Control valves

Baelz thermal oil valves have a broad range of industrial applications

Our thermal oil valves are suitable for special applications in temperature ranges from -10°C to 350°C. The nominal diameters range from DN 15 to DN 300.
 

Advantages at a glance
  • Easy replacement of defective components
  • Very low leakage
  • High variability/flexibility
  • Low-maintenance
  • High operational reliability
  • Unique design

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Areas of application

  • Polymerization and polycondensation systems
  • Temperature control of kneaders, dryers, nutsche filters, reactors
  • Concentration, distillation, regeneration and smelting plant 
  • Temperature control of flat film calendars and injection molding tooling
  • Heating of coating machines and lost core baths
  • Heating of autoclaves, stirring tanks, boiling tanks, storage and mixing tanks, silos, drying chambers
  • Production of road and ground surfacing materials
  • Heating of oil baths, acid and pickling baths
  • Temperature control of paint spraying and drying systems
  • Heating of bitumen and fuel oil tanks, air-conditioners, cargo
  • Heat recovery from main motors and gas turbines
  • Heating of presses, drying and coating systems, melting pots, laminating rollers
  • Drying installations
  • Indirect steam generation using thermal oil for heating of washing facilities
  • Heating of distillation systems
  • Heating of Flexo printing machines
  • Thermal (or regenerative) post-combustion of production exhaust with heat recovery
  • Heating of calanders, stenters, drying and cleaning facilities, mangles
  • Indirect steam generation
  • Heating of ovens, deep fat fryers, cooking vessels through indirect steam generation using thermal oil
  • Drying installations
  • Washing and cleaning facilities
  • Biogas preparation and power generation
  • Drying installations
  • Indirect steam generation
  • Hot water generation
  • Heating of halls

Overview of valves

For thermal oil applications, please use the types with cooling tube (K) and bellows (SS).

2-way control valve baelz 340-BK and baelz 340-BK-SS

2-way control valve in a 3-way housing with cooling tube.
Type baelz 340-BK-SS additionally with stainless steel bellows, for applications using thermal oil.
 

Fluid Nominal pressure Nominal diameter Body material Temperature range

superheated steam,

saturated steam,

water / hot water;

thermal oil

PN 16 / 40 DN 15 - 300

spheroid ductile iron (5.3103) /

cast steel (1.0619)

-10°C to 350°C

Operating instructions

Data sheets

Drawings


Universal control valve baelz 342-BK and baelz 342-BK-SS

Universal control valve with cooling tube for industrial applications.
Type baelz 342-BK-SS additionally with stainless steel bellows, for applications using thermal oil.
Angle way Kvso = 2% (class I).
 

Fluid Nominal pressure Nominal diameter Body material Temperature range

water / hot water;

thermal oil

PN 16 / 40 DN 15 - 125

spheroid ductile iron (5.3103) /

cast steel (1.0619)

-10°C to 350°C

Operating instructions

Data sheets

Drawings


Universal control valve baelz 347-BK and baelz 347-BK-SS

Universal control valve with cooling tube for industrial applications.
Type baelz 347-BK-SS additionally with stainless steel bellows, for applications using thermal oil.
Straight way and angle way Kvso = 0,004% (better than class IV).
 

Fluid Nominal pressure Nominal diameter Body material Temperature range

water / hot water;

thermal oil

PN 16 / 40 DN 15 - 300

spheroid ductile iron (5.3103) /

cast steel (1.0619)

-10°C to 350°C

Operating instructions

Declarations of conformity / Manufacturer's declarations

Data sheets

Drawings


Stainless steel control valve baelz 356-1-VA-K-SS

Stainless steel control valve with cooling tube and stainless steel bellows for applications using thermal oil.
 

Fluid Nominal pressure Nominal diameter Body material Temperature range

thermal oil

PN 16 / 25 / 40 DN 15 - 25

stainless steel (1.4571)

-10°C to 350°C


ANSI control valve baelz 365

Flanged control valve with pressure ratings according to American ANSI/ASME standards.
 

Fluid Nominal pressure Nominal diameter Body material Temperature range

hot water / cold water,

glycol (up to 50%),

steam,

thermal oil

ANSI 300

DN 15 - 250
(1/2" - 10")

cast steel (SA216WCB)

-29°C to 343°C
(-20°F to 650°F)

Operating instructions

Declarations of conformity / Manufacturer's declarations

Data sheets

Drawings


ANSI control valve baelz 367

Flanged control valve with pressure ratings according to American ANSI/ASME standards.
 

Fluid Nominal pressure Nominal diameter Body material Temperature range

hot water / cold water,

glycol (up to 50%),

thermal oil

ANSI 300

DN 15 - 250
(1/2" - 10")

cast steel (SA216WCB)

-29°C to 343°C
(-20°F to 650°F)

Operating instructions

Declarations of conformity / Manufacturer's declarations

Data sheets

Drawings


to the other valves