250PSI Ductile Iron Low Pressure Flexible Couplings

250psi carbon steel corrosion and low pressure coupling, especially designed for low pressure pipeline system.
Anti-corrosion coating material, resistan most level chemical substance
(for example: fungicides, oxidizing agents, flocculating agents and softener, membrane cleaning agent).
sizes-inchesdn & rated working pressure:
34 inch to 5 inch (dn20 to dn125), 250psi (18bar)
6 inch to 12 inch (dn150 to dn300),200psi (16bar)
material specification
housings:
� hot-dip galvanizing
� electrostatic spray
� plating dacromet
� teflon (ptfe)
� nylon
gaskets:
gaskets � epdm rubber, suitable for cold water, hot water, rare acid, oil-free air and multiple chemical product (-50~150�).it is not suitable for medium like petroleum.
bolts & nuts:
round-head, elliptoid-neck, carriage bolts, type carbon iron covered with zinc or dacromet.