Crevet

Hydrants & Risers



Data Sheet: NZ Hydrant-Hydravalve

DESCRIPTION:
The Crevet NZ Hydravalve is an underground hydrant designed and manufactured in accordance with the New Zealand water industry and British Standard No. 750 specifications.
The NZ Hydravalve is the standard configuration for underground installation throughout New Zealand.
The NZ Hydravalve is designed to be actuated by the use of a valve-actuating key that is separate to the standpipe assembly. The NZ Hydravalve has a "rolled rope type" threaded discharge connection to which the operator affixes a dedicated standpipe.

The NZ Hydravalve consists of a fixed jumper valve onto a non-rising spindle. The fixed jumper valve is a dezincification resistant brass unit with a rubber compound vulcanised to it. This rubber is designed to come into contact with the valve seat giving the NZ Hydravalve a resilient sealing system. The NZ Hydravalve is also available with a built in checkvalve on the inlet side of the Hydravalve giving the added benefit of backflow prevention.

BENEFITS:

  • Flow rate 43 l/s @ 300kPa
  • 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 @ 300 kPa:
1600 Kpa
80° Celsius
43 l/s

COATING INFORMATION:
The NZ Hydravalve is coated and lined with a thermal bonded polymeric coating system in accordance with AS/NZS4158. 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 AS/NZS4158 for both types of standard thermal coating systems used in the water industry.

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
395mm
326mm
200mm
24.3Kg

STANDARD MATERIAL:
 
  •    Body
•    Bonnet
•    Inner Spindle
•    Outer Spindle
•    Gland Nut
•    Jumper
•    Jumper Seal
•    Outlet/Coupling
•    Fasteners
•    Body Gasket
•    Coating
Ductile Iron to AS1830
Ductile Iron to AS1830
Stainless Steel, Gr 431
Valve Brass
Valve Brass
Valve Brass
Vulcanised Nitrile Rubber
Manganese Bronze
Stainless Steel Cap Screws
Natural Rubber
Rilsan Nylon 11 / FBE

OPTIONS:
 
  •    Body
•    Bonnet

•    Spindle
•    Jumper Seal
•    Fasteners
•    Gasket
Cast Grey Iron to AS 1830
Cast Grey Iron/Manganese Bronze
Stainless Steel/Stainless Steel
Alternative materials available on request
Galvanised / Powder coated
Natural Rubber to AS1646

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.


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