Help With Solenoid Valve ! Specifically Screws !

[kenneth_kpe]

Here are pics of the solenoid valve I purchased from a local industrial hydro pneumatic store.

here are pics of the solenoid valve....

Here is the problem you see in the first and second pic ? Those are the connectors for the DC adapter, the problem is I cant turn the screws !! Am I missing something here ? Im trying to turn the screws with all my strength but they just wont turn !

Also the solenoid valve is rated at 12 V and im gonna use a adapter thats rated at 12.5 volts, I asked the same question regarding CPU fans, but those cost a fraction of solenoid valves and if its not worth the risk im going to find a DC adapter with a 12 V rating.

 

[kenneth_kpe]

ok i managed to unscrew it now !! hehehe but the question is still on about the 12.5 v adapter with the 12 V solenoid

 

[sub.42]

It's 12VDC.

You want to 'overcook it' with 12.5 volts. Thats 4.2% more than its rated at. The only thing that it will do is generate a little more in the way of heat, and shorten the life expectancy of the coil by a percentile of the overdrive voltage. If you are really worried, just rig yourself an addtional wirewound resistor to soak up the addtional .5V. So it's twelve volts DC, and its 5w rated so thats about .42 of an amp current draw. The extra voltage will mean it will draw less current, around .4 of and amp, but may produce a little more heat.

Hey, my 24VDC power supplies at work can go as high as 27-28 volts before things go bang. I would say it's OK.

sub.

 

[kenneth_kpe]

cool i should watch out for the solenoids temerature, il rig it up for a text run tom and see how it goes

 

[kamel_007]

hi

is that solenoid for RO water systems??

 

[Rodders]

My solenoid is 240V and gets hot hot!!!!

 

[kenneth_kpe]

im not familiar with RO systems but the solenoid is designed for air flow only o think ? hehe

ohh it gets hot ? hmm up to now i have not rigged up my solenoid yet ! hehehe