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1. (WO2018220611) NON-INDEXABLE END-TO-END BUTT PIPE COUPLER FOR USE IN WASTEWATER DRAINAGE STACK

Pub. No.:    WO/2018/220611    International Application No.:    PCT/IL2018/050497
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 09 01:59:59 CEST 2018
IPC: F16L 3/12
F16L 21/02
F16L 47/08
Applicants: HULIOT AGRICULTURAL COOPERATIVE SOCIETY LTD
Inventors: YOGEV, Ilan
PELEG, Ronen
Title: NON-INDEXABLE END-TO-END BUTT PIPE COUPLER FOR USE IN WASTEWATER DRAINAGE STACK
Abstract:
End-to-end butt pipe couplers including an internal overlap arrangement and necessarily deployed for an intended flow direction of gravitational wastewater drainage therethrough to prevent fluid leakage in wastewater drainage stacks of polypropylene (PP) pipes.