PVA 112-2190, Operation Manual, Page: 16 / 34

FCS300 Series Manual
Revision D /
June 2020
Page 16 of 34
8. Check the fluid connection and packing nut (15){15}[17]<16> for leaks. If the valve is
leaking, refer to the Troubleshooting section.
9. Turn the micrometer adjustment (5){5}[7]<6> until the desired flow rate is achieved.
Turning the adjustment clockwise toward zero will decrease the material flow rate
and counterclockwise will increase the material flow rate. If the micrometer
adjustment is turned all the way down to zero, it will stop fluid flow entirely.
10. Once the micrometer setting is determined, the collar (E) on the micrometer can be
turned clockwise to lock the adjustment.
Note: Refer to Troubleshooting section for any problems.
Periodic Maintenance
1. Lubricate the packing (14){14}[16]<15> on the FCS300 Series valve every 200 hours
by placing a few drops of mineral oil or other light oil inside the packing nut.
Note: PVA offers a 10cc mineral oil lubrication kit; Part#: B62-0752
2. The packing nut (15){15}[17]<16> will require occasional tightening, as wear occurs in
order to prevent leaks through the packing.
Routine Cleaning and Disassembly
Cleaning and rebuilding the valve will be required from time to time. A spare
parts kit is available with all the normal wear parts included.
•
FCS300 : Part #FCS3-SP
•
FCS300-ES : Part #FCS3-ES-SP
•
FCS300-ES-ND : Part #FCS3-ES-ND-SP
•
FCS300 - ES-UF : Part #FCS3-ES-UF-SP
1. Begin disassembly by removing air and fluid pressure from the valve.
2. Remove all pneumatic tubing and fluid delivery fittings, hoses, etc. from the valve.
3. Using the tip of a 3/32” Allen key, loosen the packing nut (15){15}[17]<16>.
4. Using the same 3/32” Allen key, evenly remove the two machine screws
(8){8}[10]<9> that are located on the same corners as the fluid section standoffs
(3){3}[3]<5>.
Note: During removal that there is a spring (10){10}[11]<11> forcing the air section
away from the fluid section.