Quote Originally Posted by Bigglezworth View Post
The 'knock offs' say "Made in Germany". The authentic are stamped "Czech Republic".
Pretty sure you've got a knock off there. They say the new China ones also say Czech. Look at the etching/printing on your pump, notice the quality being poor compared to this one below. You should also be missing the blue pen dot, and worse case non-helicoil threading on the insert side. Who knows really, lots of forum articles on these things.

http://www.ebay.com/itm/111920992046