[TheForge] help on hydraulics needed

[David E. Smucker]

As others have said you need high pressure rated fittings, pipe and hose. 
Use of cast iron fittings and schedule 40 pipe is a sure way to get hurt, 
and most likely burn your shop down or very badly burn you.  One of the 
great risks with mineral oil hydraulics is a leak that sprays oil on to hot 
metal resulting in a fire.  Make sure you understand what you are doing or 
get someone who knows to help you.  Hydraulic press are great, but you need 
to build them as safe as you can.  Blacksmith have the added hazard of hot 
metal which is very good a lighting off a spray or mist of hydraulic oil. 
The worst thing about cast iron fittings is that they can hold for a while 
and then let go.  Some cast iron fittings are rated at only 150 psi and 
others at only 600 psi but you will need forged fittings rated at 3000 psi.

Dave Smucker
----- Original Message ----- 
From: <smith at blacksmithing.org>
To: <theforge at mailman.qth.net>
Sent: Monday, April 02, 2007 1:04 PM
Subject: [TheForge] help on hydraulics needed


> Greetings all -- 
>
> Hopefully a quick question -- are standard steel plumbing fixtures 
> (nipples, 'T's, elbows) appropriate for us in a hydraulic press. Seems 
> like the equipment I have does have typical tapered threads but I just 
> wanted to confirm the useage. See "http://ironflower.com/plans/press.htm" 
> for what I'm actually trying to do.
> Steve Bloom
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