Brochure

Catalog CIC-2003-1/US
Industrial Refrigeration Products: Liquid Flow Regulators
Parker Hannifin Corporation
Climate & Industrial Controls Group
Cleveland, OH
421
Industrial
Refrigeration
Products
How to Order
Type AFR automatic 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.
Type AFR (Adjustable Flow)
●
External Adjustment
●
Easy Setting Scale
●
Eliminates System Balancing
●
Integral Check Valve
●
“Frost Free” Neck
Description
This precision built, heavy duty, self-contained, iron bodied
Automatic Flow Regulator is used as a liquid control device
for Ammonia Overfeed Systems. This adjustable flow
regulator, once set, maintains a constant flow rate of liquid
to the evaporator; it also serves as a check valve to prevent
back flow into the liquid line from the evaporator during
pressure reversals such as occur during hot gas defrost.
Refer to Bulletin 41-10.
Dimensions
Application Note
An AFR flow regulator is designed to maintain an approxi-
mately constant liquid refrigerant delivery rate into the
evaporator. However, it is not an expansion device capable
of controlling vapor or two-phase flow. Design conditions,
which allow for the formation of flash gas as liquid flows
through the regulator, can cause the AFR to chatter and
result in irregular liquid delivery.
This feed device should be applied only where sufficient
liquid subcooling exists to ensure that its outlet pressure will
never be reduced to less than the liquid’s saturation vapor
pressure. AFR’s are not recommended for application in
gas displacement systems or where controlled pressure
receivers deliver liquid to the evaporators.
Specifications
Maximum Rated Pressure (MRP) ......... 27.6 bar (400 psi)
Pressure drop range ............... 0.35 to 3.5 bar (5 to 50 psi)
Operating temperature ........- 40° to 38° C (- 40° to 100° F)
32mm
(1.25")
104mm
(4.1")
317mm
(12.47")
Max.
186mm (7.31")
3/8, 1/2 or 3/4 FPT or SW
218mm (8.56")
3/8, 1/2 or 3/4 WN
79mm
(3.12")
Weights
Less flanges ....................... 3.6 kg (8 lb)
With flanges ....................... 4.1 kg (9 lb)
With strainer & flanges....... 5.0 kg (11 lb)
Flange Type Connection
X Less Flanges 00 None
F FPT (IPS) 03
3
/8"
S SW (IPS) 04 ½"
W Weld Neck (IPS) 06 ¾"
D DIN Weld Neck 10 10mm
15 15mm
20 20mm
Strainer
N No Strainer
S w/Strainer
AFR F04 F04 S
Inlet Outlet
Type Flange Flange Strainer
Technical Information, Dimensions and How to Order