Danfoss PMFL125-200,PMFL/H300-500,027F3063 Flow regulating valves

Danfoss PMFL125-200,PMFL/H300-500,027F3063 Flow regulating valves Features

Applicable to HCFC, HFC and R717 (Ammonia).
• PMFL / PMFH are based on PM valve familyhousings.
• 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 inletpressure.

 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 PMFL125-200,PMFL/H300-500,027F3063 Flow regulating valves Design / Function

The values for spindle turns are an indication for
an initial setting only. If a position indicator is
used, a more precise modulation can be achieved
when fine tuning the valve setting. If the PMFL
is not opening fully, the spring tension must be
reduced. If the PMFL is operating in a ON / OFF
function, the spring tension should be increased.
The condenser pressure will have an effect on the
fine tuning and large variations in condensing
pressure might call for readjustment.
The subcooling is measured just before the PMFL
and the pressure difference is for the valve only
excluding piping and armatures.
The PMFL can be used together with SV 4 as a
pilot valve.
The final choice of orifice may vary depending on
refrigerant and pressure levels. Smaller pressure
levels needs a bigger orifice. Pressure difference
levels below 3 bar (43 psi) need SV 4 – 6
with Ø3 mm orifice.