Pressure Regulator

Hot Gas Bypass Regulator and Liquid Gas Mixer Type CPCE and LG

CPCE hot gas bypass regulator adapt compressor capacity to actual evaporator load. They are designed for installation in a bypass line between the low and high pressure sides of the refrigeration system, for hot gas injection between the evaporator and thermostatic expansion valve. Injection should be arranged to occur through an LG liquid gas mixer.

CPCE Hot Gas Bypass Regulator

  • Superior control accuracy
  • Direct connection to system suction line regulates hot gas injection independent of evaporator pressure drop
  • The regulator increases evaporator gas velocity, thus ensuring better oil return to compressor
  • Protection against too low an evaporating temperature, i.e. prevents evaporator icing
  • May be used in the following EX range: Category 3 (Zone 2)

LG Liquid Gas Mixer

  • LG provides homogeneous mixing of the liquid and hot gas refrigerant injected into the evaporator
  • Prevents high suction superheat by combining hot gas injection with expansion valve characteristics
  • LG can be used for hot gas defrosting or reverse cycle systems

Evaporator Pressure Regulator
Type KVP

The KVP is mounted in the suction line after the 
evaporator and is used to 

Maintain a constant evaporating pressure and thereby a constant surface temperature on the evaporator. The regulation is modulating. By throttling in the suction line, the amount of refrigerant gas is matched to the evaporator load. 

Protect against an evaporating pressure 
that is too low (e.g. as protection against 
freezing in a water chiller). The regulator 
closes when the pressure in the evaporator 
falls below the set value. 

Differentiate between the evaporating 
pressures in two or more evaporators in 
systems with one compressor.

Features & Benefits

  • Accurate, adjustable pressure regulation
  • Wide capacity and operating range
  • Pulsation damping design
  • Stainless steel bellows
  • Compact angle design for easy installation in any position
  • Hermetic brazed construction
  • 1⁄4 in. Schrader valve for pressure testing
  • Available with flare and ODF solder connections
  • KVP 12 – KVL 22: may be used in the following EX range: Category 3 (Zone 2)

Crankcase Pressure Regulator
Type KVL

Crankcase pressure regulator type KVL is fitted
in the suction line ahead of the compressor. KVL protects the compressor motor against
overload during start-up after long standstill
periods or after defrost periods (high pressure
in evaporator).

Features & Benefits

  • Accurate, adjustable pressure regulation
  • Wide capacity and operating ranges
  • Pulsation damping design
  • Stainless steel bellows
  • Compact angle design for easy installation in any position
  • Hermetic brazed construction
  • Available in a wide size range of flare and ODF solder types
  • KVL 12 – KVL 22: may be used in the following EX range: Category 3 (Zone 2)

Hot Gas Bypass Regulator
Type KVC

KVC is a hot gas bypass regulator applied for the adaption of the compressor capacity to the actual evaporator load. Placed in a bypass between high and low pressure sides of the refrigeration system, KVC imposes a lower limit on the compressor suction pressure by supplying the low pressure side with replacement capacity in the form of hot gas / cool gas from the high pressure side.

Features & Benefits

  • Accurate, adjustable pressure regulation
  • Wide capacity and operating ranges
  • Pulsation damping design
  • Stainless steel bellows
  • Compact angle design for easy installation
  • Hermetic brazed construction
  • Available with flare and ODF solder connections
  • May be used in the following EX range: Category 3 (Zone 2)

Condensing Pressure Regulator, Type KVR
Differential Pressure Valve, Type NRD

Regulating system KVR and NRD is used to maintain a constant and sufficiently high condenser and receiver pressure in refrigeration and air conditioning plant with air-cooled condensers. KVR can also be used together with receiver pressure regulator, type KVD.

Features & Benefits

  • Accurate, adjustable pressure regulation
  • Wide capacity and operating range
  • Pulsation damping design
  • Stainless steel bellows
  • Compact angle design for easy installation in any position
  • Hermetic brazed construction
  • 1⁄4 in. Schrader valve for pressure gauge connection
  • Available with flare and ODF solder connections
  • KVR 12 - KVR 22 and NRD: May be used in the following EX range: Category 3 (Zone 2)