The NT Hydravalve has as a standard a "rolled rope" threaded discharge to which the operator affixes a standpipe or direct connection to a hose.
The NT Hydravalve consists of a floating jumper valve into a non-rising spindle. The floating jumper valve is a dezincification resistant brass unit with a polyurethane washer in contact with the sealing surfaces giving the NT Hydravalve a resilient sealing system. The floating jumper valve gives added benefit in negative head situations giving the NT Hydravalve an automatic single backflow prevention device.

BENEFITS:

• Flow rate 24 l/s @ 500kPa
• Compliance with BS740 requirements
• Corrosion resistant coating system
• Compliance with AS3855
• Backflow prevention
• Lightweight Ductile Iron body
• Triple 'o' ring stem sealing system

PERFORMANCE DATA:

•    Max Recommended Operating Pressure: •    Max Recommended Operating Temperature: •    Flowrate @ 500 kPa:

1600 Kpa 80° Celsius 24 l/s

COATING INFORMATION:
The NT Hydravalve is coated and lined with a thermal bonded polymeric coating system in accordance with AS4158. This standard specifies the minimum film thickness and performance characteristics to ensure continuity in the coating and subsequent product. The following table identifies the critical coating thickness requirements of AS4158 for both types of standard thermal coating systems used in the Australian water industry. The NT Hydravalve is also available in a bituminous-coated version.

Coating Type	Internal Surfaces	External Surfaces
Thermoplastic (RN11)	250um	200um
Thermoset (FBE)	350um	300um
Note. um = microns (film thickness)

DIMENSIONS:
	•    Nominal Bore •    Overall Height •    Length •    Width •    Mass	80mm 410mm 315mm 185mm 32Kg
STANDARD MATERIAL:
	•    Body •    Bonnet •    Valve Seat •    Spindle •    Gland •    Jumper •    Jumper Seal •    Outlet •    Fasteners •    Gasket •    Coating	Cast Grey Iron Gr T220 to AS1830 Manganese Bronze Stainless Steel, Gr 316 Manganese Bronze Manganese Bronze Manganese Bronze Polyurethane, type PU40 Manganese Bronze Stainless Steel, Gr 316/304 (bolt/nut) Natural Rubber to AS1646 Rilsan Nylon 11 or Napguard FBE
OPTIONS:
	•    Body •    Bonnet •    Valve Seat •    Spindle •    Jumper Seal •    Fasteners •    Gasket •    Coating	Cast Grey Iron Ductile Iron Machine Ductile iron Stainless Steel Alternative materials available on request Galvanised / Powder coated Natural Rubber to AS1646 Bituminous

Products are available for application outside the standard performance criteria listed above. Please contact your Crevet Technical Representatives at your nearest Sales and Distribution Centre for more information.

DISCLAIMER