[Risky]

Originally Posted by pauldenton

no, they are barb sizes on the 60hz eheims sold in the US (where the OP is situated) -
http://www.marinedepot.com/md_viewIt...1250&ast=&key=
http://www.marinedepot.com/md_viewIt...product=EH1048

a) the thread sizes in an eheim (in the UK/EU) are 3/8" BSPT (1048 in/ou, 1250 out) and 1/2" BSPT (1250 in)
http://www.coolercases.co.uk/wc_fittings.htm
b) US eheims use NPT fittings i believe (same nominal sizes..)
http://www.criticool.com/7fittings.html

It could varym, but afaik, the euro ones are BSPP:http://www.reptilica.de/shop/product...0/lang/german/

Full parts spec is found under the spar parts bit of their site http://www.eheim.de/eheim/inhalte/en/index.jsp?id=20601

For example the 1250: http://www.eheim.de/eheim/pdf/englis...250%20(GB).pdf