Valves

Metal Seat Gate Valves DN80-900

Features:

• Manufactured to AS/NZS 2638.1, Dobbie metal seated gate valves feature high quality 500/7 ductile iron body and cover castings, providing superior strength and substantial resistance to impact damage.
• Precision machined 431 grade stainless steel has been utilised for the manufacture of valve spindles, providing a significant level of corrosion resistance and high strength. 
• Valve gates DN80 – 300 are manufactured from dezincification resistant copper alloy. Larger sizes feature polymeric coated ductile iron gates with copper alloy sealing rings.
• High mechanical strength and wear resistant engineering plastic thrust washers ensure low torque requirement for both sealing and cracking operations.
• A robust 316 stainless steel gland incorporates two O-ring seals and a wiper ring, ensuring both reliability and longevity in service. O-rings may be serviced or replaced with the valve fully open under maximum operating pressure.
• Integral feet provide a stable platform and lifting points have been included in the design to aid safe installation. 
• Valves may be operated using a key, handwheel or via gearbox reduction (IP67 rating on supplied gearboxes is Standard)
• Fusion bonded polymeric coating to AS/NZS 4158 provides excellent protection from corrosion and abrasion.
• May be installed in either horizontal or vertical position.
• Available in PN16 or PN 35 pressure classifications in either clockwise closing (CC) or anti-clockwise closing (ACC) configurations.

Resilient Seat Gate Valves

Features:

• Manufactured to AS/NZS 2638.2, Dobbie resilient seated gate valves feature high quality 500/7 ductile iron body and cover castings, providing superior strength and substantial resistance to wear and impact damage.
• Precision machined 431 grade stainless steel has been utilised for the manufacture of valve spindles, providing a significant level of corrosion resistance and high strength.
• Valve gates are manufactured in Ductile Iron & encapsulated in EPDM to ensure a tight seal.
• High mechanical strength and wear resistant engineering plastic thrust washers ensure low torque requirement for both sealing and cracking operations.
• A robust 316 stainless steel gland incorporates two O-ring seals and a wiper ring, ensuring both reliability and longevity in service. O-rings may be serviced or replaced with the valve under full operating pressure.
• Integral feet provide a stable platform and lifting points have been included in the design to aid safe installation. 
• Valves may be operated using a key or by handwheel.
• Fusion bonded polymeric coating to AS/NZS 4158 provides excellent protection from corrosion and abrasion.
• May be installed in either horizontal or vertical position.
• Available in PN16 pressure classification in either clockwise closing (CC) or anti-clockwise closing (ACC) configurations.

Underground (Screwdown) Hydrant - WA

Features:

• Dobbie Underground (Screwdown) hydrants are manufactured in accordance with 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.