คำอธิบาย : TAKADAFLEX Series TFT and PTFT are ideal in heating and air conditioning system. Series TFT and PTFT are Twin-Sphere joint with EPDM cover and EPDM tube. It provides excellent resistance to ozone and sun light aging and oxidation. The unit has an EPDM tube , which is good for hot and cold water service and chemicals. The Twin-Spherical design not only provides a high pressure rating , also provide greater flexibility , thus protecting mating flanges , especially PVC and fiberglass types. The steel flanges easily rotate on the bellows which makes it easier to line up the bolt holes during installation when mating flanges are out of line. Flanges are of galvanized steel with a steel bead (flanges retainer). Standard size range from 1.1/2” to 12” I.D. , with operating pressure at 300 psi and size 14” to 24” with operating pressure at 150 psi at -20 C to 100 C