Steel tanks suitable for pressures up to 150 psi and temperatures up to 212°F. Uses 3/4" FNPT connections for installing on bypass to any size line. Use No. 20L Feeder for initial charge up to 20 pounds. No. 100L Feeder for initial charges up to 100 pounds. Designed for by-pass feeding of chemicals into closed systems and boilers. Can also be used to feed Micromet built strainers (2) and flow indicator should be ordered separately.