Ito Link Hindi umiiral sa iyong wika, Tingnan sa: English (en),
O gamitin ang Google Translate:  

http://www.meribah-ram-pump.com/

Meribah Ram Pump, based in Thailand, offers appropriate technology products (ram pumps and bio sand water filters) and related expertise. A downloads page,  on Meribah’s website offers plans and other information related to building and installing ram pumps and bio sand water filters.