UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	November 20, 2018 4:00 P.M.

Form:	S-4
CIK: 0001723089 Company Name: Apergy Corp File Number: 333-228389
CIK: 0001757712 Company Name: Accelerated Process Systems, Inc. File Number: 333-228389-20
CIK: 0001757802 Company Name: Windrock, Inc. File Number: 333-228389-19
CIK: 0001757784 Company Name: Norriseal-Wellmark, Inc. File Number: 333-228389-18
CIK: 0001757803 Company Name: Wellmark Holdings, Inc. File Number: 333-228389-17
CIK: 0001757974 Company Name: US Synthetic Corp File Number: 333-228389-16
CIK: 0001757716 Company Name: UPCO, Inc. File Number: 333-228389-15
CIK: 0001757793 Company Name: Theta Oilfield Services, Inc. File Number: 333-228389-14
CIK: 0001757701 Company Name: Spirit Global Energy Solutions, Inc. File Number: 333-228389-13
CIK: 0001757700 Company Name: Quartzdyne, Inc. File Number: 333-228389-12
CIK: 0001757756 Company Name: PCS Ferguson, Inc. File Number: 333-228389-11
CIK: 0001757787 Company Name: Norris Rods, Inc. File Number: 333-228389-10
CIK: 0001757798 Company Name: Honetreat Co File Number: 333-228389-09
CIK: 0001757801 Company Name: Harbison-Fischer, Inc. File Number: 333-228389-08
CIK: 0001757746 Company Name: Apergy USA, Inc. File Number: 333-228389-07
CIK: 0001757748 Company Name: Apergy Funding Corp File Number: 333-228389-06
CIK: 0001757749 Company Name: Apergy ESP Systems, LLC File Number: 333-228389-05
CIK: 0001757659 Company Name: Apergy Energy Automation, LLC File Number: 333-228389-04
CIK: 0001757751 Company Name: Apergy BMCS Acquisition Corp File Number: 333-228389-03
CIK: 0001757736 Company Name: Apergy Artificial Lift, LLC File Number: 333-228389-02
CIK: 0001757750 Company Name: Apergy (Delaware) Formation, Inc. File Number: 333-228389-01