The flow control screw has been eliminated and we have re-designed the valve rod to also act as the flow control. If you wish to update the latest design valve arm, you will need to purchase these parts:
EL3427
VALVE ROD
EL3426
VALVE ARM ASSEMBLY
FE3463
8-32x1 CARRIAGE BOLT
EL4161
8-32 X 15/32 NUT
