Pneumatic film single-seat regulating valve scene shooting pictures

Pneumatic film single-seat regulating pneumatic valve is mainly composed of low flow resistance pneumatic valve with pneumatic diaphragm actuators and related accessories, such as: electric pneumatic valve positioner, converters, solenoid pneumatic valve, pneumatic valve, etc, by compressed air, with pneumatic valve positioner, convert current signal to the corresponding linear displacement, automatically adjust the opening of pneumatic valve, control of pressure and flow of the fluid in the pipeline, the temperature, liquid level and other process parameters of continuous adjustment.






pneumatic membrane single-seat regulating valve has good sealing performance, leakage of small advantages, and compact structure, light weight, large, pneumatic valve, flow characteristic accurately, but the balance is bigger, so the work pressure differential is unfavorable and exorbitant. Particularly applicable to allow the leak amount is small, small pressure difference before and after pneumatic valve of occasions. Pneumatic single-seat regulating pneumatic valve products are standard, cut type, bellows seal type, type jacket insulation, and other varieties, is widely used in liquid temperature in - 200 ℃ to + 560 ℃ within the scope of a variety of pipeline.

single-seat pneumatic film by adjusting the parameters of the pneumatic valve technology:



nominal pressure: 1. 6, 2. 5, 4. 0, 6. 4, 10. 0 ( MPa)

pneumatic valve cover forms: standard ( - 17～+250℃) Type, high temperature ( +250～+450℃) Type, low temperature, - 40 ~ - 196℃) And bellows seal type ( - 40～+350℃)

gland forms: bolt clamp type

packing: v-type ptfe packing, v-shaped flexible graphite packing

pneumatic valve core forms: single plunger type pneumatic valve core

flow feature: the linearity, such as percentage

diaphragm material: nitrile rubber nylon fabric, ethylene propylene rubber clip to nylon fabric

gas supply pressure: 140 ~ 400 kpa

the environment temperature: - 30 ~ + 70 ℃

accessories: positioner, air filtration pressure reducer, a pneumatic valve, the stroke switch, pneumatic valve position transmitter, the handwheel institutions such as

action forms: gas closed type ( B) — Loss of air pressure pneumatic valve open (the FO) ； Gas open ( K) — Loss of air pressure pneumatic valve closed (the FC)

related products: electric single-seat regulating pneumatic valve pneumatic pneumatic valve working principle diagram