Dobbie Underground (Screwdown) hydrants are manufactured in accordance Western Australian Water Corporation Strategic Product Specification SPS292.
The design accommodates replacement of spindle seal o-rings with the hydrant closed and the watermain under operating pressure.
The hydrant clutch is integral with the cover and can be replaced with the hydrant closed and the watermain under operating pressure.
Ductile iron body & cover to AS1831 Grade 400-15
Ductile iron jumper seal fully encapsulated with EPDM to AS1646
Stainless steel spindle to ASTM A276 Grade 316
EPDM Gasket Seals to AS1646
Spindle seal O-Rings and wiper seal to AS1646
Forged copper alloy spindle nut and gland to AS1568 Grade C48600
Socket Head Cap Screws to AS1420 Grade 10.9
Fusion bonded polymeric coating to provide excellent protection from corrosion and abrasion.