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
