Hiblow HP Series Linear Diaphragm Air Pumps

Hiblow HP Series linear air pumps boast effective aeration and efficient operation. For over 30 years, these reliable, energy-efficient, low-noise pumps have been used in backyard ponds, aquaculture, and wastewater treatment applications. Every HP Series air pump features thermal overload protection to guard against overheating and pump damage. Oil-free operation eliminates danger of contamination in your pond! Linear diaphragm design for quick, inexpensive repair of worn pumps Includes pressure tap location for external alarm sensor (Excludes HP-20) 120V / 60Hz pumps are UL Listed (Excludes HP-20) Outside diameter of outlet is 18mm (0.71") Models HP-20 to HP-120LL come with a rubber elbow adapter that fits 1/2" or 5/8" barb or slide over weighted 3/8" ID tubing. Models HP-150 to HP-200 come with a straight rubber adapter that fits 3/4" barb (or can be cut to fit 1/2" or 5/8" barb) or slide over weighted 3/8" ID tubing. 3/4" direct burial will connect to the provided rubber elbow with