705 DUCTILE IRON
LOW PRESSURE FLEXIBLE
COUPLING
The Model 705 is designed for connection of grooved low pressure pipe systems.
Sizes-Inches/DN & Rated working pressure:
3/4″to 4″(DN20 to DN100), 600psi (42bar)
5”to 12″(DN125 to DN300), 300psi (21bar)
For Sch40S cut groove only
MODEL 705 MATERIAL SPECIFICATIONS
Housings:
Ductile Iron to ASTM A536
Surface Finish:
Antirust paint red or blue
□Hot dip zinc galvanized
□Epoxy power
□Dacromet
□Teflon（PTFE）
□RilsanPA11
Rubber Gaskets:
The gasket seals is C-shaped, made of standard gasket EPDM(ethylene propylene diene monomer) 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.
Silicone bronze heavy duty nuts to ASTM B98 C65100 for option
