MAG-11 Zero air loss air tank drain. Magnetically operated with long life magnets. Maximum operating pressure 0-230 PSI. Minimum temperatre +35 degrees F, maximum medium temperature +120 degrees F. Draining capacity is 40 GPH. Direct acting valve with viton seals. 1/2" NPT inlet, 1/8" NPT outlet. This is an excellent solution to condensate draining where no electricity is available. The MAG-11 tank drain does not require electricity for operation. This is a true zero loss, zero energy consumption tank drain. The MAG-11 will pay for itself in less than one year in energy savings.