Hiblow® HP Series Linear Diaphragm Air Pumps Model:HP-20 Outlet assembly with pressure relief

Outlet assembly with pressure relief and pressure gauge

Thread the nylon string through the holes and fasten the bells to the upper string between the stakes

Provides approximately 70 beneficial trace minerals

oil-free submersible motor is low-maintenance and environmentally friendly

Hiblow® HP Series Linear Diaphragm Air Pumps Model:HP-20 Outlet assembly with pressure reliefHiblow 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 and aquaculture 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