4
Parker Autoclave Engineers
Instrumentation Products Division
Erie, PA  USA
www.autoclave.com   |   Cat. 02-9309ME
For best performance and life, the pump should be installed in 
the vertical position. This will prevent side loading on the air 
piston seals. The pump will, however, function in any position.
The pump will attach to the mounting location using (4) 1/2" 
bolts. There are 4 holes provided on each pump for mounting.
Section 6.1
Compressed Air Supply
The main air drive connection port on the pump is a female 3/4" 
FNPT and is located in the spool valve housing. An additional 
female 1/8" FNPT air pilot valve connection port is located in 
the bottom cap next to the spool housing. This pilot connec-
tion must be plumbed to an unregulated ltered air source. The 
purpose of this connection is to aid in low pressure differential 
start-up and restart of the pump while providing a more accurate 
pressure control. The pump will not function if this unregulated 
air supply is not connected to the pilot valve port.
The pump is assembled at the factory using permanent synthetic 
grease in the air drive moving parts.
Always bolt the pump to a substantially  
solid surface using the slotted holes provided.
WARNING
AFL Pumps have a maximum sound level  
of 87 dBA. Wear hearing protection while working 
with or near the pump.
CAUTION
Unless otherwise noted, all air line accessories for the pump 
air drive should have, at minimum, a 3/4" FNPT connection. 
The tubing/piping used to connect the components should 
have the maximum ID the pressure rating will allow. Reduc-
ing the size before the air inlet will reduce air pressure ow 
and reduce ow rate of the pump.
NOTICE
The use of an air line lubricator is not required and is not 
recommended. The oil in the air lubricator will cause the 
factory installed grease to be purged from the pump. Once 
an air lubricator is used the pump can never again be oper-
ated without an air lubricator.
NOTICE
An air line lter with a minimum 5 microns ltration rating must 
be used on the supply line. If the air supply is not dry, a mist 
separator must be used to remove moisture in the air line.
Parker Autoclave Engineers can supply a complete air control 
package that includes a lter, air pressure regulator, air pres-
sure gauge and shutoff valve. Mist separators are also available. 
Contact the factory for more details on these options.
The pump is designed to function from 15 psi to 150 psi  
(1 to 10 bar) air input pressure.
Section 6.2
Liquid Section
All AFL series pumps have a high pressure liquid outlet port 
located on the side of the pump head. The suction inlet port on 
all AFL series pumps is positioned at the bottom of the head.
Inlet: A liquid lter with at least a 100 mesh size must be 
installed before the suction port inlet to prevent damage to the 
check valves and high pressure seals due to debris. 
The tubing or piping should be made from a corrosion resistant 
material and sized with a maximum ID to t the 1" pipe  
connections. 
Outlet: The outlet tubing ID must, at minimum, match the same 
size of the pump check valve gland port. Refer to product litera-
ture for outlet connections details for each pump. Reducing out-
let tubing or connection will reduce output liquid ow capacity.
For best performance, a liquid supply reservoir should be 
located higher than the inlet gland on the pump to create 
a small pressure head. Be sure to make an air tight seal 
between the reservoir and the pump inlet connection. The 
connections between the reservoir and pump inlet should 
not be reduced from the 1" FNPT connection size.
NOTICE
The high pressure tubing must be rated to at  
least the maximum pump output pressure.
WARNING
Restricting ow at the liquid inlet will cause problems with 
check valve performance and reduce output ow.
NOTICE