Shinmaywa Industries has taken the design and construction of submersible pond pumps to an art form. The Norus series line of professional grade Shinmaywa Pumps are available from 3300 GPH to 7000 GPH and come with a 2 year warranty. Used for installation in larger backyard ponds, waterfalls, and water gardens, these powerful and durable pumps are quickly becoming the best selling heavy duty pond pump in the industry. With over 50 years of pump building experience, Shinmaywa Industries of Japan has implemented exciting new pump designs that surpass existing similar style pumps on the market and provide years of trouble free use.