Spray Nozzle Materials & Chemical, Heat and Wear Resistance

Spray Nozzle Materials

As "The Fog Engineers", we, IKEUCHI, have been developing nozzles in a variety of materials to meet the desires and applications of our customers.
Listed below are materials of nozzles and parts. For special applications, please contact us.

Metals S303 ・・・ Stainless steel 303
S304 ・・・ Stainless steel 304
S316 ・・・ Stainless steel 316
S316L ・・・ Stainless steel 316L
SCS13 ・・・ Die-cast stainless steel equiv. to S304
SCS14 ・・・ Die-cast stainless steel equiv. to S316
SCS16 ・・・ Die-cast stainless steel equiv. to S316L
S420J2 ・・・ Hardened stainless steel 420J2
B ・・・ Brass (C3604)
Rubbers NBR ・・・ Nitrile rubber
FKM ・・・ Fluororubber
FEPM ・・・ Tetrafluoroethylene-propylene rubber
EPDM ・・・ Ethylene-propylene rubber
Ceramics CERJET®Ceramics
Alumina ceramics ・・・ Alumina 92%, etc.
SiC ・・・ Silicon nitride bonded silicon carbide
SiSiC ・・・ Sintered reaction-bonded silicon carbide
Plastics PP ・・・ Polypropylene
PPS ・・・ Polyphenylene sulfide
PVC ・・・ Polyvinyl chloride
HTPVC ・・・ Heat-treated polyvinyl chloride
PTFE ・・・ Polytetrafluoroethylene
PCTFE ・・・ Polychlorotrifluoroethylene
PVDF ・・・ Polyvinylidene fluoride
ABS ・・・ Acrylonitrile butadiene styrene
FRPP ・・・ Glass-fiber reinforced polypropylene
PA ・・・ Polyamide
PE ・・・ Polyethylene
Ultrahigh molecular weight polyethylene (UHMWPE)
Polyester elastomer
Araldite®*1 ・・・ Epoxy resin (Adhesive)
Araldite®H ・・・ High-temperature epoxy resin (Adhesive)

Note: Oil-free treatment is available at additional cost. Contact us for details.
*1) Araldite is the registered trademark of Huntsman Advanced Materials.

Chemical Resistance & Heat Resistance


*2) The heat resistance (operating temperature limit) of spray nozzles varies widely depending on operating conditions, environment, liquid sprayed and other factors.
*3) Ceramic should be used at temperatures under 100˚C to avoid a crack caused by heat shock.
Note: Also take into account heat/chemical resistance of an adhesive when using spray nozzles with adhesive applied in nozzle assemblies.

Chemical Resistance

In spraying chemicals or using spray nozzles in a corrosive environment, chemical-resistant materials must be used as spray nozzles may corrode quickly. As basic standard materials, we have stainless steel 303, brass and ceramic for nozzle tips.
The ceramic tip of CERJET® (nozzles with ceramic tips inserted) is not corroded by almost all acids and highly corrosive chemicals except hydrofluoric acid and alkali liquids of pH12 and over. However, for the applications where adhesives or nozzle body materials may corrode, we recommend our CERTIIM®, outstandingly chemical-resistant, with ceramic tips inserted into injection-molded engineering plastic bodies.
In addition to spray nozzles made of optional materials shown in this catalog, nozzles in other special materials are available on request.

Heat Resistance

The temperature that spray nozzles can withstand varies depending on ambient environmental condition and characteristics of spray liquid. Nozzles made of special materials are available on request.
The ceramic tips of CERJET® may crack if abruptly cooled down from high temperatures (200°C). Please also consider the heat resistance of any adhesives used in spray nozzle assemblies.

Wear Resistance

Nozzle tips are always subject to abrasion as they are constantly exposed to flow of a liquid at high speed. If a circulated liquid containing slurry is used, they will wear out faster.
The ceramic tip of CERJET® spray nozzles has an outstanding wear-resistance. With a hardness of 7 on the Mohs scale, it can last 20–30 times longer than stainless steel nozzles and several hundred times longer than brass ones.
The figure shows the increase in flow of each nozzle due to a worn orifice. The shaded area shows the excess spray flow from a stainless steel nozzle relative to the CERJET® during total spray time. If the spray liquid is agricultural chemicals, it could cause crop injury.
In high-pressure cleaning, worn nozzles cause pump pressure to drop and the cleaning effect is rapidly degraded.
As for flat spray nozzle, increased wear makes its spray angle narrower and spray distribution uneven.