Danfoss Types PMFL80-3467 PMFL125 Liquid level regulating valves product introduction

For modulating liquid level control in refrigeration,freezing and air conditioning plant, a system comprising a liquid level regulating valve type PMFL or PMFH, controlled by a pilot float valve type SV, is used.

PMFL and SV systems are used on the evaporator side. PMFH and SV systems are used on the condenser side.The system is suitable for use with ammonia or fluorinated refrigerants. The PMFL and PMFH can be used in liquid lines to or from

• evaporators

• separators

• intermediate coolers

• condensers

• receivers

Modulating liquid level regulation provides liquid injection that is proportional to the actual capacity. This gives a constant amount

of flashgas, thus ensuring stable regulation and economic operation because variations in pressure and temperature are held to a minimum.

Danfoss Types PMFL80-3467 PMFL125 Liquid level regulating valves Features

• Applicable to HCFC, HFC and R717 (Ammonia).

• PMFL / PMFH are based on PM valve family housings.

• Same flange programme as for PM valve series.

• Valve housing in low temperature cast iron (spherical) - EN GJS 400-18-LT.

• Manual operation possible.

• Position indicator available.

• Pressure gauge connection to monitor inlet pressure.

• Simple installation.

• Main valve top cover can be located in any position without affecting the function.

• Classification: DNV, CRN, BV, EAC etc. To get an updated list of certification on the products please contact your local Danfoss Sales Company.

Danfoss Types PMFL80-3467 PMFL125 Liquid level regulating valves Technical data

Refrigerants

Applicable to HCFC, HFC and R717 (Ammonia).

Max. working pressure

PMFL / H: MWP = 28 bar

SV: MWP = 28 bar

Max. test pressure

PMFL / H: Max. test pressure = 42 bar

SV: Max. test pressure = 42 bar

Temperature of media:

-60 – 120 °C.

Note:

Max. working pressure is limited to

MWP = 21 bar when media temperatures are:

below -20 °C for valves made of GGG-40.3 and

below -10 °C for valves made of GG-25.