Geosource, Inc.

Wheatley Pump and Valve, Inc.

Robert I Clarkson

John L Strelow

Ronald A Schuller

The invention disclosed herein relates to a check valve clapper hanger mechanism from which a check valve clapper may be rotatably suspended in a check valve housing. The check valve clapper hanger mechanism is easily removable from the check valve housing and is capable of maintaining proper alignment of the clapper during normal operation of the check valve.

Check valve hanger mechanism

A pipeline corrosion coupon holder apparatus for large diameter pipelines which has a coupon housing assembly mounted adjacent the pipeline with the coupon housing assembly allowing access to a coupon withdrawn from the pipeline for removal and replacement of the coupon through the coupon housing assembly without removal of the coupon through a shaft housing assembly which has a reciprocally mounted shaft for insertion and retrieval of the coupon from the large diameter pipeline.

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Tulsa, OK, United States of America

Robert I Clarkson