705 DUCTILE IRON COUPLING

The Model 705 is specially designed for grooved low pressure piping systems, mainly used in fire fighting piping systems, marine piping systems, low pressure microfiltration, ultrafiltration and reverse osmosis systems, etc.

Sizes-Inches/DN & Rated working pressure:
3/4″to 4″(DN20 to DN100), 600psi (42bar)
5”to 12″(DN125 to DN300), 300psi (21bar)
For cut groove only

MODEL 705 MATERIAL SPECIFICATIONS
Housings:
Ductile Iron to ASTM A536

Surface Finish:
Optional, can also be customized according to customers’ requirements.

□ Hot dip zinc galvanized
□ Epoxy power      
□ Dacromet
□ TRFLOW（PTFE）       
□ RilsanPA11

Rubber Gaskets:
The gasket seals is C-shaped, made of standard gasket EPDM(ethylene propylene diene monomer) for cold water, hot water, dilute acid, oil-free air and multiple chemical product (-30~110℃). It is not suitable for medium like petroleum.

Bolts & Nuts:
Round-head, elliptoid -neck, carriage bolts, type carbon iron covered with zinc or dacromet.