Questions about solenoid valves
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Domestic chemical plants (pharmaceutical factories) generally use ASCO (551) solenoid valves, right? Why are solenoid valves from SMC rarely used? Is there some defect with SMC?
SMC solenoid valves have a relatively simple design structure, but they have higher requirements regarding the type of medium used. They are typically employed in transmission equipment, packaging lines, filling stations, and similar applications. Many ASCO solenoid valves feature a high protection rating, making them suitable for use in outdoor chemical processing facilities and offering a long service life.
Aren’t they all using clean compressed air with a filtering and pressure-boosting valve these days? Logically, the medium should have little impact.
What he meant was probably the external environment
The selection must be based on the actual conditions on site, including the explosion protection rating, etc
As far as I know, SMC does not have solenoid valves with metal housings. Nowadays, metals are required for outdoor use. On the one hand, it might also be Japanese-made. Hehehe
This post was last edited by HEJIYUER on 2020-6-14 at 21:26. SMC’s solenoid valve products are primarily used in automated production lines, and they are often installed in valve islands in a centralized manner. Additionally, explosion-proof products are required in chemical industries; SMCs are mostly in intrinsically safe and spark-free versions, with polyester casings, and it seems there are no Exd versions. The casing of the Exd is made of metal, making it durable and resistant to drops.
:For handshakes, SMC also offers explosion-proof models, but they perform poorly when used outdoors and have a high failure rate; the external environment has a significant impact on these solenoid valves
SMC solenoid valves are more commonly used in the electronics industry; they are mainly non-explosion-proof, with few models that are explosion-proof. ASCO is available in various industries and under different operating conditions; it has the highest market share, but its price is the highest. Nuoguan/Hailong solenoid valves hold the second largest market share; in the chemical industry their market share is slightly lower than that of ASCO. They perform well in applications that require high standards such as explosion protection, low temperatures, stainless steel construction, and high flow rates. Moreover, they offer a more competitive price for similar specifications.
SMC is also promoting their surface-mounted explosion-proof solenoid valves this time. From what I’ve seen, the explosion-proof rating is IIB for SMC and IIC for ASCO; additionally, the power consumption is 3.6W for SMC and 1.8W for ASCO. For the rest, I don’t see much difference