H Series pumps have the same proven features as the S series circulating pumps. Specially designed, highly efficient motor is rubber-mounted in a pressed steel bracket, ensures quiet, vibrationless pump performance. A tried and proven method of preventing water leakage, the well known “ARMSEAL” construction is an often imitated feature of the Armstrong circulator. Made of long lasting hard wearing materials, it ensures many years of noise free, trouble free service. Dependable, quiet operating, oil-lubricated sleeve bearing, “module” cartridge design, insures service-free, longer lifetime operation.
