumatic valve information:
, according to the use place, purpose, and understand the relevant laws and regulations, specifications, standards, guidelines and allowable approval can choose suitable for all kinds of requirements of pneumatic valves;
, identification of pneumatic valve working conditions, suitable medium, working pressure, medium temperature;
, identify and match the nominal pipe size: DN ( mm、NPS( ”;
and determine with pipeline connection mode: flange, ( External thread type, welding type, the wafer, the clamp, the card sets of type;
, determine the pneumatic valve operation drive mode: manual, worm gear and worm drive, pneumatic, electric, hydraulic, electromagnetic actuator, electric hydraulic, etc. ;
and confirm the type of pneumatic valve, pneumatic valve gate, globe pneumatic valve, throttle valve, plunger pneumatic valves, pneumatic ball valve, butterfly valve, pneumatic diaphragm valve, cock pneumatic pneumatic valve, safety valve, check valve, hydrophobic pneumatic valve, relief valve, and other special pneumatic valve;
and determine the use of pneumatic valve forms: switch model, external regulation, safe, etc. ;
and determine the pneumatic valve shell and internal parts material: carbon steel, alloy steel, stainless steel, ductile iron, grey cast iron, copper alloy, aluminum alloy, plastic, etc. ;
, determine the pneumatic valve sealing performance requirements, rank or seal leakage;
, determine the pneumatic valve protective coating requirements, packaging requirements, transportation requirements;
and special needs of pneumatic valves should also be sure: the length of the structure, pneumatic valve height, shape, size, flow resistance, discharge capacity, flow characteristic, protection grade, explosion-proof performance parameters such as;
and determine the installation position and posture of pneumatic valve.
forged steel concrete can be divided into pneumatic valves:
pneumatic forged steel gate valve, pneumatic butterfly valves, forged steel forging steel ball pneumatic valve, pneumatic valves, forged steel, forged steel globe check pneumatic valves, forged steel insulation pneumatic valves, forged steel corrugated pipe pneumatic valves, the pneumatic sealing gate valve, since the seal by the pneumatic valve, since the seal check of pneumatic valves, forged steel type pneumatic valve, etc.
forged steel connection forms and their respective advantages of pneumatic valve pneumatic
of forged steel valves according to the body of the cover design form can be divided into three kinds:
body cover pneumatic valves, forged steel bolt connection design of pneumatic valves in this connection, the pneumatic valve body and bonnet bolting, spiral wound gasket seal. Advantages: easy to maintenance.
body cover pneumatic valves, forged steel welding connection design of pneumatic valves in this connection, the pneumatic valve and pneumatic valve cover all welding seal. Advantages: no external leakage.
pressure self-tightening type pneumatic valve, pneumatic valve cover of forged steel in this connection design of pneumatic valves, the pneumatic valve body and valve cover with screw mosquito connections, internal pressure sealing ring seal. Advantages: the higher the internal pressure, the greater the sealing performance is better.