The Walker Model PZ processor with the sloped reverse dish bottom head is a multi-purpose process tank with applications in the dairy, beverage and food processing segments.  The design provides good product drainage and is suitable for CIP.

The PZ sloped bottom, side outlet processor meets national and United States Public Heath Service requirements and the 3A Sanitary Standards for batch processors.

The side and bottom sweep agitation provides gentle but complete mixing and blending with fast heating and cooling.

The stainless steel heat transfer jacket, covering the sidewalls and bottom, may be divided into 3 or 4 (depending on size) separately controllable zones for maximum efficiency, flexibility and control when processing partial batches. The heat transfer jacket is designed for operating pressures up to 100 psig @ 320°F as standard; higher operating pressures and ASME & CRN code stamping are available.

The Model PZ is available in several different configurations including:

Standard atmospheric mixing and blending processor
Sealed agitator port for pressure and/or vacuum processing
Batch pasteurizer with thermal wells in the air head space for temp measurement and leak detect valves.

Standard sizes from 200 to 3000 gallons and larger, however vessels as small as 10 gallons and as large as 10,000 gallons have been fabricated for certain applications.

Other options include choice of material (304 or 316L), port configurations, access ladder and more.





The unit is a multi-purpose processor providing mixing and blending with fast heating and cooling. The stainless steel heat transfer surface covers the sidewalls and bottom and is divided into 3 or 4 (depending on size) separately controllable zones for maximum efficiency, flexibility an control when processing partial batches.
Tank Material
STANDARD
304 stainless steel top dome, inner side wall, inner bottom, # 4 finish
Sanitary #4 finish all product contact surfaces
Outer jacket T304 stainless steel
T304 stainless #4 industrial finish on exterior surfaces
OPTIONAL MATERIAL
Top dome, inner side wall, inner bottom 316L stainless steel
Other materials upon request
OPTIONAL FINISHES
OD, # 4 finish with welds stripe buffed
Other finishes available upon request


Insulation STANDARD
2" fiberglass sides & bottom
OPTIONAL
Insulated stainless steel outer top dome


Agitator Assembly
STANDARD
Stainless steel, #4 polish long sweep ass'y designed for CIP operation & ease of disassembly.
Tubular shaft,nylon bearings
Opening - flared in center of dome with rubber dust shield
Agitator Motor - single speed totally enclosed, fan cooled,gear motor, 230/460V/3/60 Hz
Motor mounting bracket -type T304 stainless steel, # 4 polish
OPTIONAL
Motor horsepower & RPM can be changed based on application
Sealed agitator port with two piece rotary seal & dust shield


Heat Transfer Surface
STANDARD
Preformed stainless steel wall panels welded to outer surface of liner & divided into separate zones.
Internal connections are stainless steel.
OPTIONAL
Heat transfer jacket and pressure drop requirements based on application, contact factory for options.
ASME code stamp vessel
CRN code Stamp Vessel


Manway STANDARD
18" diameter non-insulated stainless steel with "O" ring gasket in door


Air Vent
STANDARD
3" vent tube with 4" vent screen up to 1000 gallon
4" vent tube with 5" vent screen on 1500 gallon and larger


Product Inlet
STANDARD
3" stainless steel clamp style ferrule in dome OPTIONAL
2" removable no-foam inlet assembly • Removable double spray ball


Baffle STANDARD
Removable and adjustable
#4 stainless steel finish


Air Space Heater Opening
OPTIONAL
2” clamp type ferrule in dome for air space thermometer
1-1/2 " clamp type ferrule in dome for air space heater connection


CIP OPTIONAL
3" clamp style ferrule in dome for CIP assembly


Thermometer Fittings STANDARD
two stainless steel projectile type wells through side wall for indicating & recording thermometers.
OPTIONAL
Stainless steel mounting lugs for recording thermometer
Additional ferrules as required


Product Outlet STANDARD
Standard clamp style ferrule
Variety of valve options


Legs STANDARD
Stainless steel legs with adjustable ball feet & steel bracing with # 4 finish
OPTIONAL
Extended legs & bracing Legs


Ladder OPTIONAL
Optional stainless steel exterior ladder with platform permanently mounted at convenient working height