Water flow is extremely important when building a koi pond or water garden.  A check valve prevents water from back-flowing and draining your pump or filter, a gate valve slows the flow of water through the plumbing, a 3-way valve allows a portion of the water to flow through a different piece of equipment.  There are many types of valves, each with a purpose.  Pond Doc's Home & Garden not only sells these valves, we also give you the instruction on using them!


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