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HW/AA

SHORT NOZZLES, MINI SIZE

The modern design of these nozzles offers the same advantage as the full-size HW nozzles. In addition, it makes it possible to use a smaller pitch between the nozzles, allowing for a higher impact value per unit length. A carefully designed flow stabilizer enhances nozzle efficiency by minimizing turbulence due to the sharp direction change at the inlet from the main manifold. A filter is also provided for mounting at the nozzle inlet, minimizing nozzle clogging and abrasion.

FEATURES

Flow Rate

lpm@240bar: 7.80 min / 208 max
gpm@3600psi: 2.06 min / 54.9 max

Materials

Body: AISI 303 s.s.
Insert: AISI 420 s.s. hardened
Tungsten carbide

Thread Connection

Welding nipple and locknut

Applications

Performances

SPRAY ANGLE CODES
HWC
HWE
HWF
HWL
22° 26° 30° 40°

 

CODE
CAPACITY  (lpm) AT PRESSURE  (bar)
80
140
200
240
300
400
2045xxAA 4,5 5,9 7,2 7,8 8,7 10,0
2063xxAA 6,3 8,3 10,0 10,9 12,2 14,1
2106xxAA 10,6 14,2 16,8 18,4 20,5 23,7
2134xxAA 13,4 17,7 21,2 23,2 25,9 29,9
2162xxAA 16,2 21,4 25,6 28,0 31,4 36,2
2208xxAA 20,8 27,5 32,9 36,0 40,2 46,5
2250xxAA 25,0 33,0 39,5 43,3 48,4 55,9
2320xxAA 32,0 42,3 50,6 55,4 62,0 71,6
2402xxAA 40,2 53,2 63,6 69,6 77,8 89,9
2520xxAA 52,0 68,8 82,2 90,0 101 116
2642xxAA 64,2 84,9 102 111 124 144
2798xxAA 79,8 106 126 138 155 178
2996xxAA 99,6 132 157 173 193 223
3112xxAA 112 148 177 194 217 250
3120xxAA 120 159 190 208 232 268

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HW/AA drawing in 2D (PDF)
HW/AA drawing in 3D (STEP)
HW/AA datasheet (PDF)

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Abbreviations
CL Jet deflection angle deg DU Liquid outlet dia mm RF Female thread inch
D Conventional orifice dia mm FF Flange outer dia mm RG Male thread inch
D1 Smallest free inside dia mm G Flange center-hole dia mm SQ Square bar size mm
DE Liquid inlet dia mm H,H1 Height mm W Weight gr, kg
DF Flange size inch L,L1 Length mm WS Wrench size mm
DIA Outside diameter mm NR Number of orifices
DN Flange nominal size mm QC Quickfit connection
How to make up the product code

Accessories & fittings
ZWA WELDING NIPPLE

HW nozzles can be assembled on various nipples with the same inlet but at different lengths.
The precision machined nipple inlet port assures precise nozzle flat fan jet positioning to
the specified offset angle value of 15° concerning the manifold center line. This makes it
possible to obtain uniform impact distribution, yielding better descaling results.

 

XHW FLOW STABILIZER

The flow stabilizer is a critical component for proper descaling. By reducing flow turbulence
losses, a larger fraction of the water flow energy can be used to generate an impact on the
surface that needs to be descaled. The design consists of a cylindrical brass body with a polished
inner surface, housing a cast stainless steel flow stabilizer which straightens the liquid path
to minimize turbulences. Different-length nipples are available, with or without an inlet filter.
The codes always include a multi-fin flow straightener.

 

VAW LOCKNUTS

The VAW A075 B1 and VAW C075 B1 locknuts for ZWA series descaling nipples have been designed
to profit from a large experience on the field. The sturdy design and the generous dimensions
give maximum protection to the nozzle and the nipple thread. One locknut size fits all standard-size
ZWA series nipples of any length.

 

VDA GASKET

The VDA 20C1 T3 round gasket provides proper assembly between the nozzle and nipple.
One size fits all small-size ZWA nipple types.

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