Brochure

Parker Hannifin Corporation
Climate & Industrial Controls Group
Cleveland, OH
Catalog CIC-2003-1/US
Industrial Refrigeration Products: Liquid Flow Regulators
422
Type FFR (Fixed Flow)
●
Eliminates System Balancing
●
Overcomes Flow Fluctuations
●
Permits evaporator optimization
Description
The Fixed Flow Regulator is used as a liquid flow control
device for Liquid Recirculation Systems and is suitable for
use with R-22 and Ammonia. The regulator establishes and
maintains a constant flow rate determined only by the
selected orifice number and independent of initial pressure
drop or changes in the inlet or outlet pressure.
Materials
Body ...................................... ASTM 126 Class B cast iron
Piston .......................................................... Stainless steel
Flow Orifice and Valve Body Cap .............................. Steel
Specifications
Maximum Rated Pressure (MRP) ......... 27.6 bar (400 psi)
Pressure drop range ............... 0.35 to 3.5 bar (5 to 50 psi)
Higher pressure drops up to 300 psi will not harm the
regulator but can cause poor flow control.
Operating temperature ........- 40° to 38° C (- 40° to 100° F)
Refer to Bulletin 41-15.
How to Order
Type FFR fixed flow regulators can be specified by using the symbols in the chart below to develop a model number. Select only
those symbols that represent the features desired, and place them in the sequence indicated by the example at the top of the
chart.
Strainer
N No Strainer
S w/Strainer
Orifice Inlet Outlet
Type Number Flange Flange Strainer
Orifice Number*
04 4
06 6
10 10
15 15
20 20
30 30
40 40
60 60
80 80
* Orifice number
indicates nominal tons
ammonia.
FFR 10 K05 K05 S
Flange Type Connection
X Less Flanges 00 None
R Less Flanges,
w/Male Adapter
Ring
F FPT (IPS) 03
3
/8"
S SW (IPS) 04 ½"
W Weld Neck (IPS) 06 ¾"
K ODS (US) 04 ½"
05
5
/8"
07
7
/8"
D DIN Weld Neck 10 10mm
15 15mm
20 20mm
Application Note
The FFR does not provide a check valve feature and will
permit flow in the opposite direction; therefore, for hot gas
defrost applications, or any other application where the
pressure in the evaporator may occasionally exceed the
pressure in the low pressure liquid line, a check valve must
be installed
upstream.
Weights
Less flanges ....................... 1.4 kg (3 lb)
With flanges ....................... 1.8 kg (4 lb)
With strainer & flanges....... 2.7 kg (6 lb)
WARNING!
ODS flanges not suitable
for use with ammonia.
!
Technical Information and How to Order